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JURISDICTION.
26 April 2024
Cobra Resources
plc
("Cobra"
or the "Company")
Re-Assay Results Confirm High
Grades Over Exceptional Scale at Boland
&
£600,000 Placing Completed to
Advance Work Programme
Cobra
(LSE: COBR), an exploration
company focused on the Wudinna Project ("Wudinna") in South
Australia, is pleased to announce re-assay results which support
regionally scalable, high grade rare earth ("REE") mineralisation
at Boland which is amenable to in situ recovery ("ISR").
In order to accelerate the strategy
to realise the value of Boland, and progress towards a Scoping
Study, the Company is also pleased to announce it has raised gross
proceeds of £600,000 through a placing (the "Placing") of
60,000,000 new ordinary shares of 1p each in the capital of the
Company at a price of 1p per share. Approximately 30% of the
Placing was to Australian investors including certain original
vendors of the Wudinna Project.
Highlights:
Historical drillholes yield
high grades over exceptional scale
·
Extensive Rare
Earth Mineralisation: Significant
intersections of rare earth mineralisation from historical drill
samples of across 11.5km of palaeochannel sediments, supporting the
Company's modelled interpretation of mineralised lithologies
extending over ~139km2 (at Boland alone)
o Results from 13 drillholes (233 samples) received; a further
869 samples from 42 drillholes have been submitted for re-assay and
are expected in the coming weeks
·
De-risking
Economic Recovery of Ionic REE Mineralisation:
The Australian Nuclear Scientific and Technology
Organisation ("ANSTO") is preparing a column leach trial on core
samples from the installed wellfield to test recovery potential
under ISR conditions
o Results of this work are expected in June 2024
·
High
Grade: Multiple high-grade
intersections where:
o Maximum grade of 2m at 2,708 ppm Total Rare Earth Oxides
("TREO"), where Nd2O3 +
Pr6O11 totals 1,066 ppm and
Dy2O3 + Tb2O3 totals
151 ppm Magnet Rare Earth Oxides ("MREO") 22%, Heavy Rare Earth
Oxides ("HREO") 21% from 2m
·
Valuable
Basket: MREO of intersections
averaging 23% of the TREO, with HREO enrichment up to 37% of the
TREO
·
Shallow: High-grade
mineralisation identified in upper palaeochannel clay zones north
of the recently installed wellfield 2m from surface
Placing to accelerate
development of ionic REE discovery towards a Scoping
Study
·
Raised
£600,000: accelerates strategy to
define economic value from the Boland REE discovery through
advancing ISR as the preferred extraction method, undertaking
Aircore drilling to support a maiden Mineral Resource Estimate over
the interpreted 139km2 of mineralisation, and
progressing metallurgical work in preparation to undertake a
Scoping Study
Rupert Verco, CEO of Cobra,
commented:
"When we first drilled the Boland prospect a year ago, we
believed that the geological conditions were supportive of ionic
mineralisation and amenable to ISR. We are now methodically
de-risking aspects necessary for the Boland prospect to produce a
resource that will have the capacity to change the cost and
environmental profile of magnet and heavy rare earth
mining.
These results validate our interpretation for the potential
scale of ionic mineralisation across the Narlaby Palaeochannel.
With further results to come, we will be able to refine our
interpretations and plan resource drilling to target high-grade
zones of mineralisation. This is exciting, considering that the
interpreted 139km2 at Boland only represents 5%
of the palaeochannels held across Cobra's extensive land
tenure.
Our Sonic core drilling demonstrated high-grade concentration
and these results are supporting scale for a future resource. We
are eagerly awaiting ANSTO's completion of our column ISR tests to
confirm our belief that this mineralisation can be mined by this
most cost-effective form of mining, thus demonstrating the economic
value of the Boland discovery.
Greg Hancock, Chairman of Cobra, commented:
"We are pleased to have received further investor support
today, corner stoned once again by some of the original vendors to
the Company of Wudinna. With 100% of the project now under Cobra's
ownership, these funds will enable us to accelerate progress
towards unlocking the transformational value we believe
exists within this unique geology that has the capacity to alter
the western world's access to critical magnet and heavy rare
earths.
