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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  28-Feb-2008 by Karl A. Flower (KAF)

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Name LASSIE, DONEN 361 Mining Division Greenwood
BCGS Map 082E056
Status Showing NTS Map 082E10W
Latitude 049º 35' 55'' UTM 11 (NAD 83)
Longitude 118º 55' 34'' Northing 5495786
Easting 360820
Commodities Uranium Deposit Types D04 : Basal U
Tectonic Belt Omineca Terrane Overlap Assemblage, Plutonic Rocks
Capsule Geology

The LASSIE uranium showing is located 500 metres to the west of Lassie Lake and approximately 10.2 kilometres northwest of the Kettle Valley community of Christian Valley.

The showing is underlain by metasedimentary rocks of the Carboniferous-Permian Anarchist Group and granodiorite and diorite of an unnamed Middle Jurassic intrusion. These are overlain by the Miocene-Pliocene Chilcotin Group, which consists of an olivine basalt and tuff breccia, up to 100 metres thick, and minor basal conglomerate. The basalts and conglomerate were deposited along a northeast trending paleovalley.

The property was staked in 1975 for Nissho-Iwai Canada Ltd. who carried out a 5-hole, 738 metre diamond-drill program in 1976. Anomalous radioactivity was identified in hole BCF-78. It measured 1000 counts per minute (background 50 counts per minute) on a GP-27 down-hole probe. The radioactivity is mainly associated with the basalt and tuff breccia. Uranium equivalent is 0.028 per cent uranium (Assessment Report 5982).

EMPR ASS RPT *5982, 8105
EMPR EXPL 1976-29
EMPR OF 1994-8
EMPR P 1979-6, p. 33
EMPR PF (Boyle, D.R. (1979): Dispersion of Uranium in the Vincinity of Miocene Basal Type Uranium Occurances in the Lassie Lake Area)
GSC MAP 6-1957; 1701A; 1712A; 1713A; 1714A; 1736A
GSC OF 409; 551; 736; 1969
GSC P 79-1A, pp 349-356
CIM BULL Aug. 1980, Vol. 73, No. 820, pp. 89-108
ECON GEOL Vol. 77, 1982, p. 1180
GCNL #80, 1978