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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  25-Sep-1995 by Gilles J. Arseneau (GJA)

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NMI
Name ARGENTA, CLINTON (L.1032), MATILDA P (L.1035), BUTTE (L.1038) Mining Division Slocan
BCGS Map 082K026
Status Prospect NTS Map 082K02W
Latitude 050º 14' 16'' UTM 11 (NAD 83)
Longitude 116º 54' 03'' Northing 5565073
Easting 507072
Commodities Lead, Zinc, Copper, Silver, Gold Deposit Types E12 : Mississippi Valley-type Pb-Zn
E13 : Irish-type carbonate-hosted Zn-Pb
Tectonic Belt Omineca Terrane Kootenay, Ancestral North America
Capsule Geology

The Argenta prospect is located at 1550 metres elevation above sea level, on a north branch of Hamill Creek in the Slocan Mining Division. The property consists of three Crown grants, Clinton (Lot 1032), Matilda P (Lot 1035) and Butte (Lot 1038). The main workings are on Lot 1032.

Regionally, the area lies within the Kootenay Arc near the margins of the Ancestral North American Terrane. The Kootenay Arc is a curving belt of highly deformed metasedimentary and metavolcanic rocks which includes the Upper Proterozoic Horsethief Creek Group, the Eocambrian Hamill Group, the Lower Cambrian Badshot Formation, and the lower Paleozoic Lardeau Group. The volcano-sedimentary sequence is intruded by numerous Ordovician, Devonian and Mississippian granitoid plutons. The rocks have undergone regional metamorphism to middle or upper greenschist facies (Paper 1993-1).

The prospect is on the western limb of the Duncan anticline within dolomite and limestone of the Lower Cambrian Badshot Formation which forms a narrow complexly folded band that separates micaceous quartzite of the Mohican Formation (Hamill Group) to the east from the phyllites of the Lardeau Group to the west. On the property, the Badshot Formation is overturned, dips at low angle to the northeast and plunges northwest.

The Argenta occurrence consists of two veins located on Lot 1032. The veins strike northwest and dip 55 degrees west. The main vein consists of quartz with pyrite and chalcopyrite carrying silver and minor gold values. The vein occurs in a fissure zone 3 to 6 metres in width. The second vein consists of disseminated pyrite, sphalerite and galena in grey quartz. Both veins are within siliceous dolomite of the Badshot Formation near the contact with the underlying phyllites of the Index Formation (Lardeau Group). The two veins have been explored by trenching and with at least 300 metres of underground workings.

Bibliography
EMPR AR 1904-162
EMPR ASS RPT 12941
EMPR BULL *49, pp. 70,76, Fig. 3
EMPR FIELDWORK 1992, pp. 9-16
EMPR GEOS MAP 1995-1
EMPR PF (82KSE General File - Geology map by P. Billingsley, 1958)
GSC MAP 1326A
GSC MEM 369
GSC SUM RPT 1908, pp. 88-89
Pope, A.J. (1989): The Tectonics and Mineralization of the Toby- Horsethief Creek Area, Purcell Mountains, Southeast British Columbia, Canada, unpublished Ph.D. Thesis, University of London, England

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