Rupert and the team are experienced in ISR having been
involved in Uranium operations previously. This is a well known and
proven form of mining, and one in which we continue to receive
encouraging evidence to suggest it can be applied to our unique REE
discovery at Boland. "
Boland Re-Assay Results - Significant
Intersections
·
IR 114 intersected 2m at 2,407 ppm TREO, where
Nd2O3 + Pr6O11 totals
737 ppm and Dy2O3 +
Tb2O3 totals 40 ppm (MREO 32%, HREO 11%) from
4m and 2m at 564 ppm TREO, where Nd2O3 +
Pr6O11 totals 130 ppm and
Dy2O3 + Tb2O3 totals 12
ppm (MREO 25%, HREO 15%) from 16m
·
IR 229 intersected 8m at 1,763 ppm TREO, where
Nd2O3 + Pr6O11 totals
354 ppm and Dy2O3 +
Tb2O3 totals 47 ppm (MREO 32%, HREO 21%) from
2m
·
IR 112 intersected 6m at 964 ppm TREO, where
Nd2O3 + Pr6O11 totals
184 ppm and Dy2O3 +
Tb2O3 totals 24 ppm (MREO 22%, HREO 19%) from
42m, including 3m at 1,392 ppm TREO, where
Nd2O3 + Pr6O11 totals
263 ppm and Dy2O3 +
Tb2O3 totals 36 ppm (MREO 21%, HREO 20%) from
42m
·
IR 237 intersected 8m at 641 ppm TREO, where
Nd2O3 + Pr6O11 totals
124 ppm and Dy2O3 +
Tb2O3 totals 19 ppm (MREO 22%, HREO 27%) from
16m
·
IR 117 intersected 2m at 691 ppm TREO, where
Nd2O3 + Pr6O11 totals
148 ppm and Dy2O3 +
Tb2O3 totals 11 ppm (MREO 22%, HREO 12%) from
14m and 4m at 685 ppm TREO, where Nd2O3 +
Pr6O11 totals 187 ppm and
Dy2O3 + Tb2O3 totals 6
ppm (MREO 28%, HREO 10%) from 42m
Boland Strategy
Cobra is progressing the ISR
potential of ionic rare earths from permeable geology, where
metallurgical analysis has yielded high recoveries of MREOs and
HREOs through a simple ammonium nitrate, sulphuric acid wash.
Recently, the Company installed a wellfield in preparation to test
the environmental and cost-effective mining process of
ISR.
ISR is a scalable, low
capital-intensive form of mining already widely used to mine
uranium where permeable, low-grade deposits can be mined with
minimal ground disturbance. Cobra believes that the unique geology
of the Boland prospect can re-shape the preferred process of mining
MREOs and HREOs from ionic clays.
Using historical geophysical logs,
Cobra has modelled the extent of the mineralised geological units
over significant areas of the palaeochannel. Re-assaying of
historical samples supports initial geological assessments for a
scalable, low-cost sourcing of magnet and heavy rare
earths.
Benefits of ISR
Cobra confirmed ionic REE
metallurgical recoveries at Boland in 2023 and recent Sonic core
drilling provided greater geological detail supporting the
Company's thesis that grade concentrations are high, mineralisation
is amenable to low-cost extraction via ISR, and the discovery has
exceptional province-scale potential.
