Quarterly Report
Berkeley Resources Limited
31 January 2008
BERKELEY RESOURCES LIMITED
QUARTERLY ACTIVITIES REPORT
For the Quarter Ended
31 December 2007
KEY DEVELOPMENTS
• Calculation of a revised JORC total inferred and indicated resource
for the Salamanca I project of 16.9m lb of U3O8 at an average grade of 563ppm -
an increase of 42%.
• An initial indicated resource at Retortillo of 4.8m lb of U3O8 at
581ppm included in the above.
• Drilling subsequent to the JORC resource calculation has extended the
known mineralisation at Santidad a further 800m in total.
• An airborne geophysical survey was completed over key target areas,
with favourable initial indications.
• AMC Consultants commenced a Scoping Study on the potential for mining
at the Salamanca I project.
• Sipa Resources completed further drilling at the Miriam-Bouchers
project near Coolgardie.
Enquiries - Managing Director: Matt Syme Telephone: +61 417 906 717
Email: info@berkeleyresources.com.au
Salamanca I
Berkeley's drilling objectives in the December quarter were to generate
sufficient data to allow calculation of a revised resource for the Retortillo
deposit and an initial resource for the Santidad deposit, and also to continue
to test the potential extensions of the Retortillo-Santidad stratigraphy. Both
objectives were successfully completed and ongoing drilling continues to test
the potential for additional resources in the Salamanca I project area.
New Resource Estimates
Results from the new resource calculations were as follows:
At a 200ppm U3O8 cutoff, total inferred and indicated resources are:
Ore Tonnes Grade (ppm Contained (m lb U3O8) at
U3O8)
(Mt) 200ppm U3O8 cutoff
Retortillo 9.6 615 13.0
Santidad 3.4 382 2.9
Zona 7 0.6 760 1.0
TOTAL 13.6 563 16.9
including the following indicated resources:
Ore Tonnes Grade (ppm Contained (m lb U3O8) at
U3O8) 200ppm U3O8 cutoff
(Mt)
Retortillo 3.8 581 4.8
At a 100ppm cut-off the total inferred and indicated resources are:
Ore Tonnes Grade (ppm Contained (m lb U3O8) at
U3O8) 100ppm U3O8 cutoff
(Mt)
Retortillo 15.6 432 14.9
Santidad 6.7 255 3.8
Zona 7* 0.6 760 1.0
TOTAL 22.9 389 19.6
* Zona 7 resources have been calculated at a 200ppm cut-off only.
including the following indicated resources:
Ore Tonnes Grade (ppm Contained (m lb U3O8) at
(Mt) U3O8) 100ppm U3O8 cutoff
Retortillo 5.7 431 5.4
Note - for comparative purposes - previously published resource targets at
Salamanca 1 (based on historic ENUSA estimates) included an additional 590,000
pounds of U3O8 in 3 small deposits which are excluded from the above
calculations because detailed work has not yet commenced.
These estimates are based on data from historical drilling campaigns by the
Junta de Energia Nuclear (JEN) and Empresa Nacional Uranio S.A. (ENUSA) in the
period from the late 1950's to the mid 1980's at Retortillo and Zona 7,
supplemented by Berkeley drilling of 72 diamond and RC holes at Retortillo, 87
RC and diamond holes at Santidad and 7 diamond holes at Zona 7. They have been
developed by a team of in-house and consulting geoscientists with calculations
based on block modeling methods (for Retortillo and Santidad) and the polygonal
method (for Zona 7).
Full details of the new resource calculation are included in the announcement
dated 19 November 2007.
Drilling Results
Drilling in the quarter comprised:
• Retortillo - 12 diamond drill holes holes totalling 1167.9m
• Santidad - 13 diamond drill holes totalling 948.4m and 70 reverse
circulation drill holes totalling 4041.0m
Full details of the drilling are set out in the Appendix. Notable intersections
(at a cut-off grade of 200ppm U3O8) include:
Retortillo
RTO-067 3.0m @ 0.046% U3O8 from 33.0m
and 6.0m @ 0.058% U3O8 from 45.0m
RTO-068 5.0m @ 0.038% U3O8 from 46.0m
and 13.0m @ 0.050% U3O8 from 68.0m
RTO-069 18.0m @ 0.069% U3O8 from 32.0m
RTO-070 43.0m @ 0.024% U3O8 from 39.0m
RTO-072 10.0m @ 0.086% U3O8 from 28.0m
and 3.0m @ 0.044% U3O8 from 45.0m
RTO-075 3.0m @ 0.060% U3O8 from 40.0m.
