Two additional drill rigs to be deployed to
accelerate program
PERTH,
Australia, Aug. 21, 2024 /CNW/ - Westgold Resources
Limited (ASX: WGX) (TSX: WGX) (OTCQX: WGXRF) (Westgold or
the Company) is pleased to provide an overview of the Beta Hunt
mine and update in relation to the ongoing Stage 3 Resource
Definition drilling program being undertaken at the Fletcher Zone
discovery (Fletcher) within the Beta Hunt operation at the
Company's Southern Goldfields Operations.
Highlights
Assays from the next 8 holes of the Fletcher Stage 3 program
at Beta Hunt have been received.
Significant intersections include:
- 4.00m @ 22.45g/t Au in hole
WF440N1-01AR
- 5.00m @ 10.95g/t Au in hole
WF440N1-21AE
- 5.20m @ 10.13g/t Au in hole
WF440N1-02AR
- 8.00m @ 5.26g/t Au in hole
WF440N1-01AR
- 7.00m @ 7.97g/t Au in hole
WF440N1-21AE
- 6.00m @ 6.39g/t Au in hole
WF440N1-04AR
- 15.00m @ 3.07g/t Au in hole
WF440N1-3AR
Resource Definition program to be accelerated - an additional
two drill rigs to be deployed taking fleet to three at
Fletcher.
Maiden Mineral Resource Estimate targeted for late Q2 / early
Q3 FY25.
Westgold Managing Director and CEO Wayne Bramwell commented:
"The Fletcher Zone is key to expanding gold production at Beta
Hunt. It is a proximate, parallel lode to the existing 1.6Moz
Western Flanks system and Westgold is currently advancing decline
development from Western Flanks towards Fletcher to access a new
mining front.
Accelerating drilling will rapidly unlock value at Fletcher. To
date Fletcher has only 32 drill holes into this emerging 2km long
target and Westgold is now mobilising an additional 2 drill rigs to
Beta Hunt to accelerate this program.
Westgold looks forward to expanding production at Beta Hunt and
delivering a maiden Mineral Resource Estimate for the emerging
Fletcher Zone in late Q2 / early Q3 FY25."
Beta Hunt – Overview
The Beta Hunt operation, located at Kambalda 600km east of
Perth, was acquired by Westgold as
part of the August 2024 merger with
TSX listed Karora Resources Inc.
Beta Hunt was originally developed as a nickel mine and operated
by Western Mining Corporation (WMC) in the 1970's. The mine
was sold to Gold Fields in 2001 as part of the St Ives Operations
sale. In 2003 a "sub-lease" covering Beta Hunt was sold to Reliance
Mining Limited and through various transactions the gold and nickel
rights to the sub-lease were separated. Salt Lake Mining Pty Ltd
(SLM) subsequently acquired the property in 2013 and
succeeded in re-combining the nickel and gold rights. Gold
production commenced in mid-2014. Karora Resources acquired 100% of
SLM in 2016 under its previous business name of Royal Nickel
Corporation Minerals (RNC).
Karora has mined both gold and nickel at Beta Hunt. However,
nickel operations were suspended in mid-2024 in response to falling
nickel prices. Western Flanks is currently the mainstay gold ore
source for the Beta Hunt operation.
|
Beta Hunt Gold Mineral Resources As Of 30 September
20231,2
|
|
Measured
|
Indicated
|
Measured & Indicated
|
Inferred
|
|
|
Kt
|
g/t
|
Koz
|
Kt
|
g/t
|
Koz
|
Kt
|
g/t
|
Koz
|
Kt
|
g/t
|
Koz
|
|
|
Western
Flanks
|
859
|
2.9
|
79
|
10,436
|
2.9
|
980
|
11,295
|
2.9
|
1,059
|
6,364
|
2.9
|
587
|
|
|
A Zone
|
419
|
2.7
|
37
|
4,143
|
2.4
|
317
|
4,536
|
2.4
|
354
|
3,927
|
2.3
|
296
|
|
|
Larkin
|
-
|
-
|
-
|
2,028
|
2.6
|
168
|
2,028
|
2.6
|
168
|
1,761
|
2.4
|
134
|
|
|
Mason
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
778
|
2.7
|
67
|
|
|
Cowcill
|
-
|
-
|
-
|
248
|
2.4
|
19
|
248
|
2.4
|
19
|
35
|
2.9
|
3
|
|
|
Total
|
1,278
|
2.8
|
116
|
16,855
|
2.7
|
1,484
|
18,133
|
2.7
|
1,600
|
12,865
|
2.6
|
1,086
|
|
The Fletcher Zone – An Emerging Target of Scale within Beta
Hunt
Fletcher is a substantial new discovery made by Karora Resources
at Beta Hunt and has been drilled in a series of stages.
Importantly, Fletcher is interpreted to represent a new gold
mineralised structure paralleling the ~1.6Moz Western Flanks
deposit, approximately 300m to the
west (Figure 1).
In 2016, an exploration hole drilled by Karora Resources (then
RNC) first intersected the Fletcher Shear Zone returning two
significant intersections including 8.90m @ 2.68g/t Au and 15.00m @ 2.32g/t Au in hole WF14-983
(Appendix B). These holes were drilled to test a conceptual gold
target using the A-Zone and Western Flanks shear zones as
structural analogues and the presence of some +1g/t Au gold
assays reported in a historic surface nickel exploration hole
(KD1237W1) drilled during the WMC era.
|
__________________________________
|
|
1
|
Refer Karora TSX
Announcement dated 21 November 2023 "Karora Announces Strong
Increases In Beta Hunt Gold Mineral Resources, Grades and Gold
Mineral Reserves" available on SEDAR+ (www.sedar.com)
|
|
2
|
Refer Westgold ASX
Announcement dated 8th April 2024 "Westgold & Karora
To Merge To Create A New 400kozpa Australian Gold
Producer"
|
|
3
|
Refer Royal Nickel
Corp TSX Announcement dated 6 July 2016 "RNC Discovers Third
Major Gold Zone at Beta Hunt" available on SEDAR+
(www.sedar.com)
|
The success of this program confirmed the existence of a
third significant mineralised shear zone within the Beta Hunt
sub-lease.
Follow-up drill testing of the Fletcher Zone did not recommence
until 2019 and was sporadic until 2023 when a more comprehensive
multi-stage program commenced. Notwithstanding this, to date, only
32 holes have been drilled into the +2km long mineralised
system.
Mineralisation at Fletcher is similar to the parallel 1.6Moz
Western Flanks deposit and comprises foliated albite-biotite-pyrite
altered and irregularly quartz veined basalt (Figure 1).
Fletcher Zone - Stage 3 Drilling Results
A total of 24 holes were drilled between 2016 and 2023 as part
of Stage 1 & 2 Fletcher exploration programs with the majority
of these holes returning highly encouraging results (refer
Figure 2 and Appendix B for details).
The aim of the Stage 3 program is to further define Mineral
Resources in the southern half of the currently defined ~2km long
gold mineralised shear. Encouragingly, the results for 8
recently completed holes have continued to return significant
results and include:
- 4.00m @ 22.45g/t Au in hole
WF440N1-01AR
- 5.00m @ 10.95g/t Au in hole
WF440N1-21AE
- 5.20m @ 10.13g/t Au in hole
WF440N1-02AR
- 8.00m @ 5.26g/t Au in hole
WF440N1-01AR
- 7.00m @ 7.97g/t Au in hole
WF440N1-21AE
- 6.00m @ 6.39g/t Au in hole
WF440N1-04AR
- 15.00m @ 3.07g/t Au in hole
WF440N1-3AR
- 4.65m @ 7.52g/t Au in hole
WF440N1-01AR
Full drilling results are presented in Appendix A with hole
positions shown on Figure 3.
Like Western Flanks, mineralisation at Fletcher is related to a
sub-vertical northwest trending shear system. Mineralisation is
hosted within the Lunnon Basalt beneath the Kambalda
Ultramafics.
Figures 4 & 5 show the deportment of mineralisation in fans
of Stage 3 drill holes.
Importantly, while the Fletcher Zone has been broadly defined
over ~2km, it has only seen limited drilling down dip at depth to
around 200-250m below the ultramafic
contact and remains open at depth. In comparison, Western Flanks
has been drilled down dip to depths greater than 500m (see Figures 4 & 5).
Looking Forward
Fletcher Resource Definition Drilling Program To be
Accelerated
Currently the Fletcher Resource Definition drilling program is
being executed with a single underground drill rig. Westgold sees
the Fletcher deposit as a short range opportunity to bring an
additional mining front on-line to further expand the Beta Hunt
production rates towards the 2Mtpa run rate target.
