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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  14-Apr-2015 by Garry J. Payie (GJP)

Summary Help Help

NMI 093L8 Cu1
Name BORNITE, BAR, DANA, TEX Mining Division Omineca
BCGS Map 093L048
Status Prospect NTS Map 093L08W
Latitude 054º 29' 40'' UTM 09 (NAD 83)
Longitude 126º 25' 33'' Northing 6041586
Easting 666711
Commodities Copper, Silver, Lead, Zinc, Barite Deposit Types H05 : Epithermal Au-Ag: low sulphidation
L01 : Subvolcanic Cu-Ag-Au (As-Sb)
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The area is underlain by Lower Jurassic Hazelton Group (Telkwa Formation) volcanics comprised of andesitic to rhyolitic flows, tuffs, and breccia which strike uniformly northwest and dip about 80 degrees northeast. Mineralization consisting of chalcopyrite, bornite, and tetrahedrite occurs mainly as fragmental rims and disseminations in the matrix of a very strongly silicified andesitic to rhyolitic pyroclastic rock. Minor galena and sphalerite have also been reported. Scattered specks of chalcopyrite also occur in a strongly silicified, buff coloured rhyolite approximately 150 metres to the north. Silver values up to at least 65.14 grams per tonne have been obtained. Barite occurs in small veins (Assessment Report 15479).

In 1986, a surface projection of a low-grade copper-silver bearing zone was defined by diamond drilling. The zone is approximately 300 metres long and up to 7 metres wide, striking northwest-southeast.

The drilling intersected a strongly silicified, stratabound zone with sporadic stockwork development over 20 metres in true thickness, and with a steep northeast dip. Within the zone, weak copper-silver mineralization occurs as disseminations and irregular micro-vein fillings of chalcopyrite and tetrahedrite. Gangue minerals include quartz, calcite, barite, pyrite and jasperoid. The zone appears to be faulted 50 metres below the surface and may be a favourable host for an epithermal precious/base metal deposit.

WORK HISTORY

Normont Copper Ltd. carried out a geochemical survey on the 55 claim Bornite group in 1967. Preliminary Map No.11 (1973) indicates the property was held by E.G. Strimbold.

In 1966 the claims were optioned to Normont Copper Ltd., who trenched the showings and sampled the trenches. In 1967, Normont Copper Ltd. carried out a geochemical survey and conducted geological mapping on the 55 claim Bornite group.

In 1977, Petra Gem Exploration Ltd, drilled 1 AXE backpack hole totaling 1.4 metres and collected 8 rock samples and 7 soil samples. Other work included geological mapping, sampling and prospecting. Minor amounts of vein barite was present at the trench showings as coarsely bladed material, Additional occurrences of barite were noted.

In 1986, Equity Silver Mines Ltd drilled 624.2 metres in 5 NQ diamond-drill holes. Ten trenches were excavated totaling 500 metres.

In 2006, James Dixon prospected the Bornite property area and collected a number of samples for analysis.

Bibliography
EMPR ASS RPT 1153, *6495, *15479, 28539
EMPR BULL *78 (in press)
EMPR EXPL 1977-194; 1987-C304
EMPR MAP 11; 69-1
EMPR P *1990-2
EMR MP CORPFILE (Mexxon Mines Ltd.)
GSC BULL 270
GSC OF 351
EMPR PFD 881269, 681133

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