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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  20-Apr-2021 by Karl A. Flower (KAF)

Summary Help Help

NMI 093K3 Mo10
Name GEM, ANN, LIM, OVAL LAKE, PATTAN, ENDAKO, OVAL Mining Division Omineca
BCGS Map 093K005
Status Showing NTS Map 093K03E
Latitude 054º 03' 53'' UTM 10 (NAD 83)
Longitude 125º 09' 02'' Northing 5992862
Easting 359261
Commodities Molybdenum Deposit Types L05 : Porphyry Mo (Low F- type)
Tectonic Belt Intermontane Terrane Stikine, Cache Creek
Capsule Geology

The Gem showing is located about 10 kilometres south-southwest of Endako and is on the Endako mine (093K 006) property.

The geology of the region consists of: 1) a Mississippian to Triassic Cache Creek Group oceanic volcanic and sedimentary assemblage 2) the Upper Triassic dominantly mafic volcanic Takla Group 3) the Lower to Middle Jurassic Hazelton Group mafic to felsic volcanic and sedimentary rocks 4) the Upper Cretaceous to Lower Tertiary Ootsa Lake Group sedimentary and volcanic rocks and 5) the Oligocene and Miocene Endako Group. The region has been intruded by the Lower Jurassic quartz monzonite to granodiorite Topley Intrusive Suite, Upper Jurassic plutons of the Francois Lake Suite and plugs and stocks related to Upper Cretaceous and Tertiary volcanism.

The showing occurs in an area underlain by the Endako quartz monzonite phase. This is one of five intrusive phases recognized on the basis of texture and composition in the Francois Lake Intrusive Suite.

Mineralization consist of pyrite with minor associated molybdenite which occurs within a shear zone cutting the quartz monzonite.

Work History

In 1966, Amax Exploration Ltd. completed a program of geochemical (soil and heavy mineral) sampling and geological mapping on the area as the Gem claims.

In 1970, Endako Mines Ltd. completed a program of soil sampling and a 6.7 line-kilometre ground magnetic survey on the area immediately east of the occurrence as the Oval claims.

In 1980, Placer Development Ltd. completed five percussion drill holes, totalling 290.0 metres, on the Oval claims, located approximately 1.5 kilometres east-northeast of the Gem occurrence. Drilling yielded intercepts of up to 0.017 per cent molybdenite over 54 metres in hole R-337 (Assessment Report 8460).

In 2016, Thompson Creek Metals Co. Inc. completed a minor program of rock, silt, and soil sampling on the northern portion of the Endako property and immediately north of the Gem occurrence. A rock sample (14646), taken approximately 600 metres northeast of the Gem occurrence, yielded 0.009 per cent molybdenum (Assessment Report 36325).

In 2018, Thompson Creek Metals Co. Inc. completed a 17.5 line-kilometre induced polarization survey on several areas of the Endako property including the area of the Gem occurrence.

Bibliography
EMPR AR 1967-116; 1968-143; 1977-189
EMPR ASS RPT 1021, 2408, 3466, 6266, *8460, 18732, 21243, *36325, 38515
EMPR EXPL 1992-69-106
EMPR FIELDWORK 1992, pp. 475-482
EMPR PF (Claim Maps, 1965,1966; Dept. of Mines Summary of Exploration
and Development work,1967,1968,1971; See 093K General file, Endako
Area Maps)
GSC MAP 631A; 907A; 1424A
GSC MEM 252
GSC OF 2593, 3184
GSC P 90-1F, pp. 115-120; 91-1A, pp. 7-13

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