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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  02-Jun-15 by Karl A. Flower(KAF)

Summary Help Help

NMI
Name DAM, M 82, BERN Mining Division Osoyoos
BCGS Map 082E081
Status Showing NTS Map 082E13W
Latitude 49º 53' 18" N UTM 11 (NAD 83)
Longitude 119º 59' 35" W Northing 5530511
Easting 285017
Commodities Copper, Molybdenum Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Intermontane Terrane Plutonic Rocks
Capsule Geology

The DAM showing is located 0.8 kilometre northeast of the Brenda mine open pit (MINFILE 092HNE047), approximately 22 kilometres northwest of Peachland.

The area is underlain by porphyritic quartz diorite of the Early Jurassic Pennask Batholith, locally known as the Brenda stock. Chalcopyrite and molybdenite and minor associated pyrite occur in hairline fractures and narrow (3 to 10 millimetres) quartz veins. Silicate minerals are unaltered. Chlorite is ubiquitous in fine fractures. K-feldspar alteration selvages are well developed in the margins of quartz veins. Molybdenite is present in gouges and slips and is associated with quartz, which shows signs of post- mineralization disruption.

Drilling in 1986 encountered chalcopyrite and molybdenite in all three holes. Assay results were generally less than 0.1 per cent copper and less than 0.01 per cent molybdenum; the best intersection was 0.15 per cent copper and 0.019 per cent molybdenum over 6.1 metres (Assessment Report 15594). This was considered an uneconomic grade by Brenda Mines Ltd., who concluded that the fracture system at the DAM showing was too tight to host economic mineralization, and that no further drilling was warranted.

In 1970, Arrow Inter-America completed an airborne magnetic survey, totalling 752 line-kilometres, on the area as the Tic and Toc claims. In 1986, Brenda Mines Ltd. drilled three holes totalling of 355 metres. During 2006 through 2012, Bitterroot Resources completed programs of rock, silt and soil sampling, geological mapping, 147.6 line-kilometres of ground magnetic surveys and a 66.2 line-kilometre ground induced polarization survey on the area as the North Brenda property.

Bibliography
EMPR ASS RPT 2701, *15594, 30902, 32070, 32788, 33743
EMPR EXPL 1987-C35
EMPR OF 1994-8
EMPR RGS 29
GSC MAP 538A; 15-1961; 1701A; 1712A; 1713A; 1714A; 1736A; 7686G; 8522G
GSC OF 409; 637; 736; 1969
CIM Special Volume 15, pp.186-194

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