Activities report
2008年4月30日 - 5:25PM
ＲＮＳを含む英国規制内ニュース （英語）
RNS Number:4132T
Berkeley Resources Limited
30 April 2008
Quarterly Activities Report
For the Quarter Ended
31 March 2008
Key Developments
* A scoping study prepared by AMC Consultants confirmed the potential for
mining at Salamanca I, forecasting 12.1m lb of U3O8 production over 10 years at
a cash cost of US$25/lb.
* Interpreted results for the aerial survey completed over the Salamanca
I, Salamanca II and Caceres VI areas in the December quarter highlighted the
exploration potential of these tenements and generated a significant number
of strong anomalies.
* Drilling at the enlarged Zona 7 anomaly within Salamanca I extended the
strike of mineralisation to over 1.5km and will result in significant
additional resources.
* Wide-spaced drilling at Santidad, confirmed that the mineralised zone
extends for another 3.5km to the north-west of the Santidad deposit.
* Results from initial ground work and historic data reviews at the Mina
Cristina project indicate strong potential for more extensive uranium
mineralisation.
* Initial drilling results at the Gambuta project showed extensive,
shallow uranium mineralisation.
* Initial drilling at Barquilla (Salamanca II Project) encounters near
surface mineralisation in a number of holes.
Enquiries - Managing Director: Matt Syme Telephone: +61 417 906 717
Email: info@berkeleyresources.com.au
RBC Capital Markets Martin Eales Telephone +44 20 7029 7881
Scoping Study
A Scoping Study, prepared by AMC Consultants, was completed in February,
confirming the potential economic viability of mining at the Salamanca I
project.
The Study, which is based only upon the project's previously announced JORC
inferred and indicated resources of 16.9m lb of U3O8, includes the following
conclusions:
* Potential production of approximately 12.1m lb U3O8 over 10 years.
* Average cash operating costs of US$25 per lb of U3O8
* Initial capital costs totalling US$109m for a plant rated to process
1.5mtpa. The plant design has been scaled to allow for potential future
additional resources
* Legal review confirms no impediments to mining
* Environmental review confirms no foreseeable major impediments to mining
* Good potential to improve financial and operating parameters in a
number of areas, including utilising truck or radiometric sorting
The details of further testwork, including radiometric sorting, crushing and
comminution studies are being finalised. Completion of this work, and the
resultant outcomes, will determine planning for a feasibility study.
See the announcement dated 14 February 2008 for further details.
EXPLORATION
Salamanca I
A helicopter-borne survey was flown over the Salamanca I area in December 2007,
with results processed and interpreted in January 2008 (see announcement dated 5
February 2008).
The area flown includes the Retortillo, Santidad and Zona 7 uranium deposits and
also the Mina Caridad and Mina Cristina areas, where previous trial uranium
mining by Spanish government entities was undertaken. The survey was limited to
target lithologies with potential for hosting economic mineralisation.
The strong radiometric anomalies associated with the Retortillo, Santidad and
Zona 7 uranium deposits, and also the historic Cristina and Caridad mines,
extend well beyond previously known mineralisation. A program of initial testing
of the extended Zona 7 anomaly and the Cristina and Caridad anomalies was
commenced with 30 reverse circulation ("RC") holes totalling 670m completed at
Zona 7 during the quarter.
Zona 7
The main radiometric anomaly at Zona 7 is approximately 2.5km long and up to
500m wide. Berkeley drilled 7 diamond holes in the area in 2007 to confirm the
results of 71 diamond drill holes drilled by government entities (JEN) in the
1960's. Results from the previous Berkeley holes included:
Hole Z7-001 8.5metres @ 0.284% U3O8 from 0.0m
Hole Z7-007 8.95metres @ 0.063% U3O8 from 2.0m and
9.5metres @ 0.183% U3O8 from 14.8m
A small (1m lb) resource was previously calculated around hole Z7-001, based on
this hole and historical results.
Drilling in the quarter extended the strike length of the mineralisation to
approximately 1.5km. It remains open to the north and south-west.