Santidad
SANR-047 11.0m @ 0.031% U3O8 from 24.0m
SANR-052 9.0m @ 0.066% U3O8 from 14.0m
and 5.0m @ 0.036% U3O8 from 33.0m
SANR-059 13.0m @ 0.035% U3O8 from 33.0m
SANR-071 14.0m @ 0.048% U3O8 from 3.0m
and 6.0m @ 0.037% U3O8 from 31.0m
SANR-077 24.0m @ 0.026% U3O8 from 15.0m
and 7.0m @ 0.029% U3O8 from 49.0m
SANR-081 16.0m @ 0.020% U3O8 from 10.0m
SAN-089 6.0m @ 0.070% U3O8 from 16.0m
SANR-102 10.0m @ 0.076% U3O8 from 9.0m
SANR-125 9.0m @ 0.037% U3O8 from 14.0m
SANR-130 10.0m @ 0.076% U3O8 from 3.0m
and 3.0m @ 0.024% U3O8 from 21.0m.
Subsequent to the calculation of the revised JORC inferred resource on 19
November 2007, ongoing drilling extended the known limits of the Santidad
mineralisation by approximately 550m to the North West and 250m to the South
East.
The Santidad mineralisation remains open along strike in both directions.
Drilling in the March quarter is aimed at testing for extensions to the North
West and also in the area immediately North of the Santidad deposit where two
positive holes were drilled in the September quarter and where a potential
parallel structure is interpreted. Land access is limited to the South East for
the time being due to quarantine issues with a cattle herd.
Drilling at Retortillo was focussed on upgrading resources and increasing
confidence in the geological, structural and mineralogical interpretations for
the new resource estimate.
The Santidad mineralisation occurs in the same sequence of greenschist facies
metamorphosed slates and shales as the Retortillo mineralisation. The Santidad
mineralisation is generally of a weaker tenor than that at Retortillo, probably
due to the lack of Tertiary cover and the eroded topography. These features
cause the Santidad mineralisation to be at exposed at the surface and to be
generally at shallow depth with low strip ratios.
The Retortillo diamond drilling and petrological studies on the resultant core
have led to a better understanding of the Retortillo mineralisation. Preliminary
interpretations of the petrology into a predictive geological model show the
uranium mineralisation is related to the weathering process with
cordierite-biotite-pyrrhotite being converted to pinnate-kaolinite-pyrite. This
process is affected by the presence or absence of Tertiary cover and may explain
the lower tenor of the Santidad mineralisation, relative to Retortillo.
The geological logging and petrology has also show the mineralisation to be
dominantly controlled by the host lithologies and the degree of the weathering
process. Continuing petrological work on these aspects will help to prioritise
drill targets as determined from the airborne surveys and geological
investigations.
AIRBORNE GEOPHYSICAL SURVEY
Aretech Solutions completed flying a 5,924 line kilometre, low level,
close-spaced airborne magnetic and radiometric survey in the quarter. The survey
covered Salamanca I, part of the Salamanca II, and the Caceres VI and Toledo II
areas.
The survey had two objectives:
1. to better define controlling structures and host lithologies associated
with uranium mineralisation; and
2. to provide direct and indirect criteria for targeting new areas with
potential for mineralisation, particularly in areas of partial or complete
cover.
Initial indications are that the survey has provided very good data for both
objectives. Compilation, processing and interpretation of data is ongoing and is
expected to be completed in coming weeks.
SALAMANCA REGIONAL TENEMENTS
A number of additional exploration permits were applied for in the quarter -
collectively known as the 'Salamanca Regional' project. This project comprises a
number of regional scale exploration permits with the potential for similar
lithologies to Santidad and Retortillo, including
• potential extensions of the Retortillo-Santidad stratigraphy itself;
• potential areas of similar carbonaceous shale stratigraphy, including
beneath Tertiary cover; and
• areas of contact between carbonaceous shales and granites.
It is understood that little or no uranium exploration work has been undertaken
on most of the Salamanca Regional tenements. A review for any available
historical data is presently underway.
SALAMANCA I SCOPING STUDY
The successful increase in the resource base at Salamanca I, along with the
outstanding potential for additional resources, gave the Company impetus to
commence a scoping study on the potential for mining at Salamanca I. AMC
Consultants were engaged to prepare the study and substantial progress was made
in the quarter.
AMC expect to complete the study in early February.
COOLGARDIE GOLD PROJECT
(Sipa Resources Ltd earning 70% from Berkeley)
Eight Reverse Circulation holes for 858 metres were drilled at two Prospects at
Coolgardie in December.
