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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  09-Jan-1996 by Gilles J. Arseneau (GJA)

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NMI 082F14 Ag48
Name OAKLAND (L.15806), EDINBURGH, STAR, CENTRE STAR, SARNIA FR., CULTIS, CULTIS FR., NORTH STAR, NORTH STAR NO. 1, NORTH STAR NO. 2, ESSEX, MOUNTAIN CHIEF NO. 3 Mining Division Slocan
BCGS Map 082F094
Status Prospect NTS Map 082F14W
Latitude 049º 56' 43'' UTM 11 (NAD 83)
Longitude 117º 16' 55'' Northing 5532585
Easting 479771
Commodities Silver, Lead, Zinc Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Quesnel
Capsule Geology

The Oakland property is situated on Wakefield Creek, southwest of Selkirk Peak at 1372 metres elevation above sea level in the Slocan Mining Division. The underground workings are on the Oakland Crown grant (Lot 15806). It is about 6.4 kilometres from Silverton and may be reached by a trail that leaves Silverton creek at the Hewitt mill site.

The Oakland claim was Crown-granted to F.F. Liebsher in 1904. Only one report has been written on this property, possibly due to the fact that the work done on it has been largely of a prospecting nature.

In 1946 the Oakland group, consisting of 9 located claims, was owned by F. Mills of Silverton. Development work at this time consisted of 5 short adits over a vertical range of about 91 metres. The lower adit is 15 metres long; No. 2 adit is 56.3 metres long, No. 3 adit is 30 metres long; the upper two are very short.

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 very fine grained clastic sedimentary rocks of the Upper Triassic Slocan Group that include locally weakly metamorphosed argillite, quartzite, limestone and some tuffaceous rocks. These sedimentary rocks are intruded by dikes, sills and stocks of varied composition and origin. Middle Jurassic Nelson intrusions are immediately south of the Slocan Group and are inferred to be the source of granitic sills and dikes found in the area. The Nelson intrusions 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 (Paper 1989-5).

On the Oakland property the Slocan Group comprises massive argillite and quartzite. The strata are tightly folded, faulted and cut by granitic dikes. The occurrence is hosted within a shear zone that strikes northeast and may correlate with the Canadian occurrence (082FNW197). The mineralized vein is strongly silicified and follows an altered granitic dike on its northwest wall. The vein dips 30 to 40 degrees southeast, varies from 30 to 180 centimetres in width and is hosted within a 7 metre wide shear zone. It carries pockets of galena and sphalerite in a gangue of siderite and quartz. The vein has been explored with at least five short adits over a vertical range of 90 metres.

A sample of high grade galena ore assayed 2948 grams per tonne silver, 47.5 per cent lead and 5.6 per cent zinc while a sample of sphalerite ore assayed 55 grams per tonne silver, 0.28 per cent lead and 26.7 per cent zinc (Minister of Mines Annual Report 1946).

Bibliography
EMPR AR 1904-297; *1946-167
EMPR BULL 29, pp. 52,65,120
EMPR P 1989-5
EMPR PF (See 082FNW - General: Geological plan of the Silverton area, B.C. Department of Mines, 1966; *Starr, C.C. (1947): Report on the Oakland Group of Mining Claims, 7 pages and sketches)
GSC MAP 273A; 1090A
GSC MEM 173; 184; 309
EMPR PFD 2164, 674464

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