Cobra believes that the amenability
of the permeable palaeochannel geology to ISR has the potential to
differentiate the Boland project from other ionic and clay hosted
REE projects, as ISR:
·
Removes bulk stripping, rehandle and
rehabilitation requirements
·
Does not require crushing or screening to
de-logulate ores
·
Eliminates the need to de-slime clays from
solution
·
Materially reduces water consumption
·
Mitigates ore beneficiation
As ISR bypasses typical mining and
processing steps, the inherent costs of recovery are typically
lower than traditional mines. This is widely demonstrated in the
uranium industry, where:
·
Capital costs of project construction are 10-15%
of the costs attributed to hard rock projects
·
Ongoing costs of ISR production are 30-40% less
than the costs attributed to hard rock uranium mining
1 United States Nuclear
Regulatory Commisions www.nrc.gov TradeTech - the nuclear
review (October 2016)
Figure 1: Plan detailing the
extent of re-analysis results, previous Cobra drilling, pending
assays and the modelled extent of the geological stratigraphy that
hosts 'Zone 3' mineralisation identified in Boland wellfield
drilling
Next Steps
Cobra's strategy to realise the
value of the Boland discovery is to systematically advance the ISR
recoverability of REEs at Boland, whilst defining grade upside and
scale. The forward plan presented in Table 1 summarises the
timeframes for key scopes of work for Boland.
Table 1: Forward work
plan
Discussion of Results
·
In March 2024, the Company announced the results
of a Sonic drilling programme, and the subsequent installation of a
wellfield to advance ISR as the preferred mining method. Narrow
sampling, downhole geophysics and improved geological detail
enabled Cobra's technical team to model the extent of three
geological lithologies (zones 1-3) that host ionic REEs. Modelled
mineralised units support extensive scale where host units have
been modelled across:
o The
geological formation hosting zone 1 mineralisation is mapped across
~128km2
o The
geological formation hosting zone 2 mineralisation is mapped across
~58km2
o The
geological formation hosting zone 3 mineralisation is mapped across
~139km2
·
Modelling was based on the downhole geophysical
responses attributed to each mineralised zone in alignment with a
REPTEM survey flown in 2008 that defines the base of the Narlaby
Palaeochannel
·
Downhole geophysics from historical uranium
focused drilling were digitised, interpreted and wireframes
developed
·
Re-analysis results support the extent of scale
and define intersections across all zones
·
Mineralisation has now been defined along 11.5km
of strike within the Narlaby Palaeochannel. Further re-analysis
shall look to expand and infill the mineralisation
footprint
·
Mineralisation is deeper within the central
regions of the palaeochannel, and less concentrated. This is
interpreted to be a result of fluvial, river streams re-working and
eroding the marine sediments that host the ionic REEs. This
supports targeting the peripheral areas of the palaeochannels for
higher grades
·
Historical results will be used to inform follow
up drilling as:
o Historical 2m downhole sample composites do not represent the
concentrated nature of mineralisation at permeable boundaries,
resulting in poor definition between mineralised zones.
Intersections reported across zones 1 and 2 are
amalgamated
o The
highly concentrated nature of zone 3 is poorly represented by 2m
sample compositing; however, elevated grades support regional
scale
o The
geological controls resulting in shallower mineralisation north of
the Boland wellfield are unknown and require further investigation
to confirm the historical results and test their amenability to
ISR
o Variable basket compositions reflect REE mobility and are a
common trait of ionic rare earth systems, owing to the drainage
nature of the palaeochannel being different to the hydraulic
