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File Created: 31-Mar-1993 by Discovery Consultants (DISC)
Last Edit:  31-Mar-1993 by Discovery Consultants (DISC)

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NMI
Name REEF Mining Division Vernon
BCGS Map 082L004
Status Showing NTS Map 082L03W
Latitude 050º 03' 50'' UTM 11 (NAD 83)
Longitude 119º 20' 54'' Northing 5548376
Easting 331933
Commodities Agate, Gemstones Deposit Types
Tectonic Belt Omineca Terrane Overlap Assemblage, Plutonic Rocks
Capsule Geology

The Reef showing is located 23 kilometres south-southwest of Vernon between Wood Lake and Clark Creek.

In this area, east of the Okanagan Valley fault zone, sedimentary and volcanic rocks of the Devonian to Triassic Harper Ranch Group are in probable fault contact with metamorphic rocks. Middle Jurassic granitic plutons intrude Shuswap Terrane metamorphic rocks. Eocene Penticton Group and Miocene Chilcotin Group volcanic and sedimentary rocks cap areas of older rock.

In the Penticton Group, an agate-rhyolite bed contains abundant yellow-orange chalcedonic carnelian(?) agate within pyroclastic flow rocks, possibly representing a sinter. The bed is about 5 metres thick and extends over an area of at least 600 by 300 metres. The bed, part of the informally named Trepanier Rhyolite, unconformably overlies monzonite and granodiorite, and underlies Penticton Group felsic tuffs and Miocene fluvial sediments and basalt flows.

In 1977-79, Union Oil Company explored the Miocene sediments for uranium. Geological mapping, hydrogeochemical, radiometric, airborne magnetometer and drill programs were conducted.

Bibliography
EMPR ASS RPT 6631, 6944, *7700
EMPR EXPL 1979-98
EMPR FIELDWORK 1982, pp. 33-36; 1987, pp. 55-58; 1988, pp. 355-363
EMPR MAP 7216G, 8512G
EMPR OF 1989-5, 1990-30
EMPR PF (In 082LSW General - Claim Map, 1966)
EMPR RGS 1976
GSC MEM 296
GSC OF 637, 736, 2167
GSC P 89-1E pp. 51-60
Falconbridge File
EMPR PFD 650074

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