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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  08-Jul-2020 by Nicole Barlow (NB)

Summary Help Help

NMI
Name LUCKY JACK (L.4731) Mining Division Revelstoke, Slocan
BCGS Map 082K045
Status Prospect NTS Map 082K06E
Latitude 050º 24' 39'' UTM 11 (NAD 83)
Longitude 117º 07' 04'' Northing 5584317
Easting 491631
Commodities Gold, Lead, Zinc, Nickel, Uranium Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
I01 : Au-quartz veins
Tectonic Belt Omineca Terrane Kootenay, Ancestral North America
Capsule Geology

The Lucky Jack prospect is located on a Reverted Crown grant (Lot 4731) in the Slocan Mining division. The property is situated at 715 metres elevation above sea level, 500 metres southeast of the Poplar Creek bridge on Highway 31.

Regionally, the area lies within the Selkirk Mountains of southeastern British Columbia. The occurrence is within the Kootenay Arc, a curving belt of highly deformed metasedimentary and metavolcanic rocks which includes the Upper Proterozoic Horsethief Creek Group, the Upper Proterozoic to Lower Cambrian Hamill Group, the Lower Cambrian Badshot Formation, and the Paleozoic Lardeau and Milford groups. The volcano-sedimentary sequence is intruded by numerous Paleozoic to Mesozoic granitoid plutons.

The Lardeau River area of the Selkirk Mountains is mainly underlain by massive pillow lavas, volcanic breccia and green phyllitic rocks of the Index Formation and by grey-green mica schist of the Broadview Formation. Grey phyllitic rocks and marble of the Milford Group are exposed near the edges of the Mesozoic Mobbs Creek, Rapid Creek and Poplar Creek stocks. All rocks have undergone regional metamorphism to middle or upper greenschist facies. Rocks of the Milford Group have also been affected by thermal metamorphism (Geological Survey of Canada Bulletin 193).

On the Lucky Jack property carbonaceous phyllitic rocks of the Index Formation are cut by Mesozoic meta-andesite and metadiorite dikes. The dikes are fine grained, massive, and usually contain disseminated pyrite. Quartz veins are emplaced along joints and fractures within the intrusive rocks. The veins pinch out and do not continue within the phyllitic rocks. Free gold occurs with pyrite and arsenopyrite within the quartz veins. Oxidation and leaching of the sulphide minerals has resulted in secondary enrichment of gold with some assays being as high as 144 grams per tonne gold (Geological Survey of Canada Memoir 161). The quartz veins are numerous and irregular. Gold content is irregular within the veins and smaller veins appear to be higher grade than the larger ones. The prospect has been explored with two adits excavated on two separate veins 60 and 90 centimetres wide (GSC Memoir 161).

Work in 1952 outlined the presence of lead, zinc, nickel and uranium from the Lucky Jack property as well as the previously known gold occurrences (Minister of Mines Annual Report 1952).

Chip sampling in 1981 of a 9-metre wide zone of disseminated arsenopyrite within a meta-andesite yielded 3.0 grams per tonne gold for a total length of 12.5 metres (Assessment Report 9801). Diamond drilling of the arsenopyrite zone in 1982 assayed 0.78 gram per tonne gold over 7.7 and 8.2 metres of true width (Assessment Report 10129).

In 1980 and 1981, Westmin conducted an exploration on the property containing the occurrence. The work included geology, soil geochemistry, and trenching.

In 2003 and 2004, Cream Minerals conducted exploration programs consisting of mapping and sampling of historic workings.

In 2004 to 2006, Cream Minerals completed a soil sampling program and an airborne magnetic and electromagnetic survey.

In 2008, Cream Minerals completed nine excavator trenches on the property, focusing on the Bullock and Goldsmith areas.

In 2016 and 2017, Black Tusk Resources Inc. completed a ground geophysical survey of the property containing the occurrence.

Bibliography
EMPR AR 1903-112,114,116,126; 1904-119; 1905-252; *1914-319,320;
1929-336; 1932-181; 1952-191
EMPR ASS RPT 8483, 8862, *9801, 10129
EMPR EXPL 1980-113
GSC BULL 193
GSC MAP 235; 1277A
GSC MEM *161, p. 43
GSC OF 432; 464
EMPR PFD 825276, 825278
Dandy, L. (2017-07-28): Technical Report on the Goldsmith Property.

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