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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  15-Aug-1996 by Keith J. Mountjoy (KJM)

Summary Help Help

NMI
Name MOLKA (L.2675) Mining Division Osoyoos
BCGS Map 082E003
Status Showing NTS Map 082E03W
Latitude 049º 00' 24'' UTM 11 (NAD 83)
Longitude 119º 29' 03'' Northing 5431170
Easting 318334
Commodities Copper Deposit Types I06 : Cu+/-Ag quartz veins
K01 : Cu skarn
Tectonic Belt Omineca Terrane Okanagan
Capsule Geology

The Molka prospect is located at 457 metres elevation on the eastern slopes of Mount Kruger, 3 kilometres southeast of Osoyoos, British Columbia. The Dividend-Lakeview past producer (082ESW001) lies 1.75 kilometres to the northwest.

Little information is available on the early history of the Molka (Lot 2675) Reverted Crown grant. Work presumably began before 1903 when the claim was first Crown granted to J. Rink and associates. Little else was done on the property until 1964 by Noranda Exploration Co. Ltd. In 1968, Granby Mining Co. Ltd. conducted further exploration in the vicinity. In 1986 and 1987, Markus Resources Inc. conducted extensive exploration in the Dividend-Lakeview area, including on the Molka property.

The regional geology of the Dividend-Lakeview area consists of medium to coarse-grained granodiorite of the composite Middle Jurassic Similkameen batholith. To the west this includes alkali syenite and nepheline syenite of the Kruger intrusion. The Fairview intrusion outcrops to the north. The Similkameen intrusion extends from 10 kilometres north of the Canada-United States border, south into Washington state. The granodiorite is grey-green, medium to coarse grained and dominantly composed of quartz, plagioclase and hornblende. The Similkameen batholith has intruded metasediments and metavolcanics of the Carboniferous to Permian Kobau Group. Intensely folded and metamorphosed quartzite, greenstone, phyllite, chlorite or mica schist with intercalations of dioritic rocks and sparse limestone lenses comprise lithologies. To the west lie a series of highly sheared schists, greenstones and quartzites known informally as the Kruger Schists. The greenstone has been highly sheared in many areas associated with emplacement of the Similkameen intrusion and other intrusions. Shear zones strike southeast and dip moderately to steeply northeast and southwest. Local variations occur however.

Silicification composed of quartz pods, stringers and veins is common throughout the greenstone and in quartzite near the southwest corner of the Gold Hill claim. Minor carbonate is also present.

The Molka claim is underlain by intensely sheared and fractured greenstone. The most prominent shears and fractures strike to the north or east with steep dips to the northwest. Crossfractures with chlorite and epidote occur adjacent to major shears.

The Molka showing consists of numerous chalcopyrite mineralized quartz veins with malachite staining and epidote-rich skarn hosted in chloritized greenstone.

In the southwest corner of the Molka claim, a short adit (less than 6 metres) was driven on a 30-centimetre wide quartz vein containing disseminated chalcopyrite and malachite staining. The hostrock is greenstone.

In the northeast corner of the Molka claim, lies a small skarn zone. The zone was weakly responsive to magnetic and electromagnetic surveys. Thirty metres to the northwest, a 7.6-metre drillhole was previously drilled on another skarn zone.

Bibliography
EMPR AR 1903-248; 1966-244; 1968-221
EMPR ASS RPT *658, 808, 1182, 2922, 8188, 9180, 14877, 16074, 21634, 22987, 23381
EMPR BULL 1 (1932), p. 88; 20 (1945, Part III), p. 18
EMPR GEM 1971-383
EMPR OF 1989-5
GSC MAP 84A; 341A; 538A; 539A; 541A; 15-1961; 1736A; 2389
GSC MEM 38, pp. 389-423; 179, p. 20
GSC OF 481; 637; 1505A; 1565; 1969
GSC P 37-21, pp. 37-40
GSC SUM RPT 1912, p. 211
EMPR PFD 651, 825484

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