The Company intends to accelerate the Fletcher drill program
over coming weeks by adding an additional two drill rigs from its
in-house drilling division. The aim of this acceleration is to
bring Fletcher to a maiden Mineral Resource Estimation during late
Q2/early Q3 FY25.
This announcement is authorised for release to the ASX by the
Board.
Competent/Qualified Person Statements
Exploration Results
The information in this release that relates to Exploration
results was compiled by Westgold technical employees and
contractors under the supervision of Mr. Simon Rigby B.Sc. (Hons), who is a member of the
Australian Institute of Geoscientists and who has verified,
reviewed and approved such information. Mr Rigby is a full-time
employee of the Company and has sufficient experience which is
relevant to the styles of mineralisation and types of deposit under
consideration and to the activities which he is undertaking to
qualify as a Competent Person as defined in the 2012 Edition of the
Australasian Code for Reporting of Exploration Results, Mineral
Resources and Ore Reserves (the "JORC Code") and as a
Qualified Person as defined in the CIM Guidelines and National
Instrument 43-101 – Standards of Disclosure for Mineral
Projects ("NI 43-101"). Mr. Rigby is an employee of the
Company and, accordingly, is not independent for purposes of NI
43-101. Mr Rigby consents to and approves the inclusion in this
release of the matters based on his information in the form and
context in which it appears. Mr Rigby is eligible to participate in
short- and long-term incentive plans of the company.
General
Mineral Resources, Ore Reserve Estimates and Exploration Targets
and Results are calculated in accordance with the JORC Code. The
other technical and scientific information in this release has been
prepared in accordance with the Canadian regulatory requirements
set out in NI 43-101 and has been reviewed on behalf of the company
by Qualified Persons, as set forth above.
Forward looking statements
These materials prepared by Westgold Resources Limited include
forward looking statements. Often, but not always, forward looking
statements can generally be identified by the use of forward
looking words such as "may", "will", "expect", "intend", "believe",
"forecast", "predict", "plan", "estimate", "anticipate",
"continue", and "guidance", or other similar words and may include,
without limitation, statements regarding plans, strategies and
objectives of management, anticipated production or construction
commencement dates and expected costs or production outputs.
Forward looking statements inherently involve known and unknown
risks, uncertainties and other factors that may cause the Company's
actual results, performance and achievements to differ materially
from any future results, performance or achievements. Relevant
factors may include, but are not limited to, changes in commodity
prices, foreign exchange fluctuations and general economic
conditions, increased costs and demand for production inputs, the
speculative nature of exploration and project development,
including the risks of obtaining necessary licenses and permits and
diminishing quantities or grades of reserves, political and social
risks, changes to the regulatory framework within which the Company
operates or may in the future operate, environmental conditions
including extreme weather conditions, recruitment and retention of
personnel, industrial relations issues and litigation.
Forward looking statements are based on the Company and its
management's good faith assumptions relating to the financial,
market, regulatory and other relevant environments that will exist
and affect the Company's business and operations in the future. The
Company does not give any assurance that the assumptions on which
forward looking statements are based will prove to be correct, or
that the Company's business or operations will not be affected in
any material manner by these or other factors not foreseen or
foreseeable by the Company or management or beyond the Company's
control.
Although the Company attempts and has attempted to identify
factors that would cause actual actions, events or results to
differ materially from those disclosed in forward looking
statements, there may be other factors that could cause actual
results, performance, achievements or events not to be as
anticipated, estimated or intended, and many events are beyond the
reasonable control of the Company. In addition, the Company's
actual results could differ materially from those anticipated in
these forward-looking statements as a result of the factors
outlined in the "Risk Factors" section of the Company's continuous
disclosure filings available on SEDAR+ or the ASX, including, in
the Company's current annual report, half year report or most
recent management discussion and analysis.
Accordingly, readers are cautioned not to place undue reliance
on forward looking statements. Forward looking statements in these
materials speak only at the date of issue. Subject to any
continuing obligations under applicable law or any relevant stock
exchange listing rules, in providing this information the Company
does not undertake any obligation to publicly update or revise any
of the forward-looking statements or to advise of any change in
events, conditions or circumstances.
Appendix A – Fletcher Zone Stage
3 Drilling - Significant Intersections
|
Drill
Stage
|
Hole
|
Collar
N
|
Collar
E
|
Collar
RL
|
Intercept
(Downhole)
|
From
(m)
|
Dip
|
Azi
|
Total Length
(m)
|
|
3
|
WF440N1-01AR
|
6543787
|
375045
|
-436.8
|
5.00m @ 2.78 g/t
Au
|
0
|
-14.3
|
254.1
|
570.4
|
|
1.00m @ 7.00 g/t
Au
|
54.0
|
|
5.00m @ 4.14 g/t
Au
|
304.0
|
|
4.65m @ 7.71 g/t
Au
|
333.0
|
|
8.00m @ 5.26 g/t
Au
|
342.0
|
|
4.00m @ 3.24 g/t
Au
|
353.0
|
|
8.12m @ 7.52 g/t
Au
|
370.8
|
|
0.55m @ 7.92 g/t
Au
|
398.6
|
|
2.45m @ 2.65 g/t
Au
|
411.5
|
|
4.00m @ 22.45 g/t
Au
|
421.0
|
|
3
|
WF440N1-02AR
|
6543787
|
375045
|
-436.8
|
4.00m @ 3.86 g/t
Au
|
0
|
-22.2
|
254.7
|
663.3
|
|
4.00m @ 1.53 g/t
Au
|
52.0
|
|
7.45m @ 2.86 g/t
Au
|
370.5
|
|
5.20m @ 10.13 g/t
Au
|
433.8
|
|
2.00m @ 2.32 g/t
Au
|
442.0
|
|
3
|
WF440N1-03AR
|
6543787
|
375045
|
-436.8
|
7.00m @ 2.67 g/t
Au
|
0
|
-29.1
|
254.3
|
852.5
|
|
4.00m @ 3.51 g/t
Au
|
433.0
|
|
1.00m @ 5.17 g/t
Au
|
442.0
|
|
7.00m @ 3.36 g/t
Au
|
497.0
|
|
15.00m @ 3.07 g/t
Au
|
507.0
|
|
5.00m @ 2.83 g/t
Au
|
667.0
|
|
1.20m @ 3.50 g/t
Au
|
684.0
|
|
4.05m @ 1.97 g/t
Au
|
688.0
|
|
1.00m @ 5.01 g/t
Au
|
740.0
|
|
3
|
WF440N1-04AE
