Drilling Results

RNS Number : 7656I
Berkeley Resources Limited
18 March 2010
 



18 March 2010

 

BERKELEY RESOURCES LIMITED

 

Final Confirmatory Drilling Results at the

Salamanca Uranium Project

 

Berkeley is pleased to announce the completion of the first phase confirmatory drilling program at the Águila and Alameda areas and to release the final results from the program at the Alameda South deposit. 

A total of 19 diamond holes (1,667m) were drilled at the Alameda South deposit, all of which intercepted their intended targets.  The thickness and grade of the intercepts continues to provide a high level of confidence in the historical drilling information upon which Berkeley has based it's exploration targets (Alameda exploration target is 25.5 - 29 million tonnes @ 450 - 500 ppm U3O8). It is anticipated that a Mineral Resource Estimate will be completed for the Alameda area by the end of the 1st Quarter.

The notable results presented in Table 1 are based on down-hole gamma logging undertaken by Berkeley and are shown as equivalent U3O8 ppm grades or eU3O8

Table 1 - Notable Drill Hole Intersections

Hole ID

From

To

Interval

eU3O8


(m)

(m)

(m)

(ppm)

ASD-001 *

3.1

6.3

3.2

5,904

ASD-002 *

3.8

51.3

47.5

2,120

ASD-003 *

6.2

33.0

26.8

495

ASD-003 *

44.2

81.0

36.8

539

ASD-005

49.6

58.1

8.5

930

ASD-005

64.4

68.3

3.9

1,168

ASD-007

51.9

56.0

4.1

1,146

ASD-008

76.3

80.2

3.9

823

ASD-011

69.3

83.5

14.2

1,606

ASD-012

54.0

61.4

7.4

1,584

ASD-015

11.3

17.1

5.8

1,110

                        * Previously announced on 22nd January, 2010

A full list of the Alameda South drilling results are included at the end of this announcement in Table 2.

 

Enquiries -       Managing Director:                 Ian Stalker       Tel:  +34 608 221 497  

                        RBC Capital Markets:            Martin Eales    Tel:  +44 20 7029 7881

 


NOTE - The Alameda deposits have been extensively explored by ENUSA but are not classed as Mineral Resources.  The quantity and grade of Berkeley's exploration targets for the Alameda deposits are conceptual in nature and based on a review of the available data on the projects to date.  As there has been insufficient exploration to estimate a Mineral Resource in accordance with the JORC Code, it is uncertain whether further exploration will result in the determination of a Mineral Resource.

 

Alameda South Deposit

The Alameda South deposit is located 12km west of the ENUSA Quercus Plant and is accessible via sealed highway and a sealed secondary road.

Uranium mineralisation at Alameda South is hosted by a deformed sequence of regionally and thermally metamorphosed fine grained sandstones and siltstones. In addition, granitic sills and shallow dipping dykes were intruded after the main folding and metamorphism events followed by the uranium mineralisation. The entire sequence has been affected by a later brittle deformation event.

Uranium mineralisation occurs in a complex network of moderately to steeply dipping brittle structures (veins, faults, fractures and along bedding contacts) as a result of a low temperature hydrothermal event.  The mineralised zones commonly have sharp boundaries, separating mineralised structures from poorly mineralised host rock.

All of the intersections correlated well in both grade and thickness with nearby vertical historical diamond drill holes. 

 

Data Verification

120 half metre full core samples from holes ASD-001 and ASD-002 were sent to ALS-Chemex in Vancouver for chemical analysis (XRF) to compare with the e-grade calculations. The gamma and the assay results compare well.  There is not an exact match due to the fact that the radiometric log measures a volume that can be up to 50 times larger than a typical drill core and thus gives a more representative sample.

 

 

 

 

 

A full version of this announcement including images can be downloaded from Berkeley's website at www.berkeleyresources.com.au.



Table 2 - Alameda South Drill Hole Intersections

Hole ID
Easting
Northing
Elevation
Depth
Azimuth
Dip
From
To
Interval
eU3O8
 
(m)
(m)
(m)
(m)
(º)
(º)
(m)
(m)
(m)
(ppm)
ASD-001 1
689176
4500731
733.4
51.09
 
 
3.1
6.3
3.2
5,904
 
 
 
 
 
 
 
12.7
14.9
2.1
628
ASD-002 1
689224
4500722
736.5
62.65
 
 
3.8
51.3
47.5
2,120
ASD-003 1
688980
4500779
729.7
123.10
 
 
6.2
33.0
26.7
495
 
 
 
 
 
 
 
44.2
81.0
36.8
539
 
 
 
 
 
 
 
94.6
110.5
15.8
480
ASD-004 1
689137
4500896
743.8
80.11
104
-60
20.0
24.2
4.2
1,433
 
 
 
 
 
 
 
32.6
35.8
3.2
502
 
 
 
 
 
 
 
44.4
53.3
8.9
451
ASD-005
689038
4500919
741.3
137.50
104
-60
26.9
29.2
2.3
351
 
 
 
 
 
 
 
32.3
33.8
1.5
404
 
 
 
 
 
 
 
49.6
58.1
8.5
930
 
 
 
 
 
 
 
64.4
68.3
3.9
1,168
 
 
 
 
 
 
 
108.5
109.7
1.2
1,341
ASD-006
689234
4500873
748.2
64.10
104
-60
22.0
23.6
1.7
346
 
 
 
 
 
 
 
34.5
35.6
1.2
459
ASD-007
689186
4500885
745.7
88.10
104
-60
51.9
56.0
4.1
1,146
ASD-008
689028
4500768
729.9
107.20
 
 
20.0
22.3
2.3
237
 
 
 
 
 
 
 
25.8
28.6
2.9
340
 
 
 
 
 
 
 
31.6
32.7
1.1
681
 
 
 
 
 
 
 
34.7
38.4
3.7
432
 
 
 
 
 
 
 
40.0
43.3
3.3
238
 
 
 
 
 
 
 
47.7
48.8
1.1
830
 
 
 
 
 
 
 
76.3
80.2
3.9
823
ASD-009
689139
4501126
750.7
110.55
 
 
38.0
43.3
5.2
428
 
 
 
 
 
 
 
55.5
56.9
1.4
1,163
 
 
 
 
 
 
 
60.0
61.6
1.6
302
 
 
 
 
 
 
 
85.9
87.4
1.4
3,427
ASD-010
689238
4501106
757.4
118.48
 
 
42.2
43.4
1.2
329
ASD-011
689084
4500910
742.1
99.60
104
-60
48.9
51.5
2.6
277
 
 
 
 
 
 
 
55.0
56.5
1.5
414
 
 
 
 
 
 
 
69.3
83.5
14.2
1,606
ASD-012
689187
4501114
753.7
123.60
 
 
35.8
40.3
4.5
478
 
 
 
 
 
 
 
44.6
48.0
3.4
409
 
 
 
 
 
 
 
49.1
50.4
1.3
598
 
 
 
 
 
 
 
54.0
61.4
7.4
1,584
 
 
 
 
 
 
 
75.0
76.5
1.5
549
 
 
 
 
 
 
 
77.1
78.4
1.3
456
 
 
 
 
 
 
 
80.2
82.0
1.7
561
ASD-013
689552
4501245
759.5
61.40
 
 
26.5
28.0
1.5
1,083
 
 
 
 
 
 
 
30.7
33.0
2.2
268
ASD-014
689544
4501213
758.7
65.00
 
 
30.3
34.9
4.7
388
 
 
 
 
 
 
 
36.7
37.7
1.0
689
ASD-015
689047
4501714
730.4
70.10
 
 
5.7
6.7
1.1
423
 
 
 
 
 
 
 
11.3
17.1
5.8
1,110
 
 
 
 
 
 
 
21.7
23.3
1.6
2,537
 
 
 
 
 
 
 
39.3
40.4
1.1
1,139
ASD-016
689107
4501747
732.8
62.10
 
 
0.2
8.4
8.2
550
ASD-017
689533
4501164
754.7
71.17
 
 
25.0
29.9
5.0
305
 
 
 
 
 
 
 
32.6
33.6
1.1
798
 
 
 
 
 
 
 
41.4
42.7
1.3
614
 
 
 
 
 
 
 
45.0
48.1
3.2
556
 
 
 
 
 
 
 
49.2
50.6
1.5
358
ASD-018
689105
4501133
749.1
120.00
 
 
48.3
52.7
4.4
337
ASD-019
688998
4501672
731.6
51.34
 
 
18.9
20.5
1.6
368
 
 
 
 
 
 
 
22.6
25.0
2.4
255
 
 
 
 
 
 
 
37.3
39.1
1.8
264

1.   Previously announced on 22nd January, 2010

2.   Holes with no dip and azimuth specified are vertical

3.   Drill intersections are calculated using a 200ppm lower cut-off with a minimum 1m intersection

4.   Depth figures are rounded, so differences may occur



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.

 

The information in this report that relates to Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Mr. Ross Corben, who is a Member of The Australian Institute of Mining and Metallurgy and an employee of Berkeley Resources Limited. Mr. Corben 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. Corben consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
 
 

 

 

 

 

 

 

 


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