Geoscience BC Report 2010-3

An Assessment of Soil Geochemical Methods for Detecting Copper-Gold Porphyry Mineralization through Quaternary Glaciofluvial Sediments at the Kwanika Central Zone, North-Central British Columbia (NTS 93N)
by D.R. Heberlein (Heberlein Geoconsulting) and H. Samson (Serengeti Resources Inc.)

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Report Description
As part of a Geoscience BC funded study, a geochemical orientation survey was carried out over the blind Central Zone Cu-Au porphyry deposit at Serengeti's Kwanika project in north-central BC. The objective of this study was to test various widely used partial and selective extractions in a challenging cover environment to determine which performs the best at detecting the mineralization. In addition, the study aims to provide the mining industry with guidance on the optimum combination of soil horizon and extraction method for detecting deeply buried mineralization in areas of thick glacial cover.

Results of this study show that in order to be successful, a soil sampling program over Quaternary glacial sediments in north-central British Columbia should collect the Ah horizon samples and use aqua regia-low detection limit ICP-MS analyses. In addition field based soil pH and conductivity measurements should be utilized in order to identify potential reduced chimneys over blind sulphide mineralization.

Suggested Reference
Heberlein, D.R. and Samson, H. (2010): An Assessment of Soil Geochemical Methods for Detecting Copper-Gold Porphyry Mineralization through Quaternary Glaciofluvial Sediments at the Kwanika Central Zone, North-Central British Columbia; Geoscience BC, Report 2010-3, 89 p.

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