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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  28-Apr-2021 by Garry J. Payie (GJP)

Summary Help Help

NMI
Name BANDY Mining Division Omineca
BCGS Map 094D038
Status Showing NTS Map 094D08W
Latitude 056º 20' 42'' UTM 09 (NAD 83)
Longitude 126º 27' 51'' Northing 6247366
Easting 656723
Commodities Copper Deposit Types E04 : Sediment-hosted Cu
D03 : Volcanic redbed Cu
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Bandy occurrence is located on a ridge approximately 5 kilometres due south of the confluence of Quenada Creek and the Asitka River.

Regionally, the area is near the contact between Lower Jurassic Telkwa Formation (Hazelton Group) volcanics and Upper Triassic Dewar Formation (Takla Group) sediments and volcaniclastics. The contact between these formations changes from a fault contact to an unconformable contact. The contact trends northwest which is parallel to the major faults. Smaller, more localized faults trend north-northeast.

At the Bandy occurrence, the Telkwa Formation rocks are maroon polymictic conglomerates. Siltstones of the Dewar Formation unconformably overlie the conglomerate. The maroon to light-green siltstones are fine-grained, grading to coarse pebbly sandstones. Mineralized beds and lenses of massive or laminated hard grey to black siltstone are interbedded with the volcaniclastics. Massive veins and lenses, predominantly epidote, commonly cut these rocks (Assessment Report 5995).

Disseminated and/or laminated chalcocite and bornite are found within the grey to black siltstone lenses. These lenses are a few centimetres to 1.5 metres in width and up to 140 metres long (Assessment Report 5995). The epidote veins commonly contain variable amounts of quartz, calcite, pyrite, bornite, chalcocite, and chalcopyrite. These veins are a few millimetres to 0.1 metre wide and can be traced for up to 30 metres (Assessment Report 5995).

WORK HISTORY

In 1976, property work on the Bandy claim by Cominco Ltd. was carried out by two men in June. The main purpose was to delineate the lateral extent and thickness of a 0.6 metre thick siltstone bed containing copper. In 1975, the bed was found to lens out to the southwest but was considered open to the northeast. Trenching in 1976 revealed the source of a mineralized siltstone boulder train which was believed to be the lateral northeastern extension of the main siltstone bed. This siltstone bed was followed to the northeast and found to thin to 15 centimetre before disappearing under heavy talus. It is recorded that 13 metres of trenching was done and 27 silt samples collected on the Bandy Property.

Bibliography
EMPR ASS RPT *5995
EMPR GEM 1976-E173
GSC OF 342
GSC MEM 251
GSC P 74-1 Part A; 76-29
GSC MAP 962A

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