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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  18-Dec-1995 by Gilles J. Arseneau (GJA)

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NMI
Name NEWPORT (L.4521) Mining Division Slocan
BCGS Map 082K004
Status Past Producer NTS Map 082K03W
Latitude 050º 00' 18'' UTM 11 (NAD 83)
Longitude 117º 17' 25'' Northing 5539227
Easting 479199
Commodities Silver, Lead, Zinc Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Quesnel
Capsule Geology

The Newport occurrence is situated on the south side of Carpenter Creek, immediately south of Three Forks at 1067 metres elevation above sea level, in the Slocan Mining Division. The occurrence is on Reverted Crown grant Lot 4521.

Regionally, the area lies on the western margin of the Kootenay Arc, in allochthonous rocks of the Quesnel Terrane. In the vicinity of the occurrence, the Quesnel Terrane is dominated by the Upper Triassic Slocan Group, a thick sequence of deformed and metamorphosed shale, argillite, siltstone, quartzite and minor limestone. Rocks of the Slocan Group are tightly and disharmonically folded. Early minor folds are tight to isoclinal with moderate east plunging, southeast inclined axial planes and younger folds are open, southwest plunging with subhorizontal axial planes. The sedimentary sequence has been regionally metamorphosed to lower greenschist facies.

South of the occurrence, the Slocan Group has been intruded by the Middle Jurassic Nelson intrusions which comprise at least six texturally and compositionally distinct phases ranging from diorite to lamprophyre. The most dominant phase is a medium to coarse grained potassium feldspar porphyritic granite. Several feldspar porphyritic granodiorite dikes, apparently related to the Nelson intrusions, also cut the sedimentary sequence near the occurrence (Paper 1989-5).

The property is underlain by massive argillite and quartzite of the Slocan Group. No geological description could be located for the occurrence but it is probably similar to the Lost Atlantis (082KSW153) occurrence, situated about one kilometre northwest. At the Lost Atlantis, lenses of galena and sphalerite occur on bedding planes within argillite.

Production from the Newport occurrence in 1940 yielded 14,774 grams of silver, 87 kilograms of lead and 47 kilograms of zinc from 2 tonnes mined.

Bibliography
EMPR AR 1901-1226; 1940-26,80
EMPR BC METAL MM01329
EMPR BULL 29
EMPR INDEX 3-207
EMPR P 1989-5
GSC MAP 273A
GSC MEM 173; 184; 309
GSC OF 288; 464

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