Notable RC intersections (at an assay cut off grade of 200ppm U3O8) include:
Hole ZN7R-010 3.0 metres @ 0.117% U3O8 from 16.0m
Hole ZN7R-019 1.0 metre @ 0.080% U3O8 from 6.0m
1.0 metre @ 0.034% U3O8 from 12.0m
1.0 metre @ 0.079% U3O8 from 25.0m and
2.0 metres @ 0.038% U3O8 from 37.0.0m
Hole ZN7R-022 2.0 metres @ 0.063% U3O8 from 14.0m
1.0 metre @ 0.046% U3O8 from 24.0m
3.0 metres @ 0.071% U3O8 from 25.0m
Hole ZN7R-023 2.0 metres @ 0.081% U3O8 from 23.0m
Hole ZN7R-026 3.0 metres @ 0.084% U3O8 from 15.0m
11.0 metres @ 0.049% U3O8 from 23.0m
11.0 metres @ 0.066% U3O8 from 40.0m
Hole ZN7R-027 1.0 metres @ 0.041% U3O8 from 39.0m
3.0 metres @ 0.030% U3O8 from 49.0m
Hole ZN7R-030 2.0 metres @ 0.037% U3O8 from 47.0m
The mineralised host rock is a thermally altered package of Pre-Cambrian to
Cambrian meta-sediments. A group of muddy shales with thick conglomerates /
quartz pebble horizons form the southern footwall to the mineralised sequence.
Similar stratigraphy has been identified at both Caridad, 2.5km to the
southeast, and at Cristina, 2km to the northeast. Work is continuing to
determine the stratigraphic relationships between these three areas,
particularly in relation to the possible continuity of both stratigraphy and
radiometric anomalies between Zona 7 and Cristina.
Geological mapping indicates that the Zona 7 eastern limb is parallel to the
main S1 cleavage, whilst the western arm appears to be coincident with a
re-orientation of the S1 cleavage in to a more NNE-SSW orientation. The nature
of this re-orientation is likely to be due to late Hercynian adjustments,
through folding, faulting, or Alpine tectonics.
The initial results from Zona 7 suggest irregular distribution of structurally
controlled veins and pods of high grade mineralisation. However, the principal
structural controls are not yet understood. Potential northern extensions of the
mineralisation will be tested in the next quarter.
The radiometric anomaly at Zona 7 appears to be part of a larger northeast
trending regional anomaly which parallels the granite contact to the west.
Topographic modelling indicates a strong relationship between the distribution
and nature of these anomalies and topography, particularly between Zona 7 and
Cristina. This relationship has been previously recognised at Retortillo, and
therefore similar geological processes of mineralisation are indicated. A strong
radiometric anomaly extends over approximately 4kms from Zona 7 to Cristina and
historic data (diamond and percussion drilling, trenching and a small shaft),
and outcrop indicate widespread, near surface mineralisation within the Cristina
anomaly. Drilling will commence shortly.
Santidad
Drilling at Santidad comprised 59 reverse circulation holes totalling 3,679.9 m
and 7 diamond drill holes totalling 537.6m.
This drilling was designed to test for:
1. potential extensions of the Santidad stratigraphy beneath tertiary
cover to the north-west of the Santidad deposit (see aerial survey announcement
dated 5 February 2008), and
2. a potential parallel structure to the north of the Santidad deposit,
indicated by previous positive drill results and the aeromagnetic and
radiometric survey.
Two lines of reverse circulation drillholes, 2.4 km apart (profiles 166E and
262E), were drilled to test the full width of the Santidad stratigraphy.
Notable intersections (at an assay cut off grade of 200ppm U3O8) include:
Hole SAN-144 1.0 metre @ 0.056% U3O8 from 30.0m
2.0 metres @ 0.051% U3O8 from 34.0m
1.0 metre @ 0.074% U3O8 from 51.5m and
5.0 metres @ 0.039% U3O8 from 59.0m
Hole SAN-156 10.7 metres @ 0.034% U3O8 from 13m
3.3 metres @ 0.056% U3O8 from 26.0m and
5.6 metres @ 0.036% U3O8 from 30.5m
Hole SAN-167 6.1 metres @ 0.034% U3O8 from 18.9m
7.8 metre @ 0.062% U3O8 from 59.2m
Hole SANR-192 2.0 metres @ 0.063% U3O8 from 38.0m
1.0 metre @ 0.068% U3O8 from 58.0m
While results seem to have limited the potential of the northern radiometric
target (-262E), mineralisation of similar grade to the Santidad inferred
resource (382ppm U3O8 at a cut off grade of 200ppm U3O8) has been recorded in
several holes up to 3.5km from the main Santidad orebody (Hole SANR-192 on
Profile 262E), emphasizing the extent of the mineralized system.