|
6543787
|
375045
|
-436.8
|
6.00m @ 6.39 g/t
Au
|
0
|
-19.5
|
263.2
|
750.3
|
|
1.00m @ 3.49 g/t
Au
|
77.0
|
|
6.00m @ 1.89 g/t
Au
|
435.0
|
|
1.00m @ 8.21 g/t
Au
|
503.0
|
|
3
|
WF440N1-21AE
|
6543787
|
375045
|
-436.8
|
7.00m @ 3.20 g/t
Au
|
0
|
-21.6
|
254.4
|
729.3
|
|
5.00m @ 1.62 g/t
Au
|
50.0
|
|
5.00m @ 10.95 g/t
Au
|
368.0
|
|
4.00m @ 7.17 g/t
Au
|
376.0
|
|
1.00m @ 18.69 g/t
Au
|
389.0
|
|
7.00m @ 7.97 g/t
Au
|
454.0
|
|
3.00m @ 5.16 g/t
Au
|
573.0
|
|
4.90m @ 1.73 g/t
Au
|
588.1
|
|
6.00m @ 1.24 g/t
Au
|
596.0
|
|
2.20m @ 3.81 g/t
Au
|
631.8
|
|
3
|
WF440DD-08AR
|
6543666
|
375051
|
-432.6
|
NSA
|
|
-12.2
|
244.1
|
231.4
|
|
3
|
WF440DD-11AR
|
6543666
|
375051
|
-433.0
|
1.00m @ 2.41 g/t
Au
|
206
|
-19.0
|
232.8
|
223.3
|
|
3
|
WF440DD-12AR
|
6543666
|
375051
|
-432.7
|
NSA
|
|
-13.4
|
239.5
|
219.4
|
Appendix B – Fletcher Zone Previously Reported Stages 1 &
2 Drilling - Significant Intersections
|
Drill
Stage
|
Hole
|
Collar
N
|
Collar
E
|
Collar
RL
|
Intercept
(Downhole)
|
From
(m)
|
Dip
|
Azi
|
Total Length
(m)
|
|
2
|
WF380ACC-10AE
|
6543686
|
375115
|
-375.5
|
5.00m @ 2.62g/t
Au
|
326.0
|
-38.4
|
244.0
|
693.3
|
|
5.65m @ 2.98g/t
Au
|
431.4
|
|
2.00m @ 7.07g/t
Au
|
532.0
|
|
6.00m @ 5.03g/t
Au
|
563.0
|
|
2
|
WF380ACC-12AE_W
|
6543686
|
375115
|
-375.5
|
3.00m @ 4.43g/t
Au
|
549.0
|
-47.1
|
233.4
|
698.9
|
|
8.50m @ 1.66g/t
Au
|
626.0
|
|
2
|
WF380ACC-13AE
|
6543686
|
375115
|
-375.5
|
8.00m @ 6.16g/t
Au
|
289.0
|
-34.0
|
224.9
|
570.2
|
|
6.00m @ 2.43g/t
Au
|
320.0
|
|
15.00m @ 3.66g/t
Au
|
394.0
|
|
2.00m @ 7.08g/t
Au
|
441.0
|
|
2.00m @ 19.85g/t
Au
|
452.0
|
|
2
|
WF380ACC-14AE
|
6543686
|
375115
|
-375.5
|
3.64m @ 5.05g/t
Au
|
204.4
|
-40.8
|
224.3
|
669.3
|
|
7.00m @ 1.80g/t
Au
|
353.0
|
|
1.00m @ 11.82g/t
Au
|
371.0
|
|
5.00m @ 2.22g/t
Au
|
376.0
|
|
4.00m @ 3.94g/t
Au
|
385.0
|
|
3.00m @ 8.93g/t
Au
|
534.0
|
|
2.00m @ 5.44g/t
Au
|
597.0
|
|
2
|
WF380ACC-15AE
|
6543686
|
375114
|
-375.2
|
3.00m @ 4.28g/t
Au
|
334.0
|
-27.3
|
257.1
|
717.5
|
|
16.00m @ 3.50g/t
Au
|
356.0
|
|
6.00m @ 2.50g/t
Au
|
378.0
|
|
3.50m @ 6.74g/t
Au
|
431.5
|
|
12.00m @ 2.11g/t
Au
|
439.0
|
|
6.90m @ 6.16g/t
Au
|
453.1
|
|
11.20m @ 1.59g/t
Au
|
659.8
|
|
11.55m @ 1.17g/t
Au
|
687.5
|
|
2
|
WF380ACC-17AE
|
6543686
|
375114
|
-375.2
|
12.00m @ 3.48g/t
Au
|
366.0
|
-33.4
|
257.5
|
792.6
|
|
14.50m @ 17.29g/t
Au
|
450.5
|
|
5.00m @ 1.90g/t
Au
|
580.0
|
|
3.00m @ 3.05g/t
Au
|
595.0
|
|
2.00m @ 1.60g/t
Au
|
616.0
|
|
1.00m @ 10.10g/t
Au
|
634.0
|
|
10.00m @ 5.30g/t
Au
|
772.0
|
|
2
|
WF380ACC-09AE
|
6543684
|
375115
|
-374.0
|
7.00m @ 3.26g/t
Au
|
379.0
|
-32.2
|
245.0
|
576.0
|
|
9.00m @ 4.99g/t
Au
|
404.0
|
|
33.00m @ 3.78/t
Au
|
418.0
|
|
6.00m @ 3.48g/t
Au
|
462.0
|
|
3.00m @ 4.18g/t
Au
|
473.0
|
|
2
|
WF380ACC-11AE
|
6543686
|
375115
|
-375.2
|
Abandoned
|
|
-22.8
|
234.0
|
378.2
|
|
2
|
WF380ACC-12AE
|
6543684
|
375115
|
-374.0
|
3.00m @ 3.51g/t
Au
|
220.0
|
-47.1
|
233.4
|
519.2
|
|
3.00m @ 6.20g/t
Au
|
364.0
|
|
6.78m @ 3.85g/t
Au
|
453.0
|
|
3.33m @ 15.21g/t
Au
|
473.7
|
|
2
|
WF380ACC-16AE
|
6543684
|
375115
|
-374.0
|
2.00m @ 34.59g/t
Au
|
262.0
|
-28.0
|
233.9
|
609.4
|
|
7.00m @ 1.55g/t
Au
|
387.0
|
|
1
|
BF1730-22AE
|
6543246
|
375359
|
-300.4
|
17.00m @ 2.48g/t
Au
|
248.0
|
-39.1
|
265.5
|
579.7
|
|
2.12m @ 4.78g/t
Au
|
348.0
|
|
3.00m @ 3.89g/t
Au
|
405.0
|
|
7.50m @ 2.13g/t
Au
|
442.5
|
|
6.00m @ 2.60g/t
Au
|
497.0
|
|
13.00m @ 3.13g/t
Au
|
522.0
|
|
9.00m @
3.79g/t
|
553.0
|
|
1
|
BF1730-23AE
|
6543247
|
375358
|
-300.7
|
4.30 @ 2.30g/t
Au
|
366.0
|
-42.8
|
253.4
|
555.3
|
|
3.00m @ 7.87g/t
Au
|
409.0
|
|
2.31m @ 3.42g/t
Au
|
454.0
|
|
3.00m @ 1.47g/t
Au
|
479.0
|
|
1.00m @ 6.16g/t
Au
|
500.0
|
|
1
|
BF1730-24AE
|
6543247
|
375358
|
-300.8
|
3.00m @ 17.95g/t
Au
|
192.0
|
-46.1
|
264.1
|
603
|
|
7.00m @ 1.91g/t
Au
|
198.0
|
|
1.00m @ 7.04g/t
Au
|
286.0
|
|
11.00m @ 1.62g/t
Au
|
338.0
|
|
8.00m @ 2.63g/t
Au
|
358.0
|
|
6.00m @ 15.90g/t
Au
|
597.0
|
|
1
|
WF405ACC-48AE
|
6543695
|
375109
|
-400.8
|
5.00m @ 4.90g/t
Au
|
288.0
|
-29.5
|
231.5
|
513.0
|
|
32.0m @ 4.75g/t
Au
|
298.0
|
|
1
|
WF405ACC-49AE
|
6543695
|
375109
|
-400.9
|
1.00m @ 13.61g/t
Au
|
6.0
|
-37.1
|
231.1
|
591.0
|
|
10.00m @ 3.03g/t
Au
|
276.0
|
|
1.00m @ 10.17g/t
Au
|
290.0
|
|
4.00m @ 3.05g/t
Au
|
334.0
|
|
2.00m @ 10.92g/t
Au
|
350.0
|
|
34.50m @ 3.67g/t
Au
|
355.5
|
|
4.00m @ 3.43g/t
Au
|
519.0
|
|
4.00m @ 3.36g/t
Au
|
526.0
|
|
1
|
WF405ACC-50AE
|
6543694
|
375109
|
-400.8
|
3.0m @ 7.28g/t
Au
|
293.0
|
-28.4
|
214.1
|
537.5
|
|
8.0m @ 2.17g/t
Au
|
444.0
|
|
1
|
BL1730-04AE
|
6543246
|
375359
|
-300
|
1.00m @ 3.78g/t
Au
|
184.0
|
-37. 6
|
245.4
|
485.5
|
|
4.00m @ 7.83g/t
Au
|
296.0
|
|
26.00m @ 6.5g/t
Au
|
353.0
|
|
Inc. 6.00m @ 9.85g/t
Au
|
353.0
|
|
2.50m @ 7.30g/t
Au
|
417.0
|
|
9.00m @ 25.22g/t
Au
|
446.0
|
|
Inc. 0.70m @ 262g/t
Au
|
451.0
|
|
1
|
WF405SOD-01AE
|
6543631
|
375234
|
-399.7
|
9.00m @ 3.32g/t
Au
|
304.0
|
-33.5
|
231.1
|
627.3
|
|
3.50m @ 3.56g/t
Au
|
348.0
|
|
10.47m @ 2.46g/t
Au
|
522.5
|
|
1
|
WF405SOD-51AE
|
6543632
|
375234
|
-400.4
|
6.00m @ 3.20g/t
Au
|
50.0
|
-21.6
|
217.1
|
570.5
|
|
7.00m @1.72g/t
Au
|
378.0
|
|
4.00m @ 4.09g/t
Au
|
429.0
|
|
19.00m @ 2.89g/t
Au
|
484.0
|
|
29.00m @ 3.01g/t
Au
|
507.0
|
|
2.88m @ 11.75g/t
Au
|
549.5
|
|
3.50m @ 7.05g/t
Au
|
556.0
|
|
1
|
WF405SOD-52AE
|
6543632
|
375234
|
-400.4
|
2.00m @11.19g/t
Au
|
280.0
|
-29.8
|
217.1
|
612.4
|
|
6.00m @ 2.82g/t
Au
|
294.0
|
|
7.00m @ 2.80g/t
Au
|
332.0
|
|
11.00m @ 4.73g/t
Au
|
385.0
|
|
3.00m @ 7.36g/t
Au
|
507.0
|
|
2.00m @ 5.02g/t
Au
|
513.0
|
|
13.00m @ 2.20g/t
Au
|
556.0
|
|
1
|
FZ350-001
|
6543915
|
374830
|
-348.2
|
7.31m @ 3.02g/t
Au
|
24.9
|
-42
|
250
|
642.1
|
|
3.00m @ 5.60g/t
Au
|
574.0
|
|
5.00m @ 2.21g/t
Au
|
614.0
|
|
1
|
AF18LV-07AE
|
6544420
|
374623
|
-266.6
|
8.50m @ 5.47g/t
Au
|
116.0
|
-31.5
|
249.5
|
653.8
|
|
9.50m @ 1.84g/t
Au
|
132.5
|
|
9.50m @ 3.31g/t
Au
|
578.5
|
|
1
|
AF18LV-16AE
|
6544419
|
374624
|
-266.6
|
0.50m @ 6.99g/t
Au
|
124.0
|
-30.6
|
221.8
|
639.4
|
|
6.00m @ 1.97g/t
Au
|
129.0
|
|
3.00m @ 11.05g/t
Au
|
138.0
|
|
4.40m @ 5.99g/t
Au
|
144.0
|
|
0.75m @ 18.55g/t
Au
|
545.0
|
|
1
|
WF14-98
|
6543955
|
375125
|
-188.1
|
3.90m @ 2.12g/t
Au
|
53.1
|
-29.5
|
262.2
|
858.5
|
|
11.00m @ 2.56g/t
Au
|
180
|
|
9.30m @ 2.28g/t
Au
|
203.1
|
|
14.0m @ 3.01g/t
Au
|
214.0
|
|
6.55m @ 4.46g/t
Au
|
252.3
|
|
8.90m @ 2.68g/t
Au
|
716.6
|
|
15.80m @ 2.32g/t
Au
|
736.5
|
APPENDIX B – JORC 2012 TABLE 1 – GOLD DIVISION
SECTION 1: SAMPLING TECHNIQUES AND DATA
(Criteria in this section apply to all succeeding sections.)