Six holes on six sections were drilled at the Forest Gold Prospect adjacent to
the Burbanks Shear Zone to follow-up previous Sipa RAB intersections such as 10
metres at 2.5 g/t gold. A best result of 5 metres grading 8 g/t gold was
returned. Whilst all other holes returned zones of anomalous gold, no other
potentially ore-grade intercepts resulted, including from holes 50 metres north
and south along strike of the best result.
Two holes were drilled into a significant northerly trending soil anomaly 1.5
kilometres long known as the Comet Shear Prospect, located 5 kilometres
northwest of the Forest Gold Prospect. These holes were drilled scissored
towards each other. The hole drilled to the west returned 50 metres grading 0.2
g/t from 20 metres, whilst the hole drilled to the east (and probably down dip)
returned 83 metres at 0.3 g/t from 25 metres. Results are being evaluated and
more drilling may be required.
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.
APPENDIX A - Drill results for December quarter
Santidad Drilling and Assay Summary (31.12.07)
HOLE ID UTM UTM North RL Inclination End of Minimum Intersections > 200ppm U3O8
East Hole
FROM TO M %
SAN-043 716,535 4,522,807 753.044 -60 59.90 3.00 4.00 1.00 0.0236
SAN-044 716,503 4,522,751 762.023 -60 70.00 No significant
mineralisation
SAN-045 716,480 4,522,709 769.894 -60 55.45 15 23 8 0.035
33 34 1 0.026
SAN-046 716,457 4,522,665 778.552 -60 56.70 32 36 4 0.039
SANR-047 716,807 4,522,437 771.189 -90 60.00 24.00 35.00 11.00 0.0306
SANR-048 716,891 4,522,606 756.408 -90 49.00 Not Sampled
SANR-049 716,873 4,522,571 759.828 -90 50.00 Not Sampled
SANR-050 716,780 4,522,616 752.113 -90 50.00 Not Sampled
SANR-051 716,715 4,522,704 752.366 -90 50.00 Not Sampled
SANR-052 716,385 4,522,821 764.067 -90 50.00 7.00 8.00 1.00 0.0230
14.00 23.00 9.00 0.0660
28.00 29.00 1.00 0.0230
33.00 38.00 5.00 0.0360
40.00 41.00 1.00 0.0310
46.00 47.00 1.00 0.0250
SANR-053 716,404 4,522,875 756.361 -90 50.00 9.00 11.00 2.00 0.0538
SANR-054 716,432 4,522,913 753.921 -90 50.00 Not Sampled
SANR-055 716,151 4,522,943 763.648 -90 50.00 Not Sampled
SANR-056 716,177 4,522,984 758.133 -90 50.00 Not Sampled
SANR-057 716,332 4,522,726 783.321 -90 50.00 Not Sampled
SANR-058 716,347 4,522,779 772.324 -90 50.00 Not Sampled
SANR-059 716,601 4,522,478 786.337 -90 70.00 33.00 46.00 13.00 0.0353
SANR-060 716,852 4,523,084 724.019 -90 50.00 3.00 4.00 1.00 0.0381
SAN-061 716,534 4,522,704 762.468 -90 61.00 7.00 8.00 1.00 0.0277
12.00 13.00 1.00 0.0212
14.00 15.00 1.00 0.0275
18.00 20.00 2.00 0.0564
22.00 24.00 2.00 0.0682
27.00 29.00 2.00 0.0279
36.00 37.00 1.00 0.0587
SANR-062 716,032 4,522,945 758.181 -90 60.00 7.00 8.00 1.00 0.0230
SANR-063 716,085 4,523,030 748.174 -90 51.00 27.00 28.00 1.00 0.0230
SANR-064 716,065 4,522,994 751.326 -90 69.00 42.50 44.50 2.00 0.0330
SANR-065 716,111 4,523,079 747.346 -90 50.00 Not Sampled
SANR-066 716,123 4,523,124 743.157 -90 50.00 Not Sampled
SANR-067 716,156 4,523,165 740.104 -90 50.00 Not Sampled
SANR-068 716,244 4,523,119 743.56 -90 50.00 Not Sampled
SANR-069 716,223 4,523,073 748.839 -90 45.00 Not Sampled
