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File Created: 23-Mar-2021 by George Owsiacki (GO)
Last Edit:  23-Mar-2021 by George Owsiacki (GO)

Summary Help Help

NMI
Name OSPREY 6, 7 Mining Division Omineca
BCGS Map 094C016
Status Showing NTS Map 094C02W
Latitude 056º 06' 60'' UTM 10 (NAD 83)
Longitude 124º 51' 06'' Northing 6220605
Easting 384868
Commodities Lead, Silver, Zinc Deposit Types E12 : Mississippi Valley-type Pb-Zn
Tectonic Belt Omineca Terrane Cassiar
Capsule Geology

The Osprey 6, 7 occurrence is located about 740 metres west of Flegel Creek and 1.4 kilometres south of Osilinka River, approximately 38 kilometres north of the community of Germansen Landing.

The showing is underlain by Lower Cambrian Atan Group phyllites, siltstones and quartzites striking 186 degrees, dipping 40 degrees west. Topographically above these are a series of grey to white limestone cliffs trending 002 degrees with well-developed jointing at 120 degrees and 060 degrees; the limestone may be part of the Ordovician to Lower Devonian Echo Lake Group. Occasional siderite veins cut through the limestone. At least one large cave is present and much of the rock is very vuggy, often with well-formed calcite crystals. Irregular patches of tan-weathering dolomite occur, especially near the bottom of the cliffs.

Mineralization occurs as disseminated galena+/-sphalerite+/-pyrite in brecciated limestone and dolomite. Galena seems more concentrated at a boundary between dark grey dolomite at the top, and fragments of the above cemented by white crystalline to cream cryptocrystalline calcite. Also present in varying amounts are yellow and orange iron oxides. The area immediately around the showing has little exposure and the limestone cliffs end 28 metres to the south; to the north the hill slopes down to a creek gully.

In 1990, mineralization was first discovered under an overturned tree. Pits dug down to rock in a ten metre radius from this showing uncovered galena mineralization. In 1990, a rock sample (W-24089-A) from a 10-centimetre-wide galena zone in iron oxide-rich breccia assayed 1.98 per cent lead and 65.4 grams per tonne silver (Assessment Report 20456).

Bibliography
EMPR ASS RPT *20456
EMPR FIELDWORK 1989, pp. 101-114; 1991, pp. 127-145; 1992, pp. 109-134
EMPR OF 1990-17; 1993-2; 1995-6; 1996-19
EMPR GEOS MAP 1994-3; 2001-4
EMPR BULL 91
GSC MEM 274
GSC MAP 1030A
GSC OF 864

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