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File Created: 27-Nov-1987 by Garry J. Payie (GJP)
Last Edit:  15-May-2013 by Karl A. Flower (KAF)

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NMI
Name SILVERCROSS Mining Division Alberni, Victoria
BCGS Map 092C098
Status Showing NTS Map 092C15E
Latitude 048º 57' 44'' UTM 10 (NAD 83)
Longitude 124º 33' 35'' Northing 5424428
Easting 385834
Commodities Silver, Copper Deposit Types D03 : Volcanic redbed Cu
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Silvercross showing is located on a ridge west of the Nitinat River and north east of Tuck Lake, approximately 33 kilometres southeast of Port Alberni and 8 kilometres northwest of the west end of Cowichan Lake.

The area is underlain by Lower Jurassic Bonanza Group rocks comprising mainly amygdaloidal basalts and lesser silicified andesites and volcanic rocks of the Upper Triassic Karmutsen Formation, Vancouver Group.

Locally, disseminated to massive bornite and malachite are seen in epidote-calcite-quartz veinlets hosted in silicified andesite in an old pit. The veinlets are thought to be deuterically related to the original magma. The mineralized zone exposed in the pit is 1.5 metres wide with unknown length. Alteration minerals are the same as those filling the amygdales, which are mainly chlorite and palagonite.

In 1986, Ashworth Explorations, on the behalf of Payton Ventures, completed a program of geological mapping, prospecting, soil sampling and rock sampling. Sampling indicated that silver is associated with the copper mineralization, assaying up to 95.9 grams per tonne silver and greater than 10 per cent copper from grab samples of the pit (Assessment Report 15958). There is evidence of previous work on the property but none has been documented.

Bibliography
EMPR ASS RPT *15958
EMPR FIELDWORK 1989, pp. 503-510
EMPR OF 1988-24; RGS 24, 1990
EMPR PF (In 092C General File - Aeromagnetic Contour Map, Nitinat
Lake Area, Noranda Mines Ltd., date unknown)
GSC MAP 1386A
GSC MEM 13
GSC OF 463; 821; 1272
GSC P 72-44; 76-1A; 79-30
Carson, D.J.T. (1968): Metallogenic study of Vancouver Island with
emphasis on the relationships of mineral deposits to plutonic
rocks, Ph.D. Thesis, Carleton University
EMPR PFD 672880

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