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File Created: 15-Aug-96 by Keith J. Mountjoy(KJM)
Last Edit:  01-Jan-01 by BC Geological Survey (BCGS)

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NMI
Name KET 20, KET 20 GROUP, KET 11-12, KET 20-21 Mining Division Greenwood
BCGS Map 082E004
Status Showing NTS Map 082E03E
Latitude 49º 03' 25" N UTM 11 (NAD 83)
Longitude 119º 14' 40" W Northing 5436213
Easting 336029
Commodities Chromium, Nickel Deposit Types M03 : Podiform chromite
Tectonic Belt Intermontane Terrane Okanagan
Capsule Geology

The Ket 20 occurrence is located at 1204 metres elevation, 6.5 kilometres southwest of Bridesville, British Columbia. The property has been owned by Crownex Resources (Canada) Ltd. since 1991. No previous work is known.

The showing is underlain by a sequence of metasediments and metavolcanics of the Permian to Carboniferous Anarchist Group. Greenstone, quartzite, greywacke, limestone and locally paragneiss comprise the Anarchist Group. These have been intruded by granodiorite, quartz diorite, granite, quartz monzonite, monzonite and syenite of the Middle Jurassic Nelson intrusions.

Lithologies encountered at the Ket 20 occurrence include greenstone, quartzite, minor marble and serpentinized peridotite. Skarn has been developed locally along the northeast side of the serpentinite. Talc alteration is closely associated with the serpentinite. Biotite hornblende granodiorite occurs immediately to the northeast.

Mineralization found at the Ket 20 showing consists of stringers and pods of anhedral magnetite hosted in the serpentinite. A nickel (fuchsite) or chromium (mariposite) mica has also possibly been identified. Minor pyrite also occurs.

Significant nickel and chromium values were obtained from rock geochemical samples of serpentinite. Sample 90-CM-317R yielded 0.14 per cent nickel and 0.12 per cent chromium. Samples 90-CM-341R analysed 0.10 per cent chromium and 0.12 per cent nickel (Assessment Report 21001). Similarly, 90-CM-342R analysed 0.14 per cent chromium and 0.17 per cent nickel (Assessment Report 21001). Two other samples, 90-CM-527R and 90-CM-528R, yielded equally anomalous chromium and nickel.

Bibliography
EMPR ASS RPT *21001, 22177
EMPR OF 1898-5
GSC MAP 84A; 538A; 539A; 37-21; 15-1961; 1738A
GSC MEM 38, pp. 389-423
GSC OF 481; 637; 1505A; 1565; 1969

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