Having confirmed continuity of the Santidad stratigraphy and mineralisation to
almost the western granite contact, further drilling is required to test the
2.4km gap between profiles -166E and -262E.
Salamanca II
Berkeley also completed interpretation of a 1,122 line kilometre helicopter
survey over the main areas of the Company's Salamanca II project. This area lies
between and around a number of uranium State Reserves (not the property of the
Company) which include the Fe Mine area, and the Alameda and Esperanza deposits.
Seven diamond drill holes totalling 331.2m were drilled in the Barquilla license
to test a number of radiometric anomalies.
Notable intersections (at an assay cut off grade of 200ppm U3O8) include:
Hole BAR 002 5.3 metres @ 0.095% U3O8 from 2.5m
Hole BAR 003 2.0 metres @ 0.023%U3O8 from 1.0m
Hole BAR 005 4.0 metres @ 0.038%U3O8 from 0.0m
Mineralisation comprises surface accumulations above the redox zone within a
thin zone of clay and weathered rock derived from the insitu weathering of the
underlying basement. Uranium concentrations have a strong association with iron
oxides developed in fractures in the oxide zone and the potential for a
significant resource from this style of mineralisation is considered low.
Further mapping and the use of other geophysical technologies is now required to
assist in defining new exploration targets for larger areas of structurally
controlled mineralisation, similar to that at the Mine Fe mine, to the
southeast.
Caceres VI Project
Diamond and Reverse Circulation drill testing of historic prospects and new
radiometric anomalies at the Gambuta and Ojaranzo projects commenced and will
continue until the end of May 2008, when fire restrictions will preclude access.
Gambuta
Four diamond drill holes totalling 314.3m were completed within a north east
trending area of Precambrian phyllites measuring 900m by 400m, to clarify
results from roto-percussion drilling undertaken by CISA (a joint venture
between COGEMA (now Areva) and ENUSA) in the 1990's.
All four holes intersected significant near surface uranium mineralisation, and
notable intersections (at an assay cut off grade of 200ppm U3O8) include:
Hole GAM 001 8.0 metres @ 0.059% U3O8 from surface
Hole GAM 002 12.5 metres @ 0.074% U3O8 from surface, and
4.0 metres @ 0.100% U3O8 from 28.0m
Hole GAM 003 3.0 metres @ 0.028% U3O8 from 8.0m
4.0 metres @ 0.036% U3O8 from 12.0m
3.2 metres @ 0.054% U3O8 from 25.0m, and
6.5 metres @ 0.056% U3O8 from 29.5m
Hole GAM 004 17.7metres @ 0.029% U3O8 from 11.5m, including
7.0 metres @ 0.043% U3O8 from 14.5m
These very encouraging results confirm the presence of extensive near surface
uranium mineralisation, at potentially economic grades, and validate the down
hole radiometric information available for the 21 positive holes drilled by CISA
(out of a total of 24 holes drilled) in the early 1990's.
Within the target area, previously untested zones contain a high potential for
the discovery of "blind" mineralisation beneath Tertiary cover, both within the
drilled area and along strike to the northwest where the deposit remains open.
Three styles of mineralisation have been recognised:
1. High level secondary mineralisation located in the oxide zone, often in
fractures.
2. Quartz sulphide mineralisation below the redox zone, within structures
and possible shear zones.
3. As "disseminations" within the phyllite package.
A reverse circulation drilling program to test for mineralisation beneath the
Tertiary cover and to better define the extent and tenor of the known
mineralisation commenced in April, 2008.
Ojaranzo Prospect
A short program of diamond drilling to confirm positive historical results for
the Ojaranzo prospect commenced in April. Ground radiometrics and geological
mapping have confirmed the radiometric anomalies generated by the aerial survey
and located secondary uranium minerals within the Precambrian phyllites.
The information in this report that relates to Exploration Results, Mineral Resources or Ore Reserves is based on
information compiled by Mr Peter Ellis, who is a Member of The Australian Institute of Geoscientists and an employee of
Berkeley Resources Limited. Mr Ellis has sufficient experience which is relevant to the style of mineralisation and
type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as
defined in the 2004 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore
Reserves'. Mr Ellis consents to the inclusion in the report of the matters based on his information in the form and
context in which it appears.