drivers in typical ionic systems, the distribution and variability
of mineralisation requires follow-up drilling
Table 2: Significant
intersections
Hole Id
|
From (m)
|
To (m)
|
Int (m)
|
TREO
|
Pr6O11
|
Nd2O3
|
Tb2O3
|
Dy2O3
|
MREO %
|
HREO%
|
IR 111
|
12.0
|
16.0
|
4.0
|
445
|
20
|
69
|
2
|
9
|
22%
|
18%
|
IR 112
|
0.0
|
12.0
|
12
|
964
|
42
|
142
|
4
|
20
|
22%
|
19%
|
including
|
0.0
|
6.0
|
6.0
|
1,392
|
58
|
205
|
6
|
30
|
21%
|
20%
|
and
|
20.0
|
22.0
|
2
|
588
|
29
|
90
|
2
|
8
|
22%
|
13%
|
IR 113
|
4.0
|
10.0
|
6
|
952
|
47
|
159
|
3
|
17
|
24%
|
14%
|
and
|
52.0
|
54.0
|
2
|
607
|
31
|
108
|
2
|
12
|
25%
|
17%
|
IR 114
|
4.0
|
6.0
|
2
|
2,407
|
152
|
584
|
7
|
33
|
32%
|
11%
|
and
|
16.0
|
18.0
|
2
|
564
|
29
|
101
|
2
|
10
|
25%
|
15%
|
IR 229
|
2.0
|
10.0
|
8
|
1,763
|
74
|
280
|
7
|
40
|
23%
|
21%
|
and
|
12.0
|
14.0
|
2
|
552
|
29
|
97
|
2
|
8
|
25%
|
13%
|
IR 230
|
12.0
|
16.0
|
4
|
454
|
20
|
71
|
2
|
9
|
22%
|
19%
|
and
|
46.0
|
50.0
|
4
|
971
|
49
|
142
|
2
|
8
|
21%
|
8%
|
IR 117
|
14.0
|
16.0
|
2
|
691
|
32
|
106
|
2
|
9
|
22%
|
12%
|
and
|
42.0
|
46.0
|
4
|
685
|
43
|
144
|
1
|
5
|
28%
|
10%
|
IR 118
|
48.0
|
50.0
|
2
|
1,683
|
33
|
105
|
2
|
8
|
9%
|
5%
|
IR 237
|
16.0
|
24.0
|
8.0
|
641
|
26
|
97
|
3
|
16
|
22%
|
27%
|
£600,000 Placing
Cobra has raised gross proceeds of
£600,000 through the Placing of 60,000,000 new ordinary shares of 1
pence each in the capital of the Company (the "Placing Shares") at
a price of 1p per share (the "Placing Price"), representing a
discount of approximately 3% to the mid-market closing share price
on 25 April 2024.
Following the completion of the
acquisition of 100% of the Wudinna Project as announced on 22 April
2024, the Company has raised funds to advance the work programme
summarised in Table 1 above to define economic value from the
Boland REE discovery through:
·
Advancing ISR - a low-cost, low-disturbance mining
process that could be integrated into existing land practices - as
the preferred mining and extraction method
·
Undertaking Aircore drilling to support a maiden
Mineral Resource Estimate for ionic REEs
·
Progressing metallurgical work beyond the
currently funded programme to optimise a flowsheet which will
enable the company to commence a Scoping Study on the development
of the resource
Approximately 30% of the Placing was
to Australian investors including certain of the original vendors
to the Company of Wudinna.
The Placing has been conducted
within the currently available share authorities.
Admission of Placing
Shares
The Company has made applications to
the FCA and the London Stock Exchange in
connection with the admission of the Placing Shares, which is
expected to occur at 8.00 a.m. on 2 May
2024 ("Admission").
Total Voting Rights
The Company hereby notifies the
market, in accordance with the FCA's Disclosure Guidance
and Transparency Rule 5.6.1, that, on Admission, the Company's
issued share capital will consist of 726,559,550 ordinary shares,
each with one vote. The Company does not hold any ordinary shares
in treasury. On Admission, the total number of voting rights in the
Company will be 726,559,550 and this figure may be used by
shareholders as the denominator for the calculations by which they
will determine if they are required to notify their interest in, or
a change to their interest in, the Company under
the FCA's Disclosure Guidance and Transparency
Rules.
Enquiries:
Cobra Resources plc
Rupert Verco (Australia)
Dan Maling (UK)
|
via Vigo
Consulting
+44 (0)20
7390 0234
|
SI
Capital Limited (Joint Broker)
Nick Emerson
Sam Lomanto
|
+44
(0)1483 413 500
|
Global Investment Strategy (Joint Broker)
James Sheehan
|
+44 (0)20
7048 9437
james.sheehan@gisukltd.com
|
Vigo
Consulting (Financial Public Relations)
Ben Simons
Kendall Hill
|
+44 (0)20
7390 0234
cobra@vigoconsulting.com
|
The person who arranged for the
release of this announcement was Rupert Verco, Managing Director of
the Company.
