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Indpt Expert Report on Drilling & Geophysical Prgm

29 Nov 2011 07:00

RNS Number : 9160S
Great Western Mining Corp. plc
29 November 2011
 



29 November 2011

Great Western Mining Corporation PLC

("Great Western", "the Company" or "GWM")

Independent Expert View Strengthens GWM's Mineral Claims

 

Great Western Mining Corporation PLC, the AIM and ESM listed Copper, Silver and Gold, explorer in Nevada with claims covering 7,305 hectares (73 sq. km), announces the publication of an independent expert's report on the Company's proposed drilling program. The report sets out drill targets, site preparations and plan for drilling operations which are scheduled to commence early in the new year.

 

Highlights:

 

·; The report refers to six areas that are permissive for the occurrence of base and precious metals

 

·; Two of these are now to be tested by the initial $305,000 drilling programme. 

 

·; Both are in the Black Mountain claim group and both are considered permissive of sulphide mineralization hosting copper and/or precious metals.

 

 

The report has been prepared by W T Cohan and Associates, Inc of Colorado, USA. WT Cohan and Associates also prepared the Competent Person's Report (CPR) for Great Western's AIM listing earlier this year.

 

Emmett O'Connell, Chairman of Great Western comments:

 

"This validation is a significant further step forward for the Company. We have now identified where we will be drilling and how much it will cost. The independent mining consultant, Mr Cohan is highly expert in his field and this particular geographic area, and we are in good hands in following his suggestions. We look forward to updating shareholders in the near future."

 

Enquiries:

GWM

Emmett O'Connell, Chairman

Melvyn Quiller, Chief Executive

 

00 353 51 565844

0771 289 9588

NOMAD and Broker - Libertas Capital

Tim Cofman-Nicoresti/ Neil Pidgeon

 

0207 569 9650

ESM Adviser and Irish broker - Bloxham

Peter O'Carroll

 

00 353 1611 9263

UK Financial PR - Hansard

Nicholas Nelson/Guy McDougall

0207 245 1100

nnelson@hansardcomms.com

Irish PR - Gordon MRM

Brendan McGrath

00 353 1665 0453

00 353 87 9370266 (mob)

 

 

Notes to Editors

 

GWM's operations are based in Mineral County, Nevada and all of its claims are located on the Walker Lane trend and Golconda Thrust Fault, in the Excelsior Mountain range which hosted a number of the 19th Century "bonanza" mines. The Company is incorporated and headquartered in Ireland with the Chief Executive, Melvyn Quiller based in offices in Colchester, England.

 

 

Beginning of Report:

 

 

SUMMARY

 

The geophysical program has consisted of interpreting low level aero magnetic data, infrared spectral imaging and ground-based induced polarization surveys. The program has disclosed six areas that are permissive for the occurrence of base and precious metals. A drilling program is planned to test two of these areas. The drilling program is estimated to cost $(US)305 thousand and would require five weeks to complete.

 

INTRODUCTION & SCOPE

 

Great Western Mining Corporation, PLC ("GWM") possesses the mining rights on 7,305 hectares of mineral lands in Mineral County, Nevada USA, 32 kilometers SW of the town of Hawthorne. The area has produced copper, gold, silver, and saline salts since the mid to late 19th Century. One of the more significant operations was at the camp of Candalaria, located 30 KM east of GWM's property holdings. Here approximately 2,375 tonnes of silver were recovered from 1863 to 1997.

 

There are numerous exposures of high grade copper mineralization in the district and at least five are on the property controlled by GWM. Samples and metallurgical tests reveal that the copper is readily soluble in sulphuric acid, with low acid consumption. As such, these occurrences are attractive targets for exploration by open pit mining and heap leaching.

 

This report discusses the geophysical programs completed as at this date and a brief drilling program intended to test two of the sic geophysical target areas discovered by the work to date.

 

 

GEOPHYSICAL PROGRAM

 

The geophysical program consists of three separate tasks:

 

(1) Interpretation of low level aero magnetic data.

(2) Spectral interpretation of high altitude infrared imagery (ASTER).

(3) Ground based induced polarization/ resistivity surveys.

 

Task No. 1 utilized public domain data that had been acquired during the 1999-2001 period. The study area covered 432 square kilometres, centered on GWM's property blocks. The study identifies ten areas of geological interest with respect to the possible location of large disseminated sulfide copper ("porphyry copper") occurrences. Six of these targets are located on lands controlled by GWM.