Positive Results from Zona 7 Drilling (31.03.08)
HOLE ID UTM UTM North RL Inclination End of Minimum Intersections >
East Hole 200ppm U3O8
metres metres metres Degrees metres From To Int U3O8 (%)
(m)
Z7-001 714962 4528727 728 -90 100.20 0.00 8.50 8.50 0.2841
Z7-002 715555 4528530 718 -90 84.65 31.10 32.10 1.00 0.0242
Z7-004 714860 4528709 733 -90 49.15 7.20 8.60 1.40 0.0421
10.65 11.90 1.25 0.0284
Z7-005 715043 4528750 725 -90 60.10 4.11 5.65 1.54 0.0338
10.60 12.00 1.40 0.0285
Z7-007 715432 4528570 724 -90 61.10 2.00 10.95 8.95 0.0630
14.85 24.40 9.45 0.1830
ZN7R-010 715470 4528514 719 -90 70.0 16.00 19.00 3.00 0.1174
ZN7R-019 714698 4528500 718 -90 56.0 6.00 7.00 1.00 0.0801
12.00 13.00 1.00 0.0345
25.00 26.00 1.00 0.0790
37.00 39.00 2.00 0.0386
ZN7R-020 714745 4528477 722 -90 50.0 17.00 20.00 3.00 0.0268
21.00 23.00 2.00 0.0395
ZN7R-021 714656 4528524 716 -90 50.0 35.00 36.00 1.00 0.0309
42.00 43.00 1.00 0.0360
ZN7R-022 714786 4528450 726 -90 50.0 14.00 16.00 2.00 0.0636
23.00 24.00 1.00 0.0465
25.00 28.00 3.00 0.0709
ZN7R-023 714614 4528545 715 -90 50.0 23.00 25.00 2.00 0.0814
ZN7R-026 714431 4528303 723 -90 70.0 5.00 7.00 2.00 0.0270
12.00 13.00 1.00 0.0217
15.00 18.00 3.00 0.0836
21.00 22.00 1.00 0.0213
23.00 34.00 11.00 0.0485
23.00 30.00 7.00 0.0679
40.00 51.00 11.00 0.0664
ZN7R-027 714476 4528277 723 -90 65.0 26.00 27.00 1.00 0.0200
39.00 40.00 1.00 0.0414
43.00 44.00 1.00 0.0309
49.00 52.00 3.00 0.0300
ZN7R-028 714517 4528251 725 -90 60.0 Radiometrically Anomalous -
Awaiting Assays
ZN7R-030 714828 4528428 724 -90 65.0 3.00 4.00 1.00 0.0242
9.00 10.00 1.00 0.0200
47.00 49.00 2.00 0.0374
ZN7R-032 715181 4528749 701 -90 70.0 Radiometrically Anomalous -
Awaiting Assays
ZN7R-033 715172 4528714 704 -90 50.0 Radiometrically Anomalous -
Awaiting Assays
ZN7R-034 715153 4528661 711 -90 50.0 Radiometrically Anomalous -
Awaiting Assays
ZN7R-036 715317 4528690 697 -90 60.0 Radiometrically Anomalous -
Awaiting Assays
NOTE: All assays are by Delayed Nuetron Count by Actlabs and only results for positive holes are shown
Positive Results from Santidad Drilling (31.03.08)
HOLE ID UTM UTM North RL Inclination End of Hole Minimum Intersections > 200ppm U3O8
East
metres metres metres Degrees metres From To Int (m) U3O8 (%)
SAN-144 715757 4523364 752 -90 95.35 17.00 22.00 5.00 0.0564
24.00 27.00 3.00 0.0229
28.00 29.00 1.00 0.0251
30.00 31.00 1.00 0.0555
34.00 36.00 2.00 0.0511
51.50 52.50 1.00 0.0745
59.00 64.00 5.00 0.0392
SANR-153 714753 4524019 800 -90 60.00 56.00 57.00 1.00 0.0246
SANR-155 714706 4523942 805 -90 85.00 57.00 60.00 3.00 0.0264
SAN-156 716530 4522702 762 -90 61.15 13.00 23.65 10.65 0.0337
26.00 29.35 3.35 0.0558
30.45 36.00 5.55 0.0364
SAN-167 715910 4523244 729 -90 102.45 18.89 24.98 6.09 0.0344
59.20 67.00 7.80 0.0622
SANR-169 716273 4523379 732 -90 51.00 29.00 30.00 1.00 0.0284
