Great Plains Metals Corp. press release
Results of Warren Pratt, PhD visit to Igor
TSXV - TSX Venture Exchange · Gold · Copper · Molybdenum · Rare Earth Elements · Uranium · Canada
CALGARY, June 21 /CNW/ - Sienna Gold Inc. (SGP.V TSX Venture Exchange) reports the results of ongoing soil, trench and rock sampling at its Igor property as reviewed by Dr. Warren Pratt. This program is designed to identify the center of porphyry gold (copper) mineralization at Igor. This is Dr. Pratt's second visit to the site following the recognition in 2006 of widespread porphyry-style (phyllic) alteration and of porphyry intrusions. In addition to the porphyry potential, new manto-, and possible sandstone-, hosted targets are identified.
The next phase of work (2 to 3 months) is designed to:
Identify the mineralized core of the porphyry system Identify appropriate drill targets Determine sandstone-hosted gold potential (cf. Alto Chicama, Barrick).
Recent soil and trench sampling has widened the geochemical anomalies at Igor. The geochemical pathfinder elements for gold, such as arsenic, are strongly anomalous over a strike length of more than two kilometres. An unusually strong molybdenum anomaly, with values up to 0.07% Mo, occurs on the ridge axis at Igor (Domo). This may point to the strongly mineralized core of a gold-copper porphyry system. Recent trenching has confirmed the presence of gold-mineralized porphyry, a very important development at Igor. The intensity of phyllic alteration is also being used to help identify the core of the porphyry system.
Soil, trench and rock sampling is being expanded. This work will fill in the data gaps and is expected to extend the geochemical anomalies. The company has permits and is planning to drill test the porphyry and mantos in the fall of 2007.
Sampling and assaying methodology
Rock chip, channel and soil samples were taken at regular intervals along pre-determined sampling lines. Complete descriptions of the samples were recorded (rock type, alteration, structure, mineralization) and the samples were sent for geochemical analysis.
The samples were analyzed by ALS Chemex Laboratories in Lima by inductively coupled plasma atomic emission spectroscopy ('ICP-AES') for silver and 33 other elements and a 30 gram fire assay technique for gold. 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 property.
Sienna Gold Inc. continues to explore in Peru for precious and base metals. Its major projects are Igor and Pachín Alto.
This press release has been reviewed and approved by Murray Lytle, P.Eng., 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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