|
Criteria
|
JORC Code
Explanation
|
Commentary
|
|
Sampling
techniques
|
- Nature and quality
of sampling (e.g. cut channels, random chips, or specific
specialised industry standard measurement tools appropriate to the
minerals under investigation, such as down hole gamma sondes, or
handheld XRF instruments, etc.). These examples should not be taken
as limiting the broad meaning of sampling.
- Include reference
to measures taken to ensure sample representivity and the
appropriate calibration of any measurement tools or systems
used.
- Aspects of the
determination of mineralisation that are Material to the Public
Report.
- In cases where
'industry standard' work has been done this would be relatively
simple (e.g. 'reverse circulation drilling was used to obtain 1 m
samples from which 3 kg was pulverised to produce a 30 g charge for
fire assay'). In other cases more explanation may be required, such
as where there is coarse gold that has inherent sampling problems.
Unusual commodities or mineralisation types (e.g. submarine
nodules) may warrant disclosure of detailed
information.
|
•
Diamond Drilling
A significant portion
of the data used in resource calculations has been gathered from
diamond core. Multiple sizes have been used historically. This core
is geologically logged and subsequently halved for sampling. Grade
control holes may be whole-cored to streamline the core handling
process if required.
•
Face Sampling
At each of the major
past and current underground producers, each development face /
round is horizontally chip sampled. The sampling intervals are
domained by geological constraints (e.g. rock type, veining and
alteration / sulphidation etc.). The majority of exposures within
the orebody are sampled.
•
Sludge Drilling
Sludge drilling at is
performed with an underground production drill rig. It is an open
hole drilling method using water as the flushing medium, with a
64mm (nominal) hole diameter. Sample intervals are ostensibly the
length of the drill steel. Holes are drilled at sufficient angles
to allow flushing of the hole with water following each interval to
prevent contamination. Sludge drilling is not used to inform
resource models.
|
|
Drilling
techniques
|
- Drill type (e.g.
core, reverse circulation, open-hole hammer, rotary air blast,
auger, Bangka, sonic, etc.) and details (e.g. core diameter, triple
or standard tube, depth of diamond tails, face-sampling bit or
other type, whether core is oriented and if so, by what method,
etc.).
- Method of recording
and assessing core and chip sample recoveries and results
assessed.
- Measures taken to
maximise sample recovery and ensure representative nature of the
samples.
|
•
RC Drilling
Drill cuttings are
extracted from the RC return via cyclone. The underflow from each
interval is transferred via bucket to a four-tiered riffle
splitter, delivering approximately three kilograms of the recovered
material into calico bags for analysis. The residual material is
retained on the ground near the hole. Composite samples are
obtained from the residue material for initial analysis, with the
split samples remaining with the individual residual piles until
required for re-split analysis or eventual disposal.
• RAB
/ Aircore Drilling
Combined scoops from
bucket dumps from cyclone for composite. Split samples taken from
individual bucket dumps via scoop. RAB holes are not included in
the resource estimate.
•
Blast Hole Drilling
Cuttings sampled via
splitter tray per individual drill rod. Blast holes not included in
the resource estimate.
|
|
Drill sample
recovery
|
- Whether a
relationship exists between sample recovery and grade and whether
sample bias may have occurred due to preferential loss/gain of
fine/coarse material.
|
- All geology input
is logged and validated by the relevant area geologists,
incorporated into this is assessment of sample recovery. No defined
relationship exists between sample recovery and grade. Nor has
sample bias due to preferential loss or gain of fine or coarse
material been noted.
|
|
Logging
|
- Whether core and
chip samples have been geologically and geotechnically logged to a
level of detail to support appropriate Mineral Resource estimation,
mining studies and metallurgical studies.
- Whether logging is
qualitative or quantitative in nature. Core (or costean, channel,
etc.) photography.
- The total length
and percentage of the relevant intersections logged
|
- Westgold surface
drill-holes are all orientated and have been logged in detail for
geology, veining, alteration, mineralisation and orientated
structure. Westgold underground drill-holes are logged in detail
for geology, veining, alteration, mineralisation and structure.
Core has been logged in enough detail to allow for the relevant
mineral resource estimation techniques to be employed.
- Surface core is
photographed both wet and dry and underground core is photographed
wet. All photos are stored on the Company's servers, with the
photographs from each hole contained within separate
folders.
- Development faces
are mapped geologically.
- RC, RAB and Aircore
chips are geologically logged.
- Sludge drilling is
logged for lithology, mineralisation and vein
percentage.
- Logging is
quantitative in nature.
- All holes are
logged completely, all faces are mapped completely.
|
|
Sub-sampling
techniques and sample preparation
|
- If core, whether
cut or sawn and whether quarter, half or all core
taken.
- If non-core,
whether riffled, tube sampled, rotary split, etc. and whether
sampled wet or dry.
- For all sample
types, the nature, quality and appropriateness of the sample
preparation technique.
- Quality control
procedures adopted for all sub-sampling stages to maximise
representivity of samples.
- Measures taken to
ensure that the sampling is representative of the in-situ material
collected, including for instance results for field
duplicate/second-half sampling.
- Whether sample
sizes are appropriate to the grain size of the material being
sampled.
|
- Blast holes
-Sampled via splitter tray per individual drill rods.
- RAB / AC chips -
Combined scoops from bucket dumps from cyclone for composite. Split
samples taken from individual bucket dumps via scoop.
- RC - Three tier
riffle splitter (approximately 5kg sample). Samples generally
dry.
- Face Chips -
Nominally chipped horizontally across the face from left to right,
sub-set via geological features as appropriate.
- Diamond Drilling -
Half-core niche samples, sub-set via geological features as
appropriate. Grade control holes may be whole-cored to streamline
the core handling process if required.
- Chips / core chips
undergo total preparation.
- Samples undergo
fine pulverisation of the entire sample by an LM5 type mill to
achieve a 75µ product prior to splitting.
- QA/QC is currently
ensured during the sub-sampling stages process via the use of the
systems of an independent NATA / ISO accredited laboratory
contractor. A significant portion of the historical informing data
has been processed by in-house laboratories.
- The sample size is
considered appropriate for the grain size of the material being
sampled.
- The un-sampled half
of diamond core is retained for check sampling if required. For RC
chips regular field duplicates are collected and analysed for
significant variance to primary results.
|
|
Quality of assay
data and laboratory tests
|
- The nature, quality
and appropriateness of the assaying and laboratory procedures used
and whether the technique is considered partial or
total.
- For geophysical
tools, spectrometers, handheld XRF instruments, etc., the
parameters used in determining the analysis including instrument
make and model, reading times, calibrations factors applied and
their derivation, etc.