SANR-070 716,191 4,523,028 753.491 -90 50.00 Not Sampled
SANR-071 715,857 4,523,286 738.937 -90 57.00 3.00 17.00 14.00 0.0480
20.00 22.00 2.00 0.0310
24.00 25.00 1.00 0.0300
27.00 29.00 2.00 0.0340
31.00 37.00 6.00 0.0370
SANR-072 715,835 4,523,245 738.11 -90 50.00 No significant
mineralisation
SANR-073 715,880 4,523,330 738.504 -90 60.00 19.00 20.00 1.00 0.0210
21.00 22.00 1.00 0.0210
48.00 49.00 1.00 0.0270
SANR-074 715,905 4,523,373 739.09 -90 50.00 Not Sampled
SANR-075 715,784 4,523,160 743.404 -90 50.00 3.00 4.00 1.00 0.0240
5.00 6.00 1.00 0.0210
SANR-076 715,808 4,523,200 740.36 -90 60.00 34.00 37.00 3.00 0.0210
38.00 39.00 1.00 0.0210
43.00 44.00 1.00 0.0250
48.00 51.00 3.00 0.0260
SANR-077 715,753 4,523,370 752.831 -90 75.00 15.00 39.00 24.00 0.0260
49.00 56.00 7.00 0.0290
SANR-078 715,741 4,523,325 755.282 -90 45.00 Not Sampled
SANR-079 716,007 4,523,072 735.036 -90 50.00 Not Sampled
SANR-080 715,962 4,522,992 743.486 -90 50.00 No significant
mineralisation
SANR-081 716,502 4,522,750 762.184 -90 48.00 10.00 26.00 16.00 0.0200
35.00 37.00 2.00 0.0200
SANR-082 716,761 4,522,393 778.73 -90 80.00 46.00 47.00 1.00 0.0220
51.00 53.00 2.00 0.0220
SANR-083 716,753 4,522,336 782.966 -90 60.00 Not Sampled
SANR-084 716,893 4,522,192 771.129 -90 50.00 Not Sampled
SANR-085 716,934 4,522,250 764.115 -90 50.00 Not Sampled
SANR-086 716,965 4,522,341 751.916 -90 51.00 Not Sampled
SANR-087 716,950 4,522,288 758.178 -90 50.00 Not Sampled
SANR-088 717,004 4,522,377 749.566 -90 60.00 No significant
mineralisation
SAN-089 716,688 4,522,550 767.259 -90 75.45 16.00 22.00 6.00 0.0697
SANR-090 717,144 4,522,253 752.148 -90 54.00 Not Sampled
SAN-091 716,657 4,522,508 775.365 -90 75.20 41.00 42.00 1.00 0.0206
SANR-092 716,679 4,522,439 781.027 -90 80.00 No significant
mineralisation
SANR-093 716,904 4,522,433 759.623 -90 57.00 3.00 6.00 3.00 0.0210
SANR-094 716,880 4,522,392 758.691 -90 57.00 Not Sampled
SANR-095 716,925 4,522,481 767.32 -90 60.00 Not Sampled
SAN-096 716,705 4,522,590 761.535 -90 74.80 Not Sampled
SANR-097 717,012 4,522,442 754.492 -90 60.00 Not Sampled
SANR-098 716,865 4,522,325 768.433 -90 60.00 No significant
mineralisation
SANR-099 716,830 4,522,290 775.094 -90 60.00 Not Sampled
SANR-100 717,163 4,522,297 746.64 -90 60.00 Not Sampled
SANR-101 717,120 4,522,195 758.768 -90 60.00 Not Sampled
SANR-102 717,095 4,522,164 764.175 -90 60.00 9.00 19.00 10.00 0.0755
SANR-103 717,067 4,522,122 766.748 -90 60.00 No significant
mineralisation
SANR-104 717,047 4,522,072 770.238 -90 60.00 Not Sampled
SANR-105 717,317 4,522,145 768.429 -90 60.00 Not Sampled
SANR-106 717,293 4,522,112 769.147 -90 60.00 Not Sampled
SAN-107 716,726 4,522,632 758.507 -90 66.30 13.00 14.00 1.00 0.0200
23.00 24.00 1.00 0.0238
SANR-108 717,189 4,522,110 770.678 -90 60.00 33.00 34.00 1.00 0.0373
37.00 38.00 1.00 0.0371
54.00 55.00 1.00 0.0364
SANR-109 717,215 4,522,152 766.752 -90 69.00 Not Sampled
SANR-110 717,165 4,522,067 770.752 -90 75.00 24.00 26.00 2.00 0.0303
SANR-111 717,230 4,522,195 759.747 -90 60.00 Not Sampled
SANR-112 717,054 4,522,295 748.102 -90 54.00 14.00 15.00 1.00 0.0206
SAN-113 716,750 4,522,678 750.985 -90 74.70 Not Sampled
