Drilling Report
06 Dicembre 2010 - 8:47AM
UK Regulatory
TIDMBKY
RNS Number : 4061X
Berkeley Resources Limited
06 December 2010
6 December 2010
BERKELEY RESOURCES LIMITED
Drilling Update - Salamanca Uranium Project
Berkeley is pleased to announce final results from the reverse circulation (RC)
drilling program at Sageras, including the new north-west extension, and
commencement of diamond drilling to obtain sufficient samples for Phase 2 of the
Feasibility Study metallurgical test work program.
Final chemical assay results from the RC drilling program at Sageras extend the
new north-west zone for 200 metres beyond the current resource outline. A
follow up program RC drilling program is planned to determine the limits of this
extension.
A 70 hole, 5000m diamond drilling program, located entirely within the proposed
mine plan, has commenced at Sageras and Alameda South, and will be followed by
drilling at Palacios North. A third rig will commence drilling at the Retortillo
deposit in the next few weeks.
The e-grade results from the first eight diamond holes at Sageras show excellent
correlation in both grade and thickness, with the updated resource model
announced in September. Notable intersections are shown in Table 1.
Table 1 - Notable Intersections
+---------+-------+-------+----------+-------+
| Hole | From | To |Interval |eU3O8 |
| ID | | | | |
+---------+-------+-------+----------+-------+
| | (m) | (m) | (m) |(ppm) |
+---------+-------+-------+----------+-------+
|SGD-056 |11.36 |14.46 | 3.10 |1,717 |
+---------+-------+-------+----------+-------+
| |33.29 |39.61 | 6.32 |3,578 |
+---------+-------+-------+----------+-------+
|SGD-060 | 8.76 |23.45 | 14.69 | 303 |
+---------+-------+-------+----------+-------+
| |25.25 |32.62 | 7.37 | 948 |
+---------+-------+-------+----------+-------+
| |37.18 |52.88 | 15.70 | 857 |
+---------+-------+-------+----------+-------+
|SGD-061 |12.10 |19.23 | 7.13 |1,285 |
+---------+-------+-------+----------+-------+
Commenting on this development the Managing Director of Berkeley Resources, Mr.
Ian Stalker said:
"The encouraging results from the initial heap leach test work already
undertaken at SGS in Perth have enabled the commencement of the next phase
involving larger scale tests that require significantly more material. The
early start of the drilling at Sageras and Alameda South, and the initial
results, confirm that we are on track with the second phase of the metallurgical
test work program."
Enquiries - Managing Director: Ian Stalker Tel: +34
608 221 497
RBC Capital Markets: Martin Eales Tel:
+44 20 7029 7881
Salamanca Uranium Project
The Salamanca Uranium Project (SUP) consists of four areas containing a number
of
metasedimentary hosted uranium deposits located in the western part of the
Salamanca Province in Spain.
Berkeley commenced a Feasibility Study process for the SUP in May 2009,
following Cabinet approval of the Co-Operation Agreement between Berkeley and
ENUSA. The Feasibility Study is progressing in 2 separate phases:
1. Phase 1 is focusing on a tank leach scenario with a production rate of 2.1
Mlbs (0.95 Kt) of U3O8 per annum with the Sageras and Palacios North deposits
providing the initial feed to the Quercus Plant.
2. Phase 2 aims to increase the production rate up to 5 Mlbs (2.3 Kt) of U3O8
per annum by establishing heap leach operations at Alameda and Retortillo.
Berkeley has already completed a number of drilling campaigns as part of the SUP
Feasibility Study:
· A 5,000m confirmatory diamond drilling program commenced in October 2009 at
the Sageras, Palacios North and Alameda South deposits. The program was
completed in March 2010 and succeeded in confirming the historical data as well
as highlighting potential extensions to the known mineralisation.
· An 8,000m RC infill drilling program commenced in June 2010 at the Sageras,
Palacios North and Alameda South deposits. The program was completed in August
2010 and successfully upgraded and increased the resources at Sageras and
Alameda South.
· A 1,400m metallurgical diamond drilling program was completed at the Sageras
and Alameda South deposits. Over 14 tonnes of diamond drill core was collected
and sent to SGS laboratories in Perth.
RC Drilling Results
Final chemical assay results from the RC drilling program at Sageras West
included a number of holes with mineralisation that were not included in the
Mineral Resource update announced in September.
As a result the new zone of mineralisation at Sageras West has been extended
more than 200m to the north-west, and is still open. A detailed review of the
drilling results, ground radiometrics and gamma activity data from soil samples
indicate 2 separate zones of mineralisation that could extend the resource
limits a further 500m to the north-west, albeit at lower grade. The area is
partially covered with tertiary and quaternary material which masks the
radiometric signature.
Metallurgical Diamond Drilling
Up to 21 tonnes of material is required to enable the Phase 2 Feasibility Study
metallurgical test work (Table 2). All of this material will be sourced from PQ
diamond drill core(core diameter 85mm).