- Nature of quality
control procedures adopted (e.g. standards, blanks, duplicates,
external laboratory checks) and whether acceptable levels of
accuracy (i.e. lack of bias) and precision have been
established.
|
- Recent drilling was
analysed by fire assay as outlined below;
- At Beta Hunt all
drill core sampling is conducted by Karora personnel. Samples for
gold analysis are shipped to SGS Mineral Services of Kalgoorlie for
preparation and assaying by 50 gram fire assay analytical method.
All gold diamond drilling samples submitted for assay include at
least one blank and one Certified Reference Material ("CRM") per
batch, plus one CRM or blank every 20 samples. In samples with
observed visible gold mineralization, a coarse blank is inserted
after the visible gold mineralization to serve as both a coarse
flush to prevent contamination of subsequent samples and a test for
gold smearing from one sample to the next which may have resulted
from inadequate cleaning of the crusher and pulveriser. The lab is
also required to undertake a minimum of 1 in 20 wet screens on
pulverised samples to ensure a minimum 85% passing at -75µm. No
significant QA/QC issues have arisen in recent drilling
results.
- Photon Assay was
introduced in 2023 for Beta Hunt grade control samples.
PhotonAssay™ technology (Chrysos Corporation Limited) is a rapid,
non-destructive analysis of gold and other elements in mineral
samples. It is based on the principle of gamma activation, which
uses high energy x-rays to excite changes to the nuclear structure
of selected elements. The decay is then measured to give a gold
analysis. Each sample is run through two cycles with a radiation
time of 15s. This methodology is insensitive to material type and
thus does not require fluxing chemicals as in the fire assay
methodology. Highlights of the PhotonAssay™ process are as
follows:
- The process is
non-destructive; the same sample accuracy can be determined by
repeat measurements of the same sample. In addition, the instrument
runs a precision analysis for each sample relating to the
instrument precision
- The process allows
for an increased sample size, about 500 g of crushed product.
- The crushed material is
not pulverised, as in the fire assay
process; this ensures that gold is not smeared or lost
during pulverisation (especially
important if there is an expectation of visible gold that is
being analysed)
- Historical drilling has used a combination of
Fire Assay, Aqua Regia and PAL
analysis.
- These assay methodologies are appropriate for
the resources in question.
|
|
Verification of
sampling and assaying
|
- The verification of
significant intersections by either independent or alternative
company personnel.
- The use of twinned
holes.
- Documentation of
primary data, data entry procedures, data verification, data
storage (physical and electronic) protocols.
- Discuss any
adjustment to assay data.
|
- No independent or
alternative verifications are available.
- Virtual twinned
holes have been drilled in several instances across all sites with
no significant issues highlighted. Drillhole data is also routinely
confirmed by development assay data in the operating
environment.
- Primary data is
collected utilising LogChief. The information is imported into a
SQL database server and verified.
- All data used in
the calculation of resources and reserves are compiled in databases
(underground and open pit) which are overseen and validated by
senior geologists.
- No adjustments have
been made to any assay data.
|
|
Location of data
points
|
- Accuracy and
quality of surveys used to locate drill holes (collar and down-hole
surveys), trenches, mine workings and other locations used in
Mineral Resource estimation.
- Specification of
the grid system used.
- Quality and
adequacy of topographic control.
|
- All data is
spatially oriented by survey controls via direct pickups by the
survey department. Drillholes are all surveyed downhole, deeper
holes with a Gyro tool if required, the majority with single /
multishot cameras.
- All drilling and
resource estimation is preferentially undertaken in local mine grid
at the various sites.
- Topographic control
is generated from a combination of remote sensing methods and
ground-based surveys. This methodology is adequate for the
resources in question.
|
|
Data spacing and
distribution
|
- Data spacing for
reporting of Exploration Results.
- Whether the data
spacing and distribution is sufficient to establish the degree of
geological and grade continuity appropriate for the Mineral
Resource and Ore Reserve estimation procedure(s) and
classifications applied.
- Whether sample
compositing has been applied.
|
- Data spacing is
variable dependent upon the individual orebody under consideration.
A lengthy history of mining has shown that this approach is
appropriate for the Mineral Resource Estimation process and to
allow for classification of the resources as they
stand.
- Compositing is
carried out based upon the modal sample length of each individual
domain.
|
|
Orientation of data
in relation to geological structure
|
- Whether the
orientation of sampling achieves unbiased sampling of possible
structures and the extent to which this is known, considering the
deposit type.
- If the relationship
between the drilling orientation and the orientation of key
mineralised structures is considered to have introduced a sampling
bias, this should be assessed and reported if material.
|
- Drilling
intersections are nominally designed to be normal to the orebody as
far as underground infrastructure constraints / topography
allows.
- Development
sampling is nominally undertaken normal to the various
orebodies.
- Where drilling
angles are sub optimal the number of samples per drill hole used in
the estimation has been limited to reduce any potential
bias.
- It is not
considered that drilling orientation has introduced an appreciable
sampling bias.
|
|
Sample
security
|
- The measures taken
to ensure sample security.
|
- For samples assayed
at on-site laboratory facilities, samples are delivered to the
facility by Company staff. Upon delivery the responsibility for
sample security and storage falls to the independent third-party
operators of these facilities.
- For samples assayed
off-site, samples are delivered to a third-party transport service,
who in turn relay them to the independent laboratory contractor.
Samples are stored securely until they leave site.
|
|
Audits or
reviews
|
- The results of any
audits or reviews of sampling techniques and data
|
- Site generated
resources and reserves and the parent geological data is routinely
reviewed by the Westgold Corporate technical team.
|
SECTION 2: REPORTING OF EXPLORATION RESULTS
(Criteria listed in the preceding section also apply to this
section.)
|
Criteria
|
JORC Code
Explanation
|
Commentary
|
|
Mineral tenement and
land tenure status
|
- Type, reference
name/number, location and ownership including agreements or
material issues with third parties such as joint ventures,
partnerships, overriding royalties, native title interests,
historical sites, wilderness or national park and environmental
settings.
- The security of the
tenure held at the time of reporting along with any known
impediments to obtaining a licence to operate in the
area.
|
- Native title
interests are recorded against several WGX tenements.
- The CMGP tenements
are held by the Big Bell Gold Operations (BBGO) of which Westgold
has 100% ownership.
- Several third-party
royalties exist across various tenements at CMGP, over and above
the state government royalty.
- The Fortnum Gold
Project tenure is 100% owned by Westgold through subsidiary company
Aragon Resources Pty. Ltd. Various Royalties apply to the package.
The most pertinent being;
- State Government –
2.5% NSR
- Beta Hunt is owned
by Westgold through a sub-lease agreement with St Ives Gold Mining
Company Pty Ltd (SIGMC), which gives Westgold the right to explore
and mine gold and nickel.
- Royalties on gold
production from Beta Hunt are as follows:
- A royalty to the
state government equal to 2.5% of the royalty value of gold metal
produced; and
- Royalties to third
parties equal to 4.75% of recovered gold less allowable
deductions.
- The Higginsville-Lakewood Operations include the Higginsville
and Lakewood Mills and associated
infrastructure, mining operations and exploration prospects which
are located on 242 tenements owned by Westgold and covers approximately 1,800km2 total
area.
- Royalties on the HGO gold production are as follows:
- Production payments of up to 1% of gross gold
revenue over various tenements to traditional land owners.
- Royalty equal to 2.5% of recovered gold to
the Government of Western Australia; and
- Various third parties hold rights to receive
royalties in respect of gold (and in some cases other minerals or
metals) recovered from the tenements.
- The tenure is currently in good standing
- There are no known issues regarding security
of tenure.
- There are no known impediments to continued
operation.
- WGX operates in
accordance with all environmental conditions set down as conditions
for grant of the leases.
|
|
Exploration done by
other parties
|
- Acknowledgment and
appraisal of exploration by other parties
|
- The CMGP tenements
have an exploration and production history in excess of 100
years.
- The FGP tenements
have an exploration and production history in excess of 30
years.
- BH tenements have
an exploration and production history in excess of 60
years.
- HGO tenements have
an exploration and production history in excess of 40
years.
- Westgold work has
generally confirmed the veracity of historic exploration
data.
|
|
Geology
|
- Deposit type,
geological setting and style of mineralisation.
|
BHO
- Beta Hunt is
situated within the central portion of the Norseman-Wiluna
greenstone belt in a sequence of mafic/ultramafic and felsic rocks
on the southwest flank of the Kambalda Dome.
