MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 082FSW351

File Created:	22-Mar-1991	by	Jennifer W. Pell (JP)
Last Edit:	22-Mar-1991	by	Dorthe E. Jakobsen (DEJ)

SUMMARY

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		NMI
Name	THREE SISTERS, YMIR KYANITE, BALDY MOUNTAIN	Mining Division	Nelson
		BCGS Map	082F035
Status	Showing	NTS Map	082F06E
Latitude	049º 20' 39''	UTM	11 (NAD 83)
Longitude	117º 02' 13''	Northing	5465717
		Easting	497316
Commodities	Kyanite	Deposit Types	P02 : Kyanite-sillimanite schists
Tectonic Belt	Omineca	Terrane	Ancestral North America

Capsule Geology

The Three Sisters occurrence comprises four kyanite showings in an elongate north trending area, 14 kilometres in length, centered just east of Ymir.

The area occurs on the east flank of the Nelson batholith, where Triassic to Precambrian metamorphosed sedimentary strata are exposed.

Strata of the Hadrynian Three Sisters Formation (Windermere Supergroup) outcrop in the core of an anticline. Kyanite schists contain up to 15 per cent kyanite porphyroblasts that have an average size of 2.5 by 0.5 centimetres.

Bibliography

EMPR BULL 41; 109

EMPR FIELDWORK 1980, pp. 149-158; 1981, pp. 28-32, pp. 176-186; 1987, pp. 19-30; 1988, pp. 33-43; 1989, pp. 247-249; 1990, pp. 291-300

EMPR MAP 7685G; RGS 1977; 8480G

EMPR OF 1988-1; *1988-26; 1989-11; 1991-16

GSC MAP 51-4A; 175A; 1090A

GSC MEM 94, p. 72; 308, pp. 156,174

GSC OF 1195

GSC P 51-4

*McAllister, A.L. (1950): Geology of the Ymir map-area, British Columbia; Unpublished Ph.D. Thesis, McGill University, Montreal, Quebec

EMPR PFD 680084