SANR-170 716284 4523412 737 -90 60.00 4.00 5.00 1.00 0.0241
SANR-182 715980 4522923 762 -90 50.00 29.00 32.00 3.00 0.0267
SAN-185 715837 4523169 732 -90 100.20 54.90 56.10 1.20 0.0251
SANR-192 712859 4525593 781 -90 85.00 38.00 40.00 2.00 0.0636
58.00 59.00 1.00 0.0685
69.00 71.00 2.00 0.0462
75.00 76.00 1.00 0.0298
SANR-194 712805 4525487 785 -90 80.00 40.00 41.00 1.00 0.0237
SANR-199 712682 4525272 797 -90 70.00 60.00 61.00 1.00 0.0429
SANR-200 712660 4525230 800 -90 70.00 46.00 47.00 1.00 0.0205
NOTE: All assays are by Delayed Nuetron Count by Actlabs and only results for positive holes are shown
Positive Results from Barquilla Drilling (31.03.08)
HOLE ID UTM UTM North RL Inclination Recovery End of Minimum Intersections >
East Hole 200ppm U3O8
metres metres metres Degrees % metres From To Int U3O8 (%)
(m)
BAR-002 692,373 4,509,353 697.394 -90 90.8 50.2 2.50 7.80 5.30 0.0954
BAR-003 693,307 4,509,052 715.246 -90 93.71 60.3 1.00 3.00 2.00 0.0233
BAR-005 691,844 4,507,657 713.818 -90 95.76 54.0 0.00 4.00 4.00 0.0380
BAR-006 693,259 4,509,198 711.774 -90 97.64 51.3 2.50 3.00 0.50 0.0288
BAR-007 692,578 4,508,591 701.885 -90 92.48 25.3 Radiometrically Anomalous -
Awaiting Assays
NOTE: All assays are by Delayed Nuetron Count by Actlabs and only results for positive holes are shown
Positive Results from Gambuta Drilling (31.03.08)
HOLE ID UTM UTM North RL Inclination Recovery End of Minimum Intersections >
East Hole 200ppm U3O8
metres metres metres Degrees % metres From To Int U3O8 (%)
(m)
GAM-001 291,730 4,404,118 387 -60 to 000 97.09 103.00 0.00 8.00 8.00 0.0586
10.00 11.00 1.00 0.0218
19.00 20.00 1.00 0.0512
34.00 35.50 1.50 0.0301
37.50 38.50 1.00 0.0389
45.00 46.00 1.00 0.0768
55.00 56.00 1.00 0.0543
58.50 59.50 1.00 0.0338
GAM-002 292,381 4,403,899 369 -60 to 000 96.36% 85.00 0.00 12.50 12.50 0.0741
21.50 22.50 1.00 0.0312
24.00 25.00 1.00 0.0394
28.00 32.00 4.00 0.0997
34.50 35.50 1.00 0.0340
GAM-003 292,368 4,403,827 353 -80 to 000 85.28% 64.60 8.00 11.00 3.00 0.0281
12.00 16.00 4.00 0.0359
20.50 22.50 2.00 0.0340
23.30 24.20 1.00 0.0707
25.00 28.20 3.20 0.0540
29.50 36.00 6.50 0.0561
GAM-004 292,368 4,403,828 353 -70 to 180 97.41% 61.70 11.50 12.30 0.80 0.0218
14.50 21.50 7.00 0.0431
22.50 23.50 1.00 0.0397
24.50 25.50 1.00 0.0531
27.00 29.20 2.20 0.0256
34.00 35.00 1.00 0.0285
GAM-005 292,368 4,403,827 353 -80 to 000 98.06% 36.00 7.50 36.00 28.50 0.0451
7.50 10.50 3.00 0.0218
13.80 36.00 22.20 0.0541
NOTE: All assays are by Delayed Nuetron Count by Actlabs and only results for positive holes are shown
This information is provided by RNS
The company news service from the London Stock Exchange
END
MSCVBLBXVZBFBBD
Berkeley Energia (LSE:BKY)
過去 株価チャート
から 6 2024 まで 7 2024
Berkeley Energia (LSE:BKY)
過去 株価チャート
から 7 2023 まで 7 2024
