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File Created: 21-Jan-2001 by Ron McMillan (RHM)
Last Edit:  19-Sep-2019 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name SNO Mining Division Clinton
BCGS Map 092P006
Status Showing NTS Map 092P02W
Latitude 051º 04' 42'' UTM 10 (NAD 83)
Longitude 120º 52' 43'' Northing 5660677
Easting 648599
Commodities Molybdenum, Copper, Gold, Silver, Tungsten Deposit Types K07 : Mo skarn
K01 : Cu skarn
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The Sno occurrence is located on the west side of Snohoosh Lake, in the Deadman River valley, 38 air-kilometres north of Savona. It is accessible by gravel road to Snohoosh Lake and then by boat across the lake. It can also be reached on an old logging road that leaves the Deadman road 0.5 kilometre south of Mowich Lake.

The area is underlain by the Upper Triassic Nicola Group which is exposed in a window eroded through overlap assemblage volcanic and sedimentary rocks of the Miocene Chilcotin Group (Open File 1989-21; Geological Survey of Canada Memoir 363). The overlap assemblage consists of two formations: The Deadman River Formation consists of diatomite-bearing lacustrine sediments, volcanic ash and clastic sedimentary rocks and is overlain by plateau lavas of the Chasm Formation. The Nicola Group rocks are comprised of augite andesite flows, polymictic volcanic breccias, which are interfingered to the south with volcaniclastic sediments and minor limestone.

Locally, molybdenite, pyrite and minor chalcopyrite mineralized lenses, up to 0.3 metres wide, are hosted by garnet skarn developed in limy argillites and carbonatized and chloritized mafic volcanic rocks of the Upper Triassic Nicola Group. The Nicola rocks contain up to 10 per cent pyrite and minor pyrrhotite (Assessment Report 9136). The Nicola rocks are exposed in a window eroded through basalts of the Miocene Chasm Formation. The window is exposed in the Deadman river valley system.

In 1980, four samples yielded from trace to 1.9 grams per tonne gold, trace to 27.4 grams per tonne silver, trace to 3.28 per cent copper, 0.003 to 0.162 per cent molybdenum and 0.01 to 0.13 per cent tungsten tri-oxide (Property File - J.W. McLeod [1980-09-17]: Report on the Sno Group).

In 1981, diamond drilling intersected a silica- and chlorite-altered augite andesite cut by numerous calcite veinlets. Drillhole 81-2 intersected molybdenite mineralization hosted in garnet skarn with minor chalcopyrite; the highest assay was 0.174 per cent molybdenum across 1.0 metre (Assessment Report 9136).

There is no record of work until 1980, when Mr. M. Dickens of Savona staked the property and optioned it to Newhawk Gold Mines Limited. Subsequently a 12-kilometre grid was prepared and magnetometer, VLF-EM and induced polarization surveys were completed, as well as a 236-sample soil geochemical survey with analyses for copper, molybdenum, silver and zinc. In 1981, a five-hole diamond drill program, totalling 666 metres, was completed.

Bibliography
EMPR ASS RPT *9136
EMPR FIELDWORK 2000, pp. 1-30
EMPR OF 1989-21
EMPR PF (*J.W. McLeod [1980-09-17]: Report on the Sno Group)
GSC MAP 1278A
GSC MEM 363
EMPR PFD 521692

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