MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 104B 345

File Created:	10-Jan-1988	by	Garry J. Payie (GJP)
Last Edit:	24-Mar-2022	by	Nicole Barlow (NB)

SUMMARY

Summary Help


		NMI
Name	UTC (SULPHURETS), WEST, SULPHURETS, RED RIVER, BRUCEJACK	Mining Division	Skeena
		BCGS Map	104B050
Status	Prospect	NTS Map	104B08E
Latitude	056º 28' 03''	UTM	09 (NAD 83)
Longitude	130º 11' 24''	Northing	6258750
		Easting	426675
Commodities	Gold, Silver	Deposit Types	H05 : Epithermal Au-Ag: low sulphidation L03 : Alkalic porphyry Cu-Au H08 : Alkalic intrusion-associated Au
Tectonic Belt	Intermontane	Terrane	Stikine

Capsule Geology

The area is underlain by rocks of the Lower Jurassic Unuk River Formation, Hazelton Group. These rocks consist of sandstone, wackes, and shale overlain by lapilli-tuff of andesitic composition. The Brucejack fault and associated splay faults cut the country rock in a north-south to northwest direction. North of Brucejack Lake, the fault system is bounded on the east by rocks of the Lower Jurassic Betty Creek Formation, Hazelton Group. A variety of Jurassic horn- blende syenite and alkali feldspar syenites occur in the area.

Several diamond-drill holes have been drilled to explore the UTC Zone, discovered in the 1988 drill program that tested the West Zone (104B 193) at depth. Drilling first intersected significant miner- alization 300 metres below surface and about 75 metres east of the West Zone which dips steeply northeast and strikes 138 degrees.

The nature of the deposit was not described but is likely similar to the epithermal-quartz stockwork character of the West Zone. West Zone veins occur within intensely quartz-sericite altered tuff-breccia adjacent to a volcanic-sedimentary contact. A horn- blende-feldspar-porphyry-syenite intrusion occurs immediately west of the West Zone.

A 9.14 metre drill section from the UTC Zone assayed 409 grams per tonne gold and 1572 grams per tonne silver (Newhawk Gold Mines Ltd., Press Release, Oct. 31, 1988).

Refer to West (104B 193) for details of related mineralization and work history.

Bibliography

EMPR ASS RPT 6255, 9435, 10268, 10698, 11667, 14672, 15684, 15688, 15724, 17133, 17166, *18564, 21821, 21823, 21828, 21884, 22657, 22741, 23172, *24610, 28925, 32074, 32718, 36214, 39314

EMPR BULL 63

EMPR EXPL 1976-E181; 1977-E222; 1980-464; 1981-248; 1982-382; 1983-520; 1986-B57,C441

EMPR FIELDWORK 1982, pp. 171-174; 1987, pp. 199-209

EMPR OF 1988-4

EMPR PF (Bridge, D.A., Ferguson, L.J., and Brown, M.G., (1981): 1980 Exploration Report on the Sulphurets Property for Esso Minerals Canada Ltd. (unpublished); Bridge, D., and Melnyk, W., (1982): 1981 Exploration Report on the Sulphurets Property for Esso Minerals Canada Ltd. (unpublished); Bridge, D., and Melnyk, W., (1983): 1982 Exploration Report on the Sulphurets Property for Esso Minerals Canