Drilling Report
18 2월 2008 - 6:04PM
UK Regulatory
RNS Number:1786O
Tianshan Goldfields Ltd
18 February 2008
Tianshan Goldfields Limited
YELMAND - JINXI BLEG RESULTS SHOW EXCELLENT GOLD RECOVERY
- Successful completion of Bulk Leach Extractable Gold tests on all drill
core from the Yelmand and Jinxi deposits confirms ore heap leach
amenability.
- Average leach recoveries for Yelmand and Jinxi were 79.8% and 66.9%
respectively, on minus 2mm crushed drill core, after five days of
leaching.
- Leach recoveries were shown to be independent of gold head grade.
Tianshan Goldfields Limited ("Tianshan or the Company") (AIM/ASX: TGF) owns 90%
of the 2.6moz Gold Mountain project in the Xinjiang Province of North West
China. The Company's aim is to develop the Gold Mountain project into a large
tonnage, open pit mining and heap leach operation. Gold recovery results from
metallurgical testing on the Yelmand-Jinxi deposit continues to confirm heap
leach amenability.
Further to the results reported for the Mayituobi deposit on 18 October 2007,
Tianshan is pleased to report the average gold Bulk Leach Extractable Gold "BLEG
" leach recovery for the Yelmand (472 composites) and Jinxi (324 composites) was
79.8% and 66.9% respectively on 5m composite samples. The BLEGs were carried out
on five metre composites of minus 2mm crushed drill core, with leaching carried
out over a period of five days.
The results show that the gold recovery at Yelmand and Jinxi appears independent
of head grade. The highest grade 5m composite, containing 8.3g/t Au (Jinxi),
leached to total 87.1% gold recovery after five days.
The BLEG results will be incorporated into the respective Yelmand and Jinxi
resource block models, suitably factored downwards to estimate heap leach
recovery at the design crush size of minus 6.3mm. This will provide an
estimation of recoverable gold on a block-by-block basis, providing a global
average recovery for the deposits. A combination of gold grade and leach
recoveries, on a block-by-block basis, will assist Tianshan to evaluate mine
planning, pit design and project economics. The BLEG results will also be used
to define samples for further column leach testing.
Table 1 shows a summary of the BLEG results for the resources that make up the
Gold Mountain project.
Table 1: Summary of -2mm BLEG Results
Resource Assay Head Leach
Name Grade Recovery
(g/t) (%)
Yelmand 0.8 79.8
Jinxi 1.2 66.9
Mayituobi 0.77 91.7
Average 0.99 79.5
Note: Figures used are rounded
TheBLEG results will also be used to define samples to be used for further
column leach testing for detailed heap leach design purposes.
Background Information
Mineral Resource
Following the completion of the 2007 field season, Tianshan reported Mineral
Resource estimates for the Yelmand, Jinxi (includes Balake), Mayituobi deposits
and the new Lion deposit within the Gold Mountain Project (Table 2, Figure 1 &
2).
Table 2: Gold Mountain Micromine January 2008 Mineral Resource Estimate (at 0.4
g/t Au cut-off grade) in accordance with JORC guidelines
Tianshan Goldfields - Gold Mountain Project - Total Mineral Resource as at January 2008
Measured Indicated Inferred Total Resource
Deposit Tonnes Au Au Tonnes Au g Au Ounces Tonnes Au Au Tonnes Au g Au Ounces
g/t Ounces /t g/t Ounces /t
Yelmand-Jinxi 21,942,000 0.9 642,000 46,422,000 0.9 1,268,000 16,807,000 0.9 473,000 85,172,000 0.9 2,383,000
Mayituobi 1,269,000 1.1 43,000 2,251,000 0.9 62,000 436,000 0.7 10,000 3,957,000 0.9 115,000
Lion 26,000 0.7 538 1,221,000 0.6 22,000 4,398,000 0.8 119,000 5,644,000 0.8 142,000
Total 23,237,000 0.9 686,000 49,894,000 0.8 1,352,000 21,641,000 0.9 601,000 94,772,000 0.9 2,640,000
Note: Figures used are rounded
For further information please contact Grant Thomas or Jason Bontempo on
+61 89 221 7729
Yours faithfully
Grant Thomas
Managing Director
Mr SL Allnutt (AusIMM, MAIG), Chief Geologist of Tianshan Goldfields Limited,
and Mr K S Liddell (FAusIMM) a director of the Company, compiled the technical
aspects of this report relating to the Gold Mountain Project. Mr Liddell and Mr
Allnutt have sufficient experience that is relevant to the style of
mineralisation and type of deposit under consideration and to the activity that
is being reported on to qualify as a Competent Person as defined in the 2004
Edition of the Australasian Code for Reporting of Mineral Resources and Ore
Reserves. Mr Allnutt and Mr Liddell consent to the inclusion in the report of
the matters in the form and context in which it appears.
FOR FURTHER INFORMATION, PLEASE CONTACT:
Tianshan Goldfields Limited
Level 22, Allendale Square
77 St Georges Terrace
Perth WA 6000
Telephone: +61 8 9221 7729
Fax: +61 8 9221 7866
Keith Liddell - Chairman
Grant Thomas - Managing Director
Jason Bontempo - Chief Financial Officer
WH Ireland Limited
11 St James's Square
Manchester
M2 6WH
Telephone: +44 161 8322174
David Youngman
Katy Mitchell
This information is provided by RNS
The company news service from the London Stock Exchange
END
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