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File Created: 04-Jan-1990 by Steve B. Butrenchuk (SBB)
Last Edit:  01-May-2023 by Karl A. Flower (KAF)

Summary Help Help

NMI 094F10 Ba1
Name KWADACHA Mining Division Omineca
BCGS Map 094F066
Status Showing NTS Map 094F10W
Latitude 057º 38' 32'' UTM 10 (NAD 83)
Longitude 124º 58' 43'' Northing 6390602
Easting 381892
Commodities Barite Deposit Types E17 : Sediment-hosted barite
Tectonic Belt Foreland Terrane Ancestral North America
Capsule Geology

The Kwadacha barite occurrence is located 4 kilometres north-northwest of the mouth of the North Kwadacha River.

The deposit occurs near the top of a rhythmically bedded black chert, shale, and siliceous argillite sequence of the Upper Devonian Gunsteel Formation (Earn Group). The Barite zone is 1 to 30 metres thick and consists of massive to finely laminated barite with thin argillaceous partings. Barite varies from light grey to white at the bottom, to dark grey at the top. The underlying argillites have been silicified to chert by silica precipitation during early exhalative activity. The cherts and argillites contain thin laminae of pyrite.

Imbricate thrust faults and folding has structurally repeated the barite horizon, which forms resistant weathering outcrops along the crest of a northwest trending ridge south of George's Peak.

Work History

In 1990 through 1994, Ecstall Mining Corp. completed exploration programs of geochemical sampling, geological mapping and prospecting. In 1994, soil sampling returned anomalous values up to 163 parts per million lead, 2859 parts per million zinc and 5970 parts per million barium; previous soil sampling, in 1990, returned up to 309 parts per million lead and 3800 parts per million zinc (Assessment Report 23767). In 2010, Rio Grande Mining Corp. completed a helicopter-borne magnetic survey over the area, as part of the Akie and Sika North claim groups.

Bibliography
EMPR ASS RPT *20494, *23767, 31648
EMPR BULL 103
EMPR FIELDWORK *1981, pp. 149-155
EMPR OF 2000-22
EMPR P 1991-4, pp. 25-86
EMPR PRE MAP 38
CIM EMGJ *Vol.1, No.1, p. 12, 1992

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