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File Created: 26-Feb-1991 by Greg K. Kulla (Fox Consultants) (GKK)
Last Edit:  18-Nov-2021 by Del Ferguson (DF)

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NMI 094B3 Zn1
Name CORAL #2, LAC ST. PIERRE, CORAL Mining Division Liard, Omineca
BCGS Map 094B013
Status Showing NTS Map 094B03W
Latitude 056º 09' 26'' UTM 10 (NAD 83)
Longitude 123º 24' 49'' Northing 6223655
Easting 474309
Commodities Zinc Deposit Types
Tectonic Belt Foreland Terrane Ancestral North America
Capsule Geology

The Coral #2 occurrence, located 1.8 kilometres southeast of Mount Burden and 92 kilometres north of the town of MacKenzie, occurs in Ancestral North America terrane Paleozoic platformal carbonates. It lies 1.6 kilometres west of the Coral prospect (Minfile 094B 008).

Ordovician Skoki Formation, Silurian Nonda Formation, Silurian and Devonian Muncho-McConnell Formation, and Lower and Middle Devonian Stone Formation and Middle Devonian Dunedin Formation carbonates, overlain by Devonian and Mississippian Besa River Formation limy shale and Mississippian Prophet Formation cherty dolomite, are exposed in a folded thrust plate, east of Mount Burden. West of Mount Burden, Cambrian to Ordovician Kechika Group clastics and carbonates, Ordovician Skoki Formation carbonates and Nonda Formation carbonates comprise the Mount Burden anticlinorium. The surface showing, discovered in 1985, 300 metres southwest of Lac St. Pierre, comprises 10 by 25 metres of dolomite breccia cemented with smithsonite and minor disseminated sphalerite. A rock sample, collected in 1985, assayed 2.36 per cent zinc, 0.01 per cent lead and 0.343 grams per tonne silver (Assessment Report 15040). Follow-up drilling intersected 0.34 per cent zinc and 0.01 per cent lead in a 20-centimetre zone of dolomite breccia (Assessment Report 15040). The dolomite breccia at the base of the Dunedin Formation varies in thickness from 6.5 to 19.5 metres and is probably the same horizon that hosts the Coral occurrence (094B 008) a few kilometres to the east.

The Minfocus 2015-2016 fieldwork, and research enabled by that work, plus the LiDAR survey in late 2017, have together added substantially to the knowledge (showings, soil and stream-sediment surveys) accumulated in the three earlier phases of exploration at Coral. Widespread zinc values seen across the Coral property include: rock samples on Poco Ridge, soil anomaly, two showings and sphalerite ± galena in drill core at Hound Dog Creek, and strong, extensive stream-sediment anomaly in Tangle Creek (Assessment Report 37639).

Refer to MINFILE CORAL 094B 008 and POCO 094B 007 for more information on the Coral property.

Bibliography
EMPR EXPL 1977-E210; 1985-C343; 1986-C377; 1987-C318
EMPR ASS RPT 6552, 13724, *15040, *16245, 25845, 35708, 35730, 36370, 37639
GAC MDD Spec.Pub. 5, 1061 pp., 633-654.
GSC MEM 425
GSC MAP 1634A; 1232A
GSC P 69-11
CJES 15, pp.1737-1762
PR REL Minfocus Exploration Corp.,
Manns, F.T. (1981): Stratigraphic Aspects of the Silurian-Devonian Sequence Hosting Zinc and Lead Mineralization Near Robb Lake, Northeastern British Columbia, Unpublished Doctoral Dissertation, University of Toronto, p. 252
EMPR PFD 16546, 885516

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