Table 2 - Metallurgical Material
+---------------------+-------+--------+----------+
| Deposit | Drilling |Material |
+---------------------+----------------+----------+
| |Holes |Metres | (kg) |
+---------------------+-------+--------+----------+
| Palacios | 12 | 740 | 2,000 |
| North | | | |
+---------------------+-------+--------+----------+
| Sageras | 23 | 1,520 | 7,000 |
+---------------------+-------+--------+----------+
| Alameda | 26 | 2,120 | 7,000 |
| South | | | |
+---------------------+-------+--------+----------+
| Retortillo/Santidad | 16 | 1,200 | 5,000 |
+---------------------+-------+--------+----------+
| Total | 65 | 4,840 | 21,000 |
+---------------------+-------+--------+----------+
Eight holes have already been completed at Sageras and the e-grade (equivalent
U3O8 ppm grades or eU3O8) intersections above 200 ppm eU3O8 are listed in Table
3. These results give excellent correlation in grade and thickness with
estimated resource blocks.
A second diamond drill rig has commenced drilling at the Alameda South deposit
on Hole ASD-062, the first of the 26 planned holes.
A further 12 metallurgical test work holes are planned at Palacios North.
Retortillo Drilling
Berkeley drilled over 80 RC and diamond holes at the 100% owned Retortillo
deposit in 2007 and over 200 holes at Santidad. Mineral Resource Estimates were
announced for both deposits in 2007 and 2008 and both included a significant
Inferred resource component (63% at Retortillo and 71% at Santidad). A 13,000m
combined DDH and RC drilling program has been planned for these two deposits to
upgrade the Inferred resources to Measured and Indicated, test for lateral and
depth extensions and to generate sufficient drill core for the Phase 2 heap
leach metallurgical test work program. Approval from the Salamanca Mines
Department has been received and drilling should commence in the next few weeks.
Table 3 - Sageras DDH Intersections (e-grades)
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| Hole |Easting |Northing |Elevation |Depth |Azimuth |Dip | From | To |Interval |eU3O8 |
| ID | | | | | | | | | | |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | (m) | (m) | (m) | (m) | (º) |(º) | (m) | (m) | (m) |(ppm) |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
|SGD-056 | 700481 | 4502556 | 653 |46.60 | 0 |-90 |11.36 |14.46 | 3.10 |1,717 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |37.00 |40.58 | 3.58 | 643 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
|SGD-057 | 700481 | 4502556 | 653 |94.80 | 224 |-60 |16.64 |18.14 | 1.50 | 552 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |21.20 |24.43 | 3.23 | 442 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |30.44 |31.70 | 1.26 |2,301 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |33.29 |39.61 | 6.32 |3,578 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
|SGD-058 | 700349 | 4502851 | 645 |92.59 | 224 |-60 |15.09 |19.05 | 3.96 | 359 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |26.02 |28.10 | 2.08 |1,131 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |48.35 |49.56 | 1.21 | 853 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
|SGD-059 | 700349 | 4502851 | 645 |94.88 | 0 |-90 |13.07 |15.61 | 2.54 | 376 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |23.19 |28.80 | 5.61 | 493 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |34.47 |37.36 | 2.89 | 878 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |46.00 |47.92 | 1.92 | 788 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
|SGD-060 | 700349 | 4502851 | 645 |88.50 | 44 |-60 | 8.76 |23.45 | 14.69 | 303 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |25.25 |32.62 | 7.37 | 948 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |37.18 |52.88 | 15.70 | 857 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |54.75 |58.00 | 3.25 | 580 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |69.06 |73.95 | 4.89 | 561 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |76.22 |79.89 | 3.67 |1,199 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
|SGD-061 | 700172 | 4502884 | 653 |51.25 | 224 |-60 |12.01 |19.23 | 7.13 |1,285 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |26.45 | 29 | 2.55 | 371 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
|SGD-062 | 700172 | 4502884 | 653 |68.00 | 0 |-90 | 7.98 |10.06 | 2.08 | 475 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |13.15 |14.80 | 1.65 |1,137 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |20.89 |23.16 | 2.27 | 721 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |53.05 |55.19 | 2.14 | 899 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
|SGD-063 | 700172 | 4502884 | 653 |70.25 | 44 |-60 |22.06 |25.63 | 3.57 | 398 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |28.39 |31.43 | 3.04 | 456 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
| | | | | | | |44.23 |50.28 | 6.05 | 495 |
+---------+---------+----------+-----------+-------+---------+-----+-------+-------+----------+-------+
Notes
The uranium grades reported in this release are annotated with a sub-prefix "e"
because they have been reported as uranium equivalent grades derived from
down-hole gamma ray logging results and so they should be regarded as
approximations only.
The Berkeley drill holes were logged with a GeoVista total count gamma tool. The
gamma tool was calibrated in Adelaide at the Department of Water, Land and
Biodiversity Conservation in calibration pits constructed under the supervision
of CSIRO. The various calibration factors were calculated by David Wilson BSc
MSc MAusIMM from 3D Exploration Ltd based in Perth, Western Australia.
Drill hole co-ordinates are in UTM 29 ED 50 Datum grid and have been surveyed
using a DGPS.
Drill intersections are calculated using a 200 ppm eU3O8 lower cut-off with a
minimum 1 metre intersection.
As a check on the down-hole gamma logging data, hand held scintillometer
readings were taken along the mineralised sections of the core. These showed
good correlation with the down-hole gamma readings and were used to identify
sections which may have been affected by radon. The down-hole gamma results
also confirmed visual observations of significant uranium mineralisation in all
of the holes.
A full version of this announcement including images can be downloaded from
Berkeley's website at www.berkeleyresources.com.au.
This information is provided by RNS
The company news service from the London Stock Exchange
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