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File Created: 18-Apr-1996 by Jay W. Page (JWP)
Last Edit:  10-Oct-1996 by Jay W. Page (JWP)

Summary Help Help

NMI
Name LEAH, OUTBACK Mining Division Greenwood
BCGS Map 082E078
Status Showing NTS Map 082E09W
Latitude 049º 42' 23'' UTM 11 (NAD 83)
Longitude 118º 28' 31'' Northing 5507031
Easting 393631
Commodities Gold, Silver Deposit Types H05 : Epithermal Au-Ag: low sulphidation
Tectonic Belt Omineca Terrane Plutonic Rocks, Monashee
Capsule Geology

The LEAH showing is located on the OUTBACK property in the Granby River valley, approximately 25 kilometres west-southwest of the village of Edgewood.

The general area is underlain by gneiss of the Proterozoic Monashee Complex. Within the Granby River valley there is a north trending, easterly dipping normal fault, along which andesite of the Eocene Marron Formation (Penticton Group) is preserved. Co-magmatic with the Marron Formation are Eocene Coryell Intrusions which form small isolated intrusions throughout the area. The Coryell Intrusions are largely syenitic in composition, although a quartz-feldspar porphyry, 1.25 kilometres to the south-southwest, may be a calc-alkaline variation. The propylitically altered quartz monzonite hosting the LEAH showing may be an unnamed Middle Jurassic intrusion.

Mineralization at the LEAH showing consists of en-echelon anastomosing sets of weakly banded, sugary textured, chalcedony veins which are hosted by a north-northwest trending fault zone. The fault zone has an estimated true width of 25 metres and is believed to be an extension of the same fault hosting the CLIFF (082ENE067) prospect, 1.25 kilometres to the south-southeast. Veins typically show coarse radial quartz along the outside of the veins with fine chalcedony infilling towards the vein centre. Wallrocks are strongly bleached and kaolinized with traces of pyrite, carbonate replacement and possible alunite alteration.

The OUTBACK property was staked in 1988-89 by the Canadian Nickel Company Limited (INCO). INCO carried out several field programs of stream sediment sampling, follow-up prospecting, soil sampling and geological mapping in 1989. The gold potential of this area was identified through the use of heavy mineral stream sediment techniques.

In 1990, INCO carried out detailed soil sampling, prospecting, geological mapping and extensive rock sampling on a number of gold- silver occurrences in this area, including the nearby CLIFF (082ENE067), BETH (082ENE068), JANE (082ENE070), and TARA (082ENE071) occurrences. At the LEAH showing, a 0.7-metre chip sample of grey and white banded chalcedony with breccia fragments of wallrock assayed 0.837 gram per tonne gold and 2.5 grams per tonne silver (Assessment Report 21032).

In 1991, INCO carried out a 6-hole, 807.1-metre diamond-drill program on the CLIFF (082ENE067) prospect 1.25 kilometres to the south-southeast. A number of drill intersections assayed greater than 0.5 gram per tonne gold (Assessment Report 21916). It is not recorded if additional work was done on the LEAH showing at that time.

Bibliography
EMPR ASS RPT 19441, *21032, *21916
EMPR OF 1994-8
EMPR RGS 29
GSC MAP 6-1957; 1701A; 1712A; 1713A; 1714A; 1736A
GSC OF 409; 736; 1969

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