MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 092HNE184

File Created:	05-Mar-1992	by	Peter S. Fischl (PSF)
Last Edit:	14-Sep-2012	by	Ted Fuller (TAF)

SUMMARY

Summary Help


		NMI	092H10 Cr2
Name	OLIVINE MOUNTAIN, H & H, J & L, TINA CATHY, JAVORSKY'S REEF	Mining Division	Similkameen
		BCGS Map	092H056
Status	Prospect	NTS Map	092H10W
Latitude	049º 31' 09''	UTM	10 (NAD 83)
Longitude	120º 52' 56''	Northing	5487327
		Easting	653278
Commodities	Platinum, Chromium	Deposit Types	M05 : Alaskan-type Pt+/-Os+/-Rh+/-Ir
Tectonic Belt	Intermontane	Terrane	Quesnel, Plutonic Rocks

Capsule Geology

This platinum-chromite showing occurs on the northwest slope of Olivine Mountain, 9 kilometres west-southwest of Tulameen.

The showing is hosted in the dunite-rich core of the Early Jurassic Tulameen Ultramafic Complex, a zoned Alaskan-type intrusive complex. The dunite outcrops over an elongate area extending up the northwest slope of Olivine Mountain to its summit.

Chromite frequently occurs as clusters of disseminated coarse crystals, particularly in areas of intense serpentinization. The mineral also forms small blebs, minute veinlets, massive pods and lenses up to 100 by 6 centimetres in size within the dunite. These are scattered randomly throughout the dunite, not occurring in any significant concentrations.

In a few instances, chromite mineralization is found to contain elevated platinum values. A grab sample of brown olivine pyroxenite with chromite assayed 3.186 grams per tonne platinum (Assessment Report 16125, Appendix 1, sample 11492). A chip sample, taken 150 metres to the south, assayed 1.98 grams per tonne platinum and 1.07 per cent chromium over 7.9 metres (Assessment Report 16691, Appendix 1, page 4, sample 31+35-31+61E). Two other samples (9442, 57981), of uncertain location, assayed 5.49 and 1.1 grams per tonne platinum respectively, and 21.96 and greater than 1 per cent chromium respectively (Assessment Report 16323, Appendix 4). Sample 57981 is of serpentinized dunite with magnetite and chromite. Higher platinum values also occur in strongly serpentinized, mildly asbestos-veined peridotite and dunite (Assessment Report 16691).

The summit and north slope of Olivine Mountain were extensively sampled by Tarnation Mining, North American Platinum Corporation, D.K. Platinum Corporation and Dia Met Minerals Ltd. between 1983 and 1987.

David Javorsky prospected in the area in 2001 under the Prospectors Assistance Program and recovered platinum nuggets from placer deposits (Tulameeen River) with crystals of chromite within them. He also recovered chromite nuggets with included pieces of platinum.

Bibliography

EMPR ASS RPT 128, 1132, 1945, 2274, 11666, 11736, *16125, *16323, *16691, 27009

EMPR FIELDWORK 1981, pp. 218-222; 1987, pp. 281-294

EMPR EXPL 1988-B71-B81

EMPR GF 2000-2; 2000-5

EMPR OF 1986-7, pp. 6-11; 1988-25; 1990-27, pp. 33,34; 1995-25

EMPR P 1992-6

EMPR PAP 2001-03

EMPR PF (Croteau, F.L. (1969): Preliminary Geological Report on Certain Mining Claims, Tulameen Area, B.C., in North American Platinum Corporation (1971): Prospectus, Vancouver Stock Exchange; Mason, J.D. (1968): Report on the Olivine Mountain Property of North American Platinum Corporation Ltd., in North American Platinum Corporation (1968): Prospectus, Vancouver Stock Exchange)

EMR MP COMMOD FILE (MR-CR-301.00)

GSC EC GEOL No. 13, pp. 89-94 (1934)

GSC MAP 46A; 888A; 1386A; 41-1989

GSC MEM *26, pp. 153-155,168-170; 243, pp. 33,34,60

GSC P 85-1A, pp. 349-358

GSC SUM RPT 1923, pp. 84A-101A

CJES Vol. 6, pp. 399-425 (1969); Vol. 24, pp. 2521-2536 (1987)

GCNL #73(April 16),#107(June 4), 1985; #167, 1986; #111(June 10), 1987

Findlay, D.C. (1963): Petrology of the Tulameen Ultramafic Complex, Yale District, British Columbia, unpublished Ph.D. thesis, Queen's University, 415 pages.

EMPR PFD 8590, 8591, 8592, 8593, 8594