Information in this announcement
relates to exploration results that have been reported in the
following announcements:
·
Wudinna Project Update: "Drilling results from
Boland Prospect", dated 25 March 2024
·
Wudinna Project Update: "Historical Drillhole
Re-Assay Results", dated 27 February 2024
·
Wudinna Project Update: "Ionic Rare Earth
Mineralisation at Boland Prospect", dated 11 September
2023
·
Wudinna Project Update: "Exceptional REE Results
Defined at Boland", dated 20 June 2023
Competent Persons Statement
Information and data presented
within this announcement has been compiled by Mr Robert Blythman, a
Member of the Australian Institute of
Geoscientists ("MAIG"). Mr Blythman is a Consultant
to Cobra Resources Plc and has sufficient experience,
which is relevant to the style of mineralisation, deposit type and
to the activity which he is undertaking to qualify as a Competent
Person defined by the 2012 Edition of the Australasian Code for
Reporting Exploration Results, Mineral Resources and Ore Reserves
(the "JORC" Code). This includes 10 years of Mining, Resource
Estimation and Exploration relevant to the style of
mineralisation.
Information in this announcement has
been assessed by Mr Rupert Verco, a Fellow of the Australasian
Institute of Mining and Metallurgy. Mr Verco is an employee of
Cobra and has more than 16 years' industry experience which is
relevant to the style of mineralisation, deposit type, and activity
which he is undertaking to qualify as a Competent Person as defined
in the 2012 Edition of the Australasian Code for Reporting
Exploration Results, Mineral Resources and Ore Reserves of JORC.
This includes 11 years of Mining, Resource Estimation and
Exploration.
About Cobra
Cobra is defining a unique
multi-mineral resource at the Wudinna Project in South Australia's
Gawler Craton, a tier one mining and exploration jurisdiction which
hosts several world-class mines. Cobra's Wudinna tenements
totalling 1,832km2, and other nearby tenement rights
totalling 2,941km2, contain highly desirable and ionic rare earth mineralisation amenable
to low-cost, low impact in situ recovery mining, and critical to
global decarbonisation. Cobra's greater Wudinna tenements are also
prospective for uranium. Additionally, Cobra holds a
213km2 exploration tenement in northern Tasmania which
is also considered highly prospective for ionic rare earth
mineralisation.
Cobra's Wudinna tenements also
contain extensive orogenic gold mineralisation and are
characterised by potentially open-pitable, high-grade gold
intersections, with ready access to infrastructure. Cobra has 22
orogenic gold targets outside of the current 279,000 Oz gold JORC
Mineral Resource Estimate, and several iron oxide copper gold
(IOCG) targets.
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Appendix 1: JORC Code, 2012 Edition
- Table 1
Section 1 Sampling Techniques and Data
Criteria
|
JORC Code
explanation
|
Commentary
|
Sampling
techniques
|
·
Nature and
quality of sampling (eg 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 (eg '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 (eg submarine nodules)
may warrant disclosure of detailed information.
|
·
Rotary mud and aircore drilling were used to
obtain 1m - 2m sample intervals.
·
A number of core holes were drilled to validate
aircore results and estimate gamma radiation
disequilibrium.
·
Carpentaria Exploration Company Pty Ltd conducted
drilling between 1979 - 1984.
|
Drilling
techniques
|
·
Drill type (eg
core, reverse circulation, open-hole hammer, rotary air blast,
auger, Bangka, sonic, etc) and details (eg 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).
|
· All
drillholes were drilled at 90 degrees (vertical) due to the
flat-lying nature of mineralisation.
· NQ
diameter (76mm) drill holes were used to obtain 1m down-hole
samples.
· Drillholes were wireline logged using undisclosed gamma
tools.
· Core
samples from twinned aircore holes were used to determine sample
representation and disequilibrium between gamma measured radiation
and actual Uranium quantities.
|
Drill sample
recovery
|
·
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.
·
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.
|
· Reports imply that samples obtained by aircore drilling were
considered superior owing to circulation problems encountered with
rotary mud drilling.
· 1m
sample composites are considered to provide reasonable
representation of the style of mineralisation.