 

 

Task No. 2 consisted of identifying areas of hydrothermal alteration by the spectral processing of high altitude infrared imagery, known as ASTER imagery. The acronym "ASTER" refers to "Advanced Space-borne Thermal Emission Reflectance Radiometer" and the data are available from the National Aerospace Agency ("NASA") Jet Propulsion Laboratory website at http://asterweb.jpl.nasa.gov/.

 

The project required the interpretation of visible and near infrared short wave infrared and thermal infrared spectra data. Seven "clay" alteration minerals, iron oxide and silicification alterations were identified at 16 separate locations of which 6 (considered to be the most important) are located on property controlled by GWM. The most significant area found is at a location that shares many geologic features that are similar to those extant at the mining camp of Candalaria. Drilling is planned for this area.

 

Task No. 3 consisted of conduction ground base induced polarization ("IP") and resistivity surveys at two anomalous areas that had been identifies by the results as Task Nos. 1 & 2.

 

The project consisted of surveying five lines at each location for a total of ten lines aggregating 25 kilometers in length. The first project area was in the north-west portion of the main property block, known as the "Black Mountain" claim group. Here five lines, each 2.4 kilometers long were established along a NW direction and spaced 600 meters apart with the detectors spaced 150 meters apart. Data acquired using a transmitted frequency of 0.125 Hz.

 

The lines were orientated to cross cut a suspected high angle structure (normal fault?) along which occurrences of high grade oxidized copper mineralization were known to occur. The survey succeeded in identifying the structure and an anomalous zone suggesting the presence of sulfide mineralization, possibly copper and/ or precious metals at a depth of 300 meters.

 

The second area of investigation was at the SW portion of the same property block. It was centered on a strong magnetic low and significant surface alteration, (ASTER Anomaly A4) that was identified in Tasks 1 & 2. In addition, a significant occurrence of high grade oxidized copper mineralization is found in the same area. This copper occurrence has been named the "Double Prospect". A series of five lines, aggregating 14.1 kilometers in length were surveyed. The lines were oriented in a N-S direction. The initial three lines were placed on 1,500 meter spacing, with the center line being extended south to survey an ASTER alteration anomaly, No. A5, associated with the westward projection of the Golconda Thrust Fault (one of the significant geologic features of Candalaria).

 

The westerly most line disclosed the presence of a significant IP anolmaly at a depth of 300 to 400 meters. This line was then off set in each side by parallel survey lines, 6000 meters distant. The surveys confirmed the presence of an IP anomaly, commencing at a depth of 150 meters and reaching its maximum intensity at a depth of 400 meters. The anomaly appears to be centered 190 meters west of the Double Prospect and appears to have a WSW trend. A deep drill hole is planned here to test this anolaly, as the strong IP response and magnetic low are permissive of the occurrence of a large body of sulfide mineralization hosting copper and/ or precious metals.

 

DRILLING PROGRAM

 

A initial program comprising six holes is planned for two separate locations; the Double Prospect and the A6 Anomaly areas (both in the Black Mountain claim Group). Three holes are planned at each location. The drilling method will be reversed circulation rotary ("RCR"), collecting chip samples on 1.52 meter intervals. The drill hole diameter will be 10 centimeters and the bailing methods will be high velocity compressed air. A high pressure down the hole hammer will be used to advance the hole. This initial program is estimated to cost $ (US)305 thousand and require five weeks to complete.

 

DRILLING AT DOUBLE PROSPECT

 

A program comprising two shallow 122 meters holes angled at 60° below horizontal is planned to test the vertical and lateral continuity of the oxidised copper mineralization at the Double Prospect. A third, deeper, vertical hole will be drilled at 190 meters west of the Double Prospect to test the IP anomaly. The total depth of this hole is planned to be 427 meters.

 

The total scope of work is 671 meters of drilling and 1,460 meters of new access road construction.

 

DRILLING AT A6 ANOMALY AREA

 

Three vertical holes, each 122 meters deep are planned for this area. The purpose is to test the lower unit of the Candalaria Formation in the vicinity of the Golconda Thrust Fault. The local geology is similar to that at the prolific silver camp of Candalaria, which is located 24 kilometers east of the project area.

 

Aster imagery interpretation has identified a broad area of intense iron oxide alteration on surface and which is bounded by the E-W trending Golconda Thrust Fault on the North and the NE trending structure on the south. The holes will be drilled along a NW-SE fence and spaced 244 meters apart. The total scope of work at this area comprises 366 meters of drilling and 1.83 kilometers of new access road construction.

 

W T Cohan, P.Eng.

5 November 2011

 

 

 

 

This information is provided by RNS
The company news service from the London Stock Exchange
 
END
 
 
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