- Gold mineralsation
occurs mainly in subvertical shear zones in the Lunnon Basalt and
is characterised by shear and extensional quartz veining within a
halo of biotite/pyrite alteration. Within these shear zones, coarse
gold sometimes occurs where the shear zones intersect iron-rich
sulphidic metasediments in the Lunnon Basalt or nickel sulphides at
the base of the Kambalda Komatiite (ultramafics). The mineralised
shears are represented by A-Zone, Western Flanks, Larkin and Mason
zones.
|
|
|
CGO
- CGO is located in
the Achaean Murchison Province, a granite-greenstone terrane in the
northwest of the Yilgarn Craton. Greenstone belts trending
north-northeast are separated by granite-gneiss domes, with smaller
granite plutons also present within or on the margins of the
belts.
- Mineralisation at
Big Bell is hosted in the shear zone (Mine Sequence) and is
associated with the post-peak metamorphic retrograde assemblages.
Stibnite, native antimony and trace arsenopyrite are disseminated
through the K-feldspar-rich lode schist. These are intergrown with
pyrite and pyrrhotite and chalcopyrite. Mineralisation outside the
typical Big Bell host rocks (KPSH), for example 1,600N and Shocker,
also display a very strong W-As-Sb geochemical halo.
- Numerous gold
deposits occur within the Cuddingwarra Project area, the majority
of which are hosted within the central mafic-ultramafic ± felsic
porphyry sequence. Within this broad framework, mineralisation is
shown to be spatially controlled by competency contrasts across,
and flexures along, layer-parallel D2 shear zones, and is maximised
when transected by corridors of northeast striking D3 faults and
fractures.
- The Great Fingall
Dolerite hosts the majority gold mineralisation within the portion
of the greenstone belt proximal to Cue (The Day Dawn Project Area).
Unit AGF3 is the most brittle of all the five units and this
characteristic is responsible for its role as the most favourable
lithological host to gold mineralisation in the Greenstone
Belt.
|
|
|
FGO
- The Fortnum
deposits are Paleoproterozoic shear-hosted gold deposits within the
Fortnum Wedge, a localised thrust duplex of Narracoota Formation
within the overlying Ravelstone Formation. Both stratigraphic
formations comprise part of the Bryah Basin in the Capricorn
Orogen, Western Australia.
- The Horseshoe
Cassidy deposits are hosted within the Ravelstone Formation
(siltstone and argillite) and Narracoota Formation (highly altered,
moderate to strongly deformed mafic to ultramafic rocks). The main
zone of mineralisation is developed within a horizon of highly
altered magnesian basalt. Gold mineralisation is associated with
strong vein stock works that are confined to the altered mafic.
Alteration consists of two types: stockwork proximal
silica-carbonate-fuchsite-haematite-pyrite and distal
silica-haematite-carbonate+/- chlorite.
- The Peak Hill
district represents remnants of a Proterozoic fold belt comprising
highly deformed trough and shelf sediments and mafic / ultramafic
volcanics, which are generally moderately metamorphosed (except for
the Peak Hill Metamorphic Suite).
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HGO
- The Higginsville
Gold Operation is located in the Eastern Goldfields Superterrane of
the Archean Yilgarn Craton. The bulk of the Higginsville tenement
package is located almost entirely within the well-mineralised
Kalgoorlie Terrane, between the gold mining centres of Norseman and
St Ives. HGO can be sub-divided into seven major geological
domains: Trident Line of Lode, Chalice, Lake Cowan, Southern
Paleo-channels, Mt Henry, Polar Bear Group and Spargos Project
area.
- Majority of
mineralisation along the Trident Line of Lode are hosted within the
Poseidon gabbro and high-MgO dyke complexes in the south. The
Poseidon Gabbro is a thick, weakly-differentiated gabbroic sill,
which strikes north-south and dips 60° to the east, is over 500 m
thick and 2.5 km long. The mineralisation is hosted within or
marginal to quartz veining and is structurally and lithologically
controlled.
- The Chalice Deposit
is located within a north-south trending, 2 km to 3 km wide
greenstone terrane, flanked on the west calc-alkaline granitic
rocks of the Boorabin Batholith and to the east by the Pioneer Dome
Batholith. The dominant unit that hosts gold mineralisation is a
fine grained, weak to strongly foliated amphibole-plagioclase
amphibolite, with a typically lepidoblastic (mineralogically
aligned and banded) texture. It is west-dipping and generally
steep, approximately 60° to 75°.
- The Lake Cowan
project area is situated near the centre of a regional anticline
between the Zuleika and Lefroy faults, with the local geology of
the area made more complex by the intrusion of the massive
Proterozoic Binneringie dyke. The majority of mineralisation at the
Lake Cowan Mining Centre is hosted within an enclave of Archaean
material surrounded by the Binneringie dyke.
- Mineralised zones
within the Southern Paleo Channels network comprise both placer
gold, normally near the base of the channel-fill sequences, and
chemically-precipitated secondary gold within the channel-fill
materials and underlying saprolite. These gold concentrations
commonly overlie, or are adjacent to, primary mineralised zones
within Archaean bedrock.
- The Mount Henry
Project covers 347km2 of the prolific South Norseman‐Wiluna
Greenstone belt of the Eastern Goldfields in Western Australia.
Although the greenstone rocks from the Norseman area can be broadly
correlated with those of the Kalgoorlie – Kambalda region they form
a distinct terrain which is bounded on all sides by major regional
shears. The Norseman Terrane has prominent banded iron formations
which distinguish it from the Kalgoorlie– Kambalda Terrane. The
Mount Henry gold deposit is hosted by a silicate facies BIF unit
within the Noganyer Formation. Gold mineralisation is predominantly
hosted by the silicate facies BIF unit but is also associated with
minor meta‐basalt and dolerite units that were mostly emplaced in
the BIF prior to mineralisation. The footwall to the BIF is
characterised by a sedimentary schistose unit and the hanging wall
by the overlying dolerites of the Woolyeener Formation. The Mount
Henry gold deposit is classified as an Archean, orogenic shear
hosted deposit. The main lode is an elongated, shear‐hosted body,
1.9km long by 6 – 10 metres wide and dips 65‐75 degrees towards the
west.
- The Polar Bear
project is situated within the Archaean Norseman-Wiluna Belt which
locally includes basalts, komatiites, metasediments, and felsic
volcaniclastics. The primary gold mineralisation is related to
hydrothermal activity during multiple deformation events.
Indications are that gold mineralisation is focused on or near to
the stratigraphic boundary between the Killaloe and Buldania
Formation.
- The Spargos Project
occurs within Coolgardie Domain of the Kalgoorlie Terrane. The area
is bounded by the Zuleika Shear to the east and the Kunanalling
Shear to the west. The geological setting comprises tightly-folded
north-south striking ultramafic and mafic volcanic rocks at the
northern closure Widgiemooltha Dome. The project lies on the
general trend of the Kunanalling / Karramindie Shear corridor, a
regional shear zone that hosts significant mineralisation to the
north at Ghost Crab (Mount Marion), Wattle Dam to the south, the
Penfolds group and Kunanalling. The regional prospective Zuleika
Shear lies to the east of the project. The tenements are
prospective for vein and shear hosted gold deposits as demonstrated
by Spargos Reward and numerous other gold workings and occurrences.
Gold mineralisation at Spargos Reward is hosted by a coarse-grained
pyrite-arsenopyrite lode in quartz-sericite schists, between
strongly biotitic altered greywacke to the east and
quartz-sericite-fuchsite-pyrite altered felsic tuff to the west.
Gold mineralisation is associated with very little quartz veining
which is atypical for many deposits in region. The Spargos Reward
setting has been described variously as a low-quartz sulphidic
mesothermal gold system or as a Hemlo style syn-sedimentary
occurrence.
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MGO
- MGO is located in
the Achaean Murchison Province, a granite-greenstone terrane in the
northwest of the Yilgarn Craton. Greenstone belts trending
north-northeast are separated by granite-gneiss domes, with smaller
granite plutons also present within or on the margins of the
belts.
- The Paddy's Flat
area is located on the western limb of a regional fold, the Polelle
Syn- cline, within a sequence of mafic to ultramafic volcanics with
minor interflow sediments and banded iron-formation. The sequence
has also been intruded by felsic porphyry dykes prior to
mineralisation. Mineralisation is located along four sub-parallel
trends at Paddy's Flat which can be summarized as containing three
dominant mineralisation styles:
- Sulphide
replacement BIF hosted gold. Quartz vein hosted shear-related
gold.
- Quartz-carbonate-sulphide stockwork vein and
alteration related gold.
- The Yaloginda area
is a gold-bearing Archaean greenstone belt situated ~15km south of
Meekatharra. The deposits in the area are hosted in a strained and
metamorphosed volcanic sequence that consists primarily of
ultramafic and high-magnesium basalt with minor komatiite,
peridotite, gabbro, tholeiitic basalt and interflow sediments. The
sequence was intruded by a variety of felsic porphyry and
intermediate sills and dykes.
