Great Plains Metals Corp. press release
One Half a Kilometer Northwest of Previously Reported Tunnel Domo Samples Cut on Average 10.3 gpt Gold and 58.8 gpt Silver
TSXV - TSX Venture Exchange · Gold · Copper · Molybdenum · Rare Earth Elements · Uranium · Canada
CALGARY, Sept. 6 /CNW/ - Sienna Gold Inc. (SGP.V TSX Venture Exchange) announces the latest assay results from the Igor Concession. The Domo 7 area sampled and reported here consists of a series of 4 parallel tunnels approximately 60 meters long all contained within a 100 meter width of the manto area. These assays are from 102 samples taken from the geographically highest of 7 tunnels opened by previous owners of the property. Based on exploration to-date at the Igor property it is known that high concentrations of gold and silver are found in areas of tight anticlinal folding which is characteristic of the Domo zone. The three, approximately 1 meter thick mantos in the Domo zone are subparallel shale beds which trapped the hydrothermal fluids during mineralization sequences. The host rocks are composed of Chimu sandstones. The results reported in this news release are approximately 550 meters northwest from the samples reported on August 31, 2006. (Domo 1 workings) The Domo zone extends over an area of approximately 700 meters by 100 meters and the results reported in this press release are from the most northwesterly of the workings which are located approximately 550 meters northwest of the Domo 1 workings which were described in the previous press release. The samples were taken from channel rings every 6 meters along the tunnel as described below.
Latest Assay Results
The assay results have been divided into manto material and host rock material with average grades as shown below.
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Weighted Average Tunnel Weighted Maximum Au Weighted Maximum Au + Ag No. Average Assay g/t Average Ag Assay Equivalent Samples Au g/t Ag g/t g/t g/t(x)
Manto 13.8 94.3 57.9 201 15.0 47 Host Rock 7.7 33.8 59.5 602 8.9 55
Total Sample g/t 10.3 58.8 11.5 102 (x) This calculation assumes 100% recovery of both gold(US$550/oz) and silver (US$11/oz)
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Twenty five of the lead (Pb) samples returned values over 1% with an average assay of 0.8% and a maximum value of 6.8%. As a result of the continuing encouraging results from the Domo the Company has accelerated the preparation of access to drilling locations. A drill has been located and it is expected that drilling will commence in early November or earlier depending when regulatory approvals have been received.
Following is a listing of the most significant sample assays received:
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Gold Assays Au Silver Assays (greater than) 20 g/t (greater than) 100 g/t Sample Sample Lab Sample Au g/t Length Lab Sample Au g/t Length No. (m) No. (m) 1390 21.9 1.0 1392 150 0.8 1408 21.0 0.5 1393 134 0.7 1440 20.2 1.0 1404 106 0.6 1441 46.6 0.5 1407 104 0.9 1451 21.5 0.3 1422 132 0.8 1456 20.3 0.5 1424 139 1.2 1460 39.2 0.7 1439 177 1.0 1464 20.4 0.8 1440 132 1.0 1465 21.4 0.9 1446 110 0.9 1484 27.9 1.4 1455 138 0.6 1486 94.3 0.9 1456 602 0.5 1487 33.8 0.4 1463 109 0.7 1488 23.9 0.8 1480 263 1.1 1481 110 0.6 1482 201 0.5 1487 187 0.4
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Sampling Methodology
The samples were taken by first exposing fresh rock in a 15 centimetre wide by 2 centimetre deep channel forming a ring in the walls and roof perpendicular to the axis of the tunnel and located every 6 meters along the tunnel. Continuous samples within specific lithologies were then chipped from the full width of the channel and collected for analysis. Where the rock was too hard for a full width sample, a narrower sample was taken from within the prepared channel zone ensuring that samples from the full width of the channel were obtained.
Assaying Methodology
The samples were analyzed by ALS Chemx Laboratories in Lima by inductively coupled plasma atomic emission spectroscopy (ICP-AES) analysis for silver and 33 other elements and a 30 gram fire assay technique for the gold analysis. Samples which exceeded the detection limits were re-assayed using a gravimetric fire assay technique. The specific procedures used by the lab can be found in the company's 43-101 report on the Igor Concession.
This press release has been reviewed and approved by Murray Lytle, P.Eng. who is the company's Qualified Person.
The TSX Venture Exchange has neither approved nor disapproved of the information contained herein.
Statements in this press release regarding the Company's business which are not historical facts are "forward-looking statements" that involve risks and uncertainties, such as estimates and statements that describe the Company's future plans, objectives or goals, including words to the effect that the Company or management expects a stated condition or result to occur. Since forward-looking statements address future events and conditions, by their very nature, they involve inherent risks and uncertainties. Actual results in each case could differ materially from those currently anticipated in such statements.
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