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File Created: 31-Oct-1995 by Garry J. Payie (GJP)
Last Edit:  03-Jun-2020 by George Owsiacki (GO)

Summary Help Help

NMI
Name PR8, TURNAGAIN RIVER Mining Division Liard
BCGS Map 104I036
Status Showing NTS Map 104I07W
Latitude 058º 18' 31'' UTM 09 (NAD 83)
Longitude 128º 55' 17'' Northing 6463072
Easting 504607
Commodities Copper, Gold, Silver, Lead Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Cache Creek, Plutonic Rocks
Capsule Geology

The PR8 occurrence is located about 68 kilometres east-southeast of the community of Dease Lake.

The showing occurs within a 5-kilometre-wide belt of upper Mississippian to Permian ultramafic rocks of the Cache Creek Complex consisting of serpentinized peridotite, dunite and pyroxenite. Rocks of the Mississippian to Triassic Kedahda Formation (Cache Creek Complex) consisting of argillite, shale, phyllite, slate, quartzite and andesite are faulted in with the ultramafic rocks. Interbedded limestone and porphyry also occur.

A "porphyrite" dike of undetermined extent crosses the westernmost branch of Ferry Creek at its headwaters. Outcrops of the dike show "a promising quantity" of pyrite and chalcopyrite. In 1986, a sample of the outcrop assayed 1.69 per cent copper, 0.31 per cent lead, 6.17 grams per tonne silver and 0.41 gram per tonne gold (Assessment Report 16047). Mineralization is assumed to be polymetallic vein-type.

In 1985, Powder Ridge Resources Inc. performed airborne magnetic and VLF-EM surveys on their PR 1-7 claims. The survey results revealed magnetic highs and lows, VLF-EM anomalies, and lineations with predominant northwest trends and strike lengths of 400 to 2000 metres. In 1987, additional exploration was completed by D.O. Friedlund on the PR 8-9 claims with geological mapping, soil, silt, and rock sampling. Also in 1987, Powder Ridge Resources Inc. performed trenching and soil sampling on their PR 4-7 claims. A total of 12 rock grab samples and 11 soil samples were collected and assayed.

During 1996, Loumic Resources Ltd. performed trenching, geological mapping, and soil sampling northwest of PR 7 and along the Ferry Creek drainage of King Mountain. The 1996 exploration resulted in the collection of 196 soil and 33 trench samples. Trenching identified faults, shearing, listwanite alteration, copper staining, oxidized pyrite, and anomalous values in copper and arsenic. The soil surveying indicated four or five areas anomalous in copper-arsenic possibly associated with gold.

During July and August of 2007, Turnagain River Exploration Ltd. conducted a reconnaissance exploration program over the Turnagain property, consisting of prospecting and heavy mineral concentrate stream sediment sampling over at least seven showings (King Kong, 104I 067; Spring, 104I 110; King Mountain, 104I 108; PR8, 104I 109; PR7, 104I 107; Alice Shea Jade, 104I 104; and Alice Shea Creek, 104I 005).

Bibliography
EMPR ASS RPT *16047, *29542
EMPR OF 1989-18; 1996-11
GSC OF 610; 2262; *2779
GSC BULL 504
GSC MAP 9-1957; 29-1962; 1418A; 1712A
GSC P 78-1A, pp. 25-27

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