- The Reedy's mining
district is located approximately 15 km to the south-east to
Meekatharra and to the south of Lake Annean. The Reedy gold
deposits occur with- in a north-south trending greenstone belt, two
to five kilometres wide, composed of volcano-sedimentary sequences
and separated multiphase syn- and post-tectonic granitoid
complexes. Structurally controlled the gold occur.
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Drill hole
Information
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- A summary of all
information material to the understanding of the exploration
results including a tabulation of the following information for all
Material drill holes:
- easting and
northing of the drill hole collar
- elevation or RL
(Reduced Level – elevation above sea level in metres) of the drill
hole collar
- dip and azimuth of
the hole
- down hole length
and interception depth
- hole
length.
- If the exclusion of
this information is justified on the basis that the information is
not Material and this exclusion does not detract from the
understanding of the report, the Competent Person should clearly
explain why this is the case.
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- Tables containing
drillhole collar, downhole survey and intersection data are
included in the body of the announcement.
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Data aggregation
methods
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- In reporting
Exploration Results, weighting averaging techniques, maximum and/or
minimum grade truncations (e.g., cutting of high grades) and
cut-off grades are usually Material and should be
stated.
- Where aggregate
intercepts incorporate short lengths of high-grade results and
longer lengths of low-grade results, the procedure used for such
aggregation should be stated and some typical examples of such
aggregations should be shown in detail.
- The assumptions
used for any reporting of metal equivalent values should be clearly
stated.
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- All results
presented are length weighted.
- No high-grade cuts
are used.
- Reported results
contain no more than two contiguous metres of internal dilution
below 0.5g/t. For Beta Hunt, a cut off of 1 g/t Au with maximum
internal waste of 2m is used to define significant
intercepts.
- Results are
reported above a variety of gram / metre cut-offs dependent upon
the nature of the hole. These are cut-offs are clearly stated in
the relevant tables.
- Unless indicated to
the contrary, all results reported are downhole width.
- Given restricted
access in the underground environment the majority of drillhole
intersections are not normal to the orebody.
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Relationship between
mineralisation widths and intercept lengths
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- These relationships
are particularly important in the reporting of Exploration
Results.
- If the geometry of
the mineralisation with respect to the drill hole angle is known,
its nature should be reported.
- If it is not known
and only the down hole lengths are reported, there should be a
clear statement to this effect (e.g., 'down hole length, true width
not known').
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- Unless indicated to
the contrary, all results reported are downhole width.
- Given restricted
access in the underground environment the majority of drillhole
intersections are not normal to the orebody.
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Diagrams
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- Appropriate maps
and sections (with scales) and tabulations of intercepts should be
included for any significant discovery being reported These should
include, but not be limited to a plan view of drill
hole collar locations and appropriate sectional views.
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- Appropriate
diagrams are provided in the body of the release if
required.
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Balanced
reporting
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- Where comprehensive
reporting of all Exploration Results is not practicable,
representative reporting of both low and high grades and/or widths
should be practiced to avoid misleading reporting of Exploration
Results.
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- Appropriate balance
in exploration results reporting is provided.
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Other substantive
exploration data
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- Other exploration
data, if meaningful and material, should be reported including (but
not limited to): geological observations; geophysical survey
results; geochemical survey results; bulk samples – size and method
of treatment; metallurgical test results; bulk density,
groundwater, geotechnical and rock characteristics; potential
deleterious or contaminating substances.
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- There is no other
substantive exploration data associated with this
release.
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Further
work
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- The nature and
scale of planned further work (e.g. tests for lateral extensions or
depth extensions or large-scale step-out drilling).
- Diagrams clearly
highlighting the areas of possible extensions, including the main
geological interpretations and future drilling areas, provided this
information is not commercially sensitive.
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- Ongoing surface and
underground exploration activities will be undertaken to support
continuing mining activities at Westgold Gold
Operations.
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SECTION 3: ESTIMATION AND REPORTING OF MINERAL
RESOURCES
(Criteria listed in section 1, and where relevant in section 2,
also apply to this section.)
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Criteria
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JORC Code
Explanation
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Commentary
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Database
integrity
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- Measures taken to
ensure that data has not been corrupted by, for example,
transcription or keying errors, between its initial collection and
its use for Mineral Resource estimation purposes.
- Data validation
procedures used.
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- The database used
for the estimation was extracted from the Westgold's DataShed
database management system stored on a secure SQL
server.
- As new data is
acquired it passes through a validation approval system designed to
pick up any significant errors before the information is loaded
into the master database.
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Site
visits
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- Comment on any site
visits undertaken by the Competent Person and the outcome of those
visits.
- If no site visits
have been undertaken indicate why this is the case.
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- Mr. Russell visits
Westgold Gold Operations regularly.
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Geological
interpretation
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- Confidence in (or
conversely, the uncertainty of) the geological interpretation of
the mineral deposit.
- Nature of the data
used and of any assumptions made.
- The effect, if any,
of alternative interpretations on Mineral Resource
estimation.
- The use of geology
in guiding and controlling Mineral Resource estimation.
- The factors
affecting continuity both of grade and geology.
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- Mining in the
Murchison and Goldfields districts has occurred since 1800's
providing significant confidence in the currently geological
interpretation across all projects.
- Confidence in the
geological interpretation at BHO is high. The current geological
interpretation has been a precursor to successful mining over the
years and forms the basis for the long-term life of mine plan
(LOM). The data and assumptions used do suggest that any
significant alternative geological interpretation is
unlikely.
- Geology
(lithological units, alterations, structure, veining) have been
used to guide and control Mineral Resource estimation for Beta Hunt
and HGO
- No alternative
interpretations are currently considered viable.
- Geological
interpretation of the deposit was carried out using a systematic
approach to ensure that the resultant estimated Mineral Resource
figure was both sufficiently constrained, and representative of the
expected sub-surface conditions. In all aspects of resource
estimation the factual and interpreted geology was used to guide
the development of the interpretation.
- Geological matrixes
were established to assist with interpretation and construction of
the estimation domains.
- The structural
regime is the dominant control on geological and grade continuity
in the Murchison and Goldfields. Lithological factors such as
rheology contrast are secondary controls on grade
distribution.
- Low-grade
stockpiles are derived from previous mining of the mineralisation
styles outlined above.
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Dimensions
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- The extent
and variability of the Mineral
Resource expressed as length (along
strike or otherwise), plan width, and depth below surface to
the upper and lower limits of the ineral Resource.
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BHO
- A-Zone extends over
2.2km strike length and is modelled to a vertical depth of 960m. It
has variable thickness from 2m to 20m thick.
- Western Flanks has
a strike extent of 1.8km and is modelled to a vertical extent of
450m, with average thickness of the shear around 10m.
- Larkin extends over
1.1km in strike length and is modelled to 400m vertical extent,
with variable thickness ranging from 2m to 15m thick.
- Mason has a strike
extent of 1.1km and is modelled to 455m vertical extent with
variable thickness between 7 to 15m.
CGO
- The Big Bell Trend
is mineralised a strike length of >3,900m, a lateral extent of
up +50m and a depth of over 1,500m.
- Great Fingall is
mineralised a strike length of >500m, a lateral extent of
>600m and a depth of over 800m.
- Black Swan South is
mineralised a strike length of >1,700m, a lateral extent of up
+75m and a depth of over 300m.
FGP
- The Yarlarweelor
mineral resource extends over 1,400m in strike length, 570m in
lateral extent and 190m in depth.
- The Tom's and Sam's
mineral resource extends over 650m in strike length, 400m in
lateral extent and 130m in depth.
- The Eldorado
mineral resource extends over 240m in strike length, 100m in
lateral extent and 100m in depth.
HGO
- Trident, Fairplay,
Vine and Two Boy's deposits form the Line of Lode system and
extends over 5km of strike.
- Chalice
mineralisation has been defined over a strike length of 700m, a
lateral extent of 200m and a depth of 650m.
- The Pioneer
resource area extends over a strike length of 860m from 6,474,900mN
to 6,475,760mN. The multiple NS striking parallel lodes occur
within a narrow EW extent of 190m from 374,970mE to 375,160mE.
Mineralisation has been modelled from surface at 291mRL to a
vertical depth 208m to the 83mRL.
- Southern
paleochannels gold mineralisation is interpreted to have a strike
length around 4km and is predominantly flat lying.
- The Wills deposit
extends over 900m in a ENE-WSW direction and is up to 200m wide.
Pluto is confirmed between sections 6,480,100mN and 6,481,800mN.
Nanook is confirmed between sections 6,469,300mN and
6,472,500mN.