SANR-114 717,032 4,522,245 754.324 -90 60.00 5.00 7.00 2.00 0.0218
8.00 9.00 1.00 0.0210
SAN-115 716,642 4,522,462 784.137 -90 76.90 Not Sampled
SANR-116 717,061 4,522,327 744.838 -90 54.00 Not Sampled
SANR-117 717,091 4,522,383 743 -90 55.00 Not Sampled
SANR-118 717,015 4,522,206 757 -90 59.00 No significant
mineralisation
SANR-119 716,981 4,522,160 761 -90 60.00 No significant
mineralisation
SAN-120 717,130 4,522,150 764 -60 81.40 Not Sampled
SANR-121 716,564 4,522,439 788 -90 87.00 Not Sampled
SANR-122 715,648 4,523,599 751 -90 59.00 Not Sampled
SANR-123 715,625 4,523,556 756 -90 60.00 11.00 12.00 1.00 0.0320
17.00 19.00 2.00 0.0210
SANR-124 715,596 4,523,506 762 -90 69.00 Not Sampled
SANR-125 715,585 4,523,463 770 -90 60.00 14.00 23.00 9.00 0.0370
29.00 30.00 1.00 0.0220
SAN-126 716,624 4,522,646 763 -60 84.60 Awaiting Assays
SANR-127 715,550 4,523,416 778 -90 60.00 48.00 50.00 2.00 0.1690
SAN-128 716,771 4,522,523 763 -60 81.35 Not Sampled
SANR-129 715,769 4,523,413 752 -90 60.00 Not Sampled
SANR-130 715,615 4,523,551 756 -90 30.00 3.00 13.00 10.00 0.0760
14.00 15.00 1.00 0.0210
21.00 24.00 3.00 0.0240
SANR-131 715,798 4,523,450 750 -90 62.00 37.00 38.00 1.00 0.0220
SANR-132 715,398 4,523,554 782 -90 60.00 Not Sampled
SANR-133 715,418 4,523,603 776 -90 60.00 Not Sampled
SANR-134 715,440 4,523,650 769 -90 52.00 Not Sampled
SANR-135 715,463 4,523,691 762 -90 40.00 Not Sampled
SANR-136 715,249 4,523,687 789 -90 60.00 Awaiting Assays
SANR-137 715,283 4,523,727 781 -90 55.00 Not Sampled
SAN-138 715,846 4,523,285 739 -90 84.55 Awaiting Assays
SANR-139 715,300 4,523,775 774 -90 62.00 Awaiting Assays
SANR-140 715,661 4,523,371 767 -90 60.00 Awaiting Assays
SANR-141 715,678 4,523,412 762 -90 60.00 Awaiting Assays
Retortillo Drilling and Assay Summary (31.12.07)
HOLE ID UTM East UTM North RL Inclination End of Minimum Intersections > 200ppm
Hole U3O8
RTO-064 720,139.652 4,519,883.908 741.945 -90 79.50 41.50 44.50 3.00 0.0260
RTO-065 720,220.074 4,519,842.163 740.263 -90 98.20 Not Sampled
RTO-066 719,754.591 4,520,345.004 731.621 -60 93.00 Not Sampled
RTO-067 720,050.696 4,519,927.986 741.746 -90 80.00 33.00 36.00 3.00 0.0460
45.00 51.00 6.00 0.0580
RTO-068 719,445.021 4,520,541.961 746.567 -60 119.15 46.00 51.00 5.00 0.0380
68.00 81.00 13.00 0.0498
RTO-069 720,009.677 4,519,952.072 743.474 -90 93.20 32.00 50.00 18.00 0.0690
RTO-070 720,050.907 4,519,815.984 748.271 -90 96.30 39.00 82.00 43.00 0.0240
RTO-071 719,882.643 4,520,240.221 742.883 -60 110.40 Not Sampled
RTO-072 719,457.880 4,520,408.368 751.575 -90 101.50 25.00 26.00 1.00 0.0776
28.00 38.00 10.00 0.0859
40.00 42.00 2.00 0.0382
43.00 44.00 1.00 0.0712
45.00 48.00 3.00 0.0442
50.00 51.00 1.00 0.0448
53.00 55.00 2.00 0.0443
RTO-073 719,369.405 4,520,343.385 750.572 -90 95.30 No significant
mineralisation
RTO-074 720,319.199 4,519,678.652 747.248 -90 101.30 48.00 49.00 1.00 0.0630
56.00 58.00 2.00 0.0293
78.00 79.00 1.00 0.0303
RTO-075 720,425.228 4,519,671.746 748.135 -90 100.00 40.00 43.00 3.00 0.0600
45.00 46.00 1.00 0.0231
This information is provided by RNS
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