· 2m
samples are indicative of the lateral distribution of rare earth
grade and the approximate stratigraphic location of the rare earth
grade.
|
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.
|
· Drillhole samples were logged by a onsite geologist and
correlated to downhole geophysical logs that demonstrate
correlation between lithology units and gamma peaks.
· Oxidation state and the presence of reductants were
logged
· Sample
loss was recorded
· Pulps
have been reviewed and correlated to logging.
|
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.
|
· Limited information concerning subsampling techniques is
available.
· Twinned core holes, measured disequilibrium factors and
duplicate sampling imply quality control.
|
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 (eg standards, blanks,
duplicates, external laboratory checks) and whether acceptable
levels of accuracy (ie lack of bias) and precision have been
established.
|
· Original historic select samples were sent to COMLABS for XRF
and AAS analysis. Sample suites were variable across
submissions.
· Historic results are considered semiquantitative, further
re-assays would increase the confidence of historic sample
results.
· Chip
reassays were analysed via a 4 acid digest. This method is
considered a near total digest. Rare earth minerals have potential
for incomplete digestion. These minerals are not considered as
potential sources of extractable mineralization in this deposit
type.
|
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.
|
· Significant intercepts have been reviewed by Mr Rupert Verco
and reviewed by Mr Robert Blythman (the competent
persons)
· Historic cuttings samples retained within the Tonsely core
library have been secured and are being re-analysed to confirm
results.
|
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.
|
· Collar
locations have been sourced from the SARIG publicly available
dataset.
· Drill
collars were surveyed on local grids established using ensign GPS.
Coordinates have been transposed to MGA94 Zone 53.
|
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.
|
·
Samples were selected to provide representative
regional indicators of geology and mineralization without a fixed
spacing
·
No sample compositing has been applied
·
The data spacing and distribution is sufficient to
establish the degree of geological and grade continuity appropriate
for the interpretation of roll-front, sandstone hosted Uranium
mineralisation.
·
Interpretation of historic results supports the
flat lying continuous mineralisation.
|
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.
|
·
Drillholes were vertical and drilled perpendicular
to the mineralization.
|
Sample
security
|
·
The measures
taken to ensure sample security.
|
·
The security procedures are unknown
|
Audits or
reviews
|
·
The results of
any audits or reviews of sampling techniques and
data.
|
·
No independent audits have been
undertaken.
·
The CSIRO re-analysed mineralized intersections,
actively too water samples and validated the factors of
disequilibrium being used to estimate Uranium grade.
·
Proceeding tenement holders confirmed Uranium
grades.
·
Cobra currently re-analysing results to confirm
Uranium grades.
|
Appendix 2: Section 2 Reporting of
Exploration Results
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.
|
·
EL6967 & 6968 are 100% held by Lady Alice
Mines Pty Ltd, a Cobra Resources Plc company.
·
Native title agreements need to be gained before
land access by the department of Environment and Water can be
granted.
|
Exploration done by other
parties
|
·
Acknowledgment
and appraisal of exploration by other parties.
|
·
Carpentaria: 1979-1984 explored for Sandstone
hosted Uranium.
·
Mount Isa Mines: 1984-1988 explored for Sandstone
hosted Uranium
·
BHP: 1989-1992 explored for heavy mineral sands
(HMS) and base metal
·
Peko Exploration: 1991-1992
·
Diamond Ventures explored for diamonds in
Kimberlites during the 1990s
·
Iluka: 2005-2016 explored for HMS and
Uranium
·
Minatour Exploration: 2000-2004 explored for
Sandstone hosted Uranium and IOCG mineralisation
·
Toro Energy Limited: 2004-2008 explored for
sandstone hosted Uranium
|
Geology
|
·
Deposit type,
geological setting and style of mineralisation.
|
·
Basement Geology is dominated by Archean Sleaford
and Proterozoic Hiltaba Suite Granites.
·
Granite plutons are enriched in uranium bearing
minerals with background U being ~10-20 times
background.
·
The Narlaby Palaeochanel and Eucla Basins overlie
basement rocks Interbedded channel sands sourced from local bedrock
and Eocene age clays are interbedded within the Palaeochannel and
basin.