- Lake Cowan:
Atreides mineralisation is contained within flat lying lodes
located within the weathered zone. The mineralision strike extents
vary between 100m to 300m long, with an average thickness of 2 to 3
m thick. Josephine has a strike length greater than 450m and
>10m across strike and modelled to >90m at depth. Louis has a
strike extent of 310m long and is interpreted to a depth of 170m
below surface. Napoleon: ~220m strike and up to ~90m (individual
mineralised lodes maximum of 12m) across strike to an interpreted
depth of ~80m m below surface. Rose's dimension is 150m x 120m (X,
Y), to an interpreted depth of +20-25m below surface.
- The Spargos
resource area extends over a strike length of 330m from 6,542,980mN
to 6,543,310mN. The parallel lodes occur within a narrow EW extent
of 95m from 354,120mE to 354,215mE. Mineralisation has been
modelled from surface at 425mRL to a vertical depth 525m to
-100mRL.
MGO
- The Paddy's Flat
Trend is mineralised a strike length of >3,900m, a lateral
extent of up +230m and a depth of over 500m.
- Bluebird is
mineralised a strike length of >1,800m, a lateral extent of up
+50m and a depth of over 500m.
- Triton – South Emu
is mineralised a strike length of >1,100m, a lateral extent of
several metres and a depth of over 500m.
STOCKPILES
- Low-grade
stockpiles are of various dimensions. All modelling and estimation
work undertaken by Westgold is carried out in three dimensions via
Surpac Vision.
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Estimation and
modelling techniques.
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- The nature and
appropriateness of the estimation technique(s) applied and key
assumptions, including treatment of extreme grade values,
domaining, interpolation parameters, maximum distance of
extrapolation from data points.
- The availability of
check estimates, previous estimates and/or mine production records
and whether the Mineral Resource estimate takes appropriate account
of such data.
- The assumptions
made regarding recovery of by-products.
- Estimation of
deleterious elements or other non-grade variables of economic
significance (e.g. sulphur for acid mine drainage
characterisation).
- In the case of
block model interpolation, the block size in relation to the
average sample spacing and the search employed.
- Any assumptions
behind modelling of selective mining units.
- Any assumptions
about correlation between variables.
- The process of
validation, the checking process used, the comparison of model data
to drillhole data, and use of reconciliation data if
available.
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- After validating
the drillhole data to be used in the estimation, interpretation of
the orebody is undertaken in sectional and / or plan view to create
the outline strings which form the basis of the three-dimensional
orebody wireframe. Wireframing is then carried out using a
combination of automated stitching algorithms and manual
triangulation to create an accurate three-dimensional
representation of the sub-surface mineralised body.
- Drillhole
intersections within the mineralised body are defined, these
intersections are then used to flag the appropriate sections of the
drillhole database tables for compositing purposes. Drillholes are
subsequently composited to allow for grade estimation. In all
aspects of resource estimation, the factual and interpreted geology
was used to guide the development of the
interpretation.
- Once the sample
data has been composited, a statistical analysis is undertaken to
assist with determining estimation search parameters, top-cuts etc.
Variographic analysis of individual domains is undertaken to assist
with determining appropriate search parameters. Which are then
incorporated with observed geological and geometrical features to
determine the most appropriate search parameters.
- An empty block
model is then created for the area of interest. This model contains
attributes set at background values for the various elements of
interest as well as density, and various estimation parameters that
are subsequently used to assist in resource categorisation. The
block sizes used in the model will vary depending on orebody
geometry, minimum mining units, estimation parameters and levels of
informing data available.
- Grade estimation is
then undertaken, with ordinary kriging estimation method is
considered as standard, although in some circumstances where sample
populations are small, or domains are unable to be accurately
defined, inverse distance weighting estimation techniques will be
used. For very minor lodes, the respective median or average grade
is assigned. Both by-product and deleterious elements are estimated
at the time of primary grade estimation if required. It is assumed
that by- products correlate well with gold. There are no
assumptions made about the recovery of by-products.
- The resource is
then depleted for mining voids and subsequently classified in line
with JORC guidelines utilising a combination of various estimation
derived parameters and geological / mining knowledge.
- This approach has
proven to be applicable to Westgold's gold assets.
- Estimation results
are routinely validated against primary input data, previous
estimates and mining output.
- Good reconciliation
between mine claimed figures and milled figures was routinely
achieved during past production history.
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Moisture
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- Whether the
tonnages are estimated on a dry basis or with natural moisture, and
the method of determination of the moisture content.
|
- Tonnage estimates
are dry tonnes.
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Cut-off
parameters
|
- The basis of the
adopted cut-off grade(s) or quality parameters applied.
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- The cut off grades
used for the reporting of the Mineral Resources have been selected
based on the style of mineralisation, depth from surface of the
mineralisation and the most probable extraction
technique.
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Mining factors or
assumptions
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- Assumptions made
regarding possible mining methods, minimum mining dimensions and
internal (or, if applicable, external) mining dilution. It is
always necessary as part of the process of determining reasonable
prospects for eventual economic extraction to consider potential
mining methods, but the assumptions made regarding mining methods
and parameters when estimating Mineral Resources may not always be
rigorous. Where this is the case, this should be reported with an
explanation of the basis of the mining assumptions
made.
|
- Variable by
deposit.
- No mining dilution
or ore loss has been modelled in the resource model or applied to
the reported Mineral Resource.
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Metallurgical
factors or assumptions
|
- The basis for
assumptions or predictions regarding metallurgical amenability. It
is always necessary as part of the process of determining
reasonable prospects for eventual economic extraction to consider
potential metallurgical methods, but the assumptions regarding
metallurgical treatment processes and parameters made when
reporting Mineral Resources may not always be rigorous. Where this
is the case, this should be reported with an explanation of the
basis of the metallurgical assumptions made.
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- Not considered for
Mineral Resource. Applied during the Reserve generation
process.
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Environmental
factors or assumptions
|
- Assumptions made
regarding possible waste and process residue disposal
options. It is always necessary as part of the process of
determining reasonable prospects for eventual economic extraction
to consider the potential environmental impacts of the mining and
processing operation. While at this stage the determination of
potential environmental impacts, particularly for a greenfields
project, may not always be well advanced, the status of early
consideration of these potential environmental impacts should be
reported. Where these aspects have not been considered this should
be reported with an explanation of the environmental assumptions
made.
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- Westgold operates
in accordance with all environmental conditions set down as
conditions for grant of the respective leases.
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Bulk
density
|
- Whether assumed or
determined. If assumed, the basis for the assumptions. If
determined, the method used, whether wet or dry, the frequency of
the measurements, the nature, size and representativeness of the
samples.
- The bulk density
for bulk material must have been measured by methods that
adequately account for void spaces (vugs, porosity, etc.), moisture
and differences between rock and alteration zones within the
deposit.
- Discuss assumptions
for bulk density estimates used in the evaluation process of the
different materials.
|
- Bulk density of the
mineralisation is variable and is for the most part lithology and
oxidation rather than mineralisation dependent.
- A large suite of
bulk density determinations has been carried out across the project
areas. The bulk densities were separated into different weathering
domains and lithological domains
- A significant past
mining history has validated the assumptions made surrounding bulk
density.
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Classification
|
- The basis for the
classification of the Mineral Resources into varying confidence
categories.
- Whether appropriate
account has been taken of all relevant factors (i.e. relative
confidence in tonnage/grade estimations, reliability of input data,
confidence in continuity of geology and metal values, quality,
quantity and distribution of the data).
- Whether the result
appropriately reflects the Competent Person's view of the
deposit.
|
- Resources are
classified in line with JORC guidelines utilising a combination of
various estimation derived parameters, input data and geological /
mining knowledge.
- This approach
considers all relevant factors and reflects the Competent Person's
view of the deposit
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Audits or
reviews
|
- The results of any
audits or reviews of Mineral Resource estimates.
|
- Resource estimates
are peer reviewed by the Corporate technical team.
- No external reviews
have been undertaken.
|
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Discussion of
relative accuracy/ confidence
|
- Where appropriate a
statement of the relative accuracy and confidence level in the
Mineral Resource estimate using an approach or procedure deemed
appropriate by the Competent Person. For example, the application
of statistical or geostatistical procedures to quantify the
relative accuracy of the resource within stated confidence limits,
or, if such an approach is not deemed appropriate, a qualitative
discussion of the factors that could affect the relative accuracy
and confidence of the estimate.
- The statement
should specify whether it relates to global or local estimates,
and, if local, state the relevant tonnages, which should be
relevant to technical and economic evaluation. Documentation should
include assumptions made and the procedures used.
- These statements of
relative accuracy and confidence of the estimate should be compared
with production data, where available.
|
- All currently
reported resource estimates are considered robust, and
representative on both a global and local scale.
- A continuing
history of mining with good reconciliation of mine claimed to mill
recovered provides confidence in the accuracy of the
estimates.
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SOURCE Westgold Resources Limited