The JN95-4-1 barite occurrence is located in a northwest-facing valley, approximately 8 kilometres north of Brownie Mountain.
Regionally, the area lies immediately east of the Northern Rocky Mountain Trench, which here coincides with the Kechika River valley, in a broad belt of Paleozoic basinal-facies sedimentary strata known as the Kechika Trough, part of Ancestral North America (Map 38; Exploration and Mining Geology, Volume 1; Geological Survey of Canada Map 1713A). The area is underlain by a generally northwest-trending and southwest-dipping belt consisting dominantly of quartz arenite sedimentary rocks the Cambrian Gog Group, a strongly deformed sequence of grey to brown dolostone, shale, siltstone and chert of the Silurian to Devonian Road River Group and a varied unit composed mostly of chert-pebble conglomerate and quartz sandstone, and blue-black siliceous shale and siltstone of the Devonian and Mississippian Earn Group (Geological Survey of Canada Map 42-1962, 1712A; Geoscience Map 1998-9). All rock units have been deformed into tight, northeast-overturned folds and imbricated by thrust faults.
Sample JN95-4-1 is represented as a laminated to massive grey barite, and baritic lenses in mudstone, alternating over 2 metres. The beds occur within Upper Devonian to Lower Mississippian Earn Group sediments. A sample of the barite assayed 0.56 per cent barium (Geoscience Map 1998-9). Several other barite layers within siltstone, mudstone and slate occur over a 2-kilometre northwest-trending area.
Work History
In 1978, Texasgulf Canada Ltd. completed a program of geological mapping and geochemical (rock, silt and soil) sampling on the area as the Solo 1-4 claims. Samples (921A/6/78 and 921A/1001/78) of spring tuffa deposits, taken from a small creek valley north of the plotted location of the occurrence, yielded 0.66 and 0.29 per cent zinc (Assessment Report 7292).
In 1996, Cominco Ltd. staked the area as the Musk claims and completed a program of prospecting and sampling. Two samples (R9611493-494) of a barite from the Musk 7 claim, located in a small creek valley to the north, each assayed over 50 per cent barium (Assessment Report 24979).
In 2011 and 2012, BCarlin Resources Ltd. completed regionally extensive programs of geochemical (rock, silt and soil) sampling on the area as the Netson Lake property.