·
Highly enrich groundwaters within the
Palaeochannel suggest the mobilization from both channel fill and
regional basement for Uranium and REE.
·
Uranium mineralisation is hosted in Roll-front
style mineralisation when fluids are oxidizing reduced channel
sediments
·
REE's are adsorbed to the contacts of reduced clay
interbeds.
|
Drillhole
Information
|
·
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:
o easting and northing of the
drill hole collar
o elevation or RL (Reduced
Level - elevation above sea level in metres) of the drill hole
collar
o dip and azimuth of the
hole
o down hole length and
interception depth
o 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.
|
·
Plans demonstrate the location of
drillholes.
·
Coordinates can be publicly accesses through the
South Australian SARIG portal.
·
No relevant material has been excluded from this
release.
|
Data aggregation
methods
|
·
In reporting
Exploration Results, weighting averaging techniques, maximum and/or
minimum grade truncations (eg 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.
|
·
Reported summary intercepts are weighted averages
based on length.
·
No maximum/ minimum grade cuts have been
applied.
·
eU3O8 grades have been calculated using a
disequilibrium factor of 1.8
|
Relationship between
mineralisation widths and intercept lengths
|
·
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 (eg 'down hole length, true width
not known').
|
·
Holes are drilled vertically. Reported
intersections reflect true width.
|
Diagrams
|
·
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.
|
·
Relevant diagrams have been included in the
announcement.
|
Balanced
reporting
|
·
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 misIeading reporting of
Exploration Results.
|
·
All drillhole locations have been shown on
plans
|
Other substantive exploration
data
|
·
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.
|
·
Reported results reflect publicly available
information.
|
Further
work
|
·
The nature and
scale of planned further work (eg 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.
|
·
Re-analysis of historical drill samples is
underway. Samples shall be analysed for REE and Uranium to confirm
historical results.
·
Previous TEM surveys are being re-interpreted to
improve Palaeochannel interpretation and to identify potential
pathways of fluid oxidation.
·
Ground water sampling planned.
·
Digitization of downhole wireline logs to
re-interpret mineralized roll-fronts.
|
Prospect
|
Hole Number
|
Grid
|
Northing
|
Easting
|
Elevation
|
Boland
|
IR
111
|
GDA94 /
MGA zone 53
|
6369173
|
532029
|
105
|
Boland
|
IR
112
|
GDA94 /
MGA zone 53
|
6369173
|
533029
|
100
|
Boland
|
IR
113
|
GDA94 /
MGA zone 53
|
6369173
|
534004
|
105
|
Boland
|
IR
114
|
GDA94 /
MGA zone 53
|
6367673
|
534629
|
105
|
Boland
|
IR
115
|
GDA94 /
MGA zone 53
|
6365973
|
534880
|
103
|
Boland
|
IR
116
|
GDA94 /
MGA zone 53
|
6364173
|
534404
|
105
|
Boland
|
IR
117
|
GDA94 /
MGA zone 53
|
6365173
|
534704
|
105
|
Boland
|
IR
118
|
GDA94 /
MGA zone 53
|
6364173
|
533129
|
114
|
Boland
|
IR
119
|
GDA94 /
MGA zone 53
|
6364573
|
532130
|
120
|
Boland
|
IR
228
|
GDA94 /
MGA zone 53
|
6372473
|
531729
|
112
|
Boland
|
IR
229
|
GDA94 /
MGA zone 53
|
6370873
|
533029
|
104
|
Boland
|
IR
230
|
GDA94 /
MGA zone 53
|
6370873
|
532429
|
102
|
Boland
|
IR
232
|
GDA94 /
MGA zone 53
|
6365773
|
532729
|
114
|
Boland
|
IR
234
|
GDA94 /
MGA zone 53
|
6365573
|
533629
|
115
|
Boland
|
IR
235
|
GDA94 /
MGA zone 53
|
6365273
|
534229
|
107
|
Boland
|
IR
237
|
GDA94 /
MGA zone 53
|
6361573
|
535129
|
117
|