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File Created: 04-Nov-2013 by George Owsiacki (GO)
Last Edit:  15-Oct-2021 by George Owsiacki (GO)

Summary Help Help

NMI
Name ATLIN PROJECT, BCR Mining Division Atlin
BCGS Map 104N052
Status Showing NTS Map 104N12E
Latitude 059º 34' 56'' UTM 08 (NAD 83)
Longitude 133º 38' 56'' Northing 6605666
Easting 576306
Commodities Gold, Silver Deposit Types I01 : Au-quartz veins
Tectonic Belt Intermontane Terrane Cache Creek
Capsule Geology

The Atlin Project occurrence is located along Spruce Creek about 3.3 kilometres northeast of the community of Atlin.

The showing area is located near the Monarch Mountain thrust which is a flat-lying feature characterized by a zone of tectonic brecciation and carbonatization, several metres in width, that affects both upper and lower walls of the thrust. The thrust marks the contact between upper Mississippian to Permian Cache Creek Complex ultramafic rocks in the south from upper Mississippian to Permian basaltic volcanic rocks of the Nakina Formation (Cache Creek Complex) to the north.

The showings are located in a series of drillholes (BCR-1-10, BCR-2-10, BCR-11-09) that intersected strongly altered, sheared and faulted volcanic rocks of the Nakina Formation in proximity to contacts with ultramafic rocks.

In 2009, drillhole BCR-1-10 intersected a 0.63 metre zone of quartz-carbonate-clay-sericite altered mafic flow breccia proximal to two quartz veinlets containing clotty pyrite. The intersection is near the bottom of the hole at 203 metres depth down-the-hole and assayed 1.15 grams per tonne gold and 11.4 grams per tonne silver. Drillhole BCR-2-10 yielded several intersections including: 1.00 metre grading 0.35 gram per tonne gold and 2.8 grams per tonne silver in intensely silicified ultramafic breccia; 2.84 metres grading 0.57 gram per tonne gold and 1.4 grams per tonne silver in a strongly silica-carbonate altered intermediate dike with quartz veinlets; and 0.50 metre grading 1.39 grams per tonne gold and 14.5 grams per tonne silver in brecciated mafic flow breccia hosting a wormy, pyritic quartz veinlet (Assessment Report 32003).

Drillhole BCR-11-09 is located about 150 metres northwest of the previous two holes and yielded 1 gram per tonne gold in metabasalt.

In 2009-10, Blind Creek Resources Ltd. diamond drilled 25 holes totalling 3108.9 metres on their Atlin Project claims.

Bibliography
EMPR ASS RPT *32003
EMPR BULL 94
EMPR OF 1989-15; 1989-24; 1996-11
GSC MEM 307
GSC P 74-47
GSC OF 864
DIAND OF 1990-4
Cordey, F. et al. (1987): Significance of Jurassic Radiolarians from the Cache Creek Terrane, British Columbia, in Geology Vol.15, pp. 1151-1154
Doherty, R.A. (2011-05-19): Technical Report - Atlin Project

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