Extract from MINFILE Occurrences: 082M 080
Name: STANMACK, OLE BULL, BONANZA KING (L.2658)
Development status: Prospect
Underlying rock types consist of metasedimentary rocks interlayered with mafic volcanic rocks. The metasediments consist of quartzites, schists, phyllites, calcareous schists and carbonates. The metavolcanics are tholeiitic flows and mafic tuffs metamorphosed to greenstone and chloritic phyllite. The rocks exposed are correlated to Hoy's (Bulletin 71) Metavolcanic-Phyllite Division and Quartzite Schist Division of probable Lower Paleozoic Hamill Group and Upper Proterozoic Horsethief Creek Group (Assessment Report 11860).
Phase 2 and phase 3 folds are developed in an inverted stratigraphic panel. Predominant schistosity is east to southeast with dips commonly at 20 degrees east.
Two sets of quartz veins occur in the area. The commonly mineralized discordant veins strike 10 to 20 degrees and dip 70 to 85 degrees west. They range 0.15 to 4 metres in width. Barren veins, concordant with bedding, although with steeper dips, are up to 3 metres thick.
The mineralized veins are composed essentially of milky quartz and often contain minor pyrite and green chrome mica and lesser pyrrhotite. Scheelite occurs in some of the gold-bearing veins. The gold occurs both in the quartz veins and in the country rock immediately adjacent to the auriferous veins.
Quartz veins in the Ole Bull shaft area lie within calcareous phyllites. A grab sample assayed 44.6 grams per tonne gold. A tungsten assay by Newmarch (1942) gave 9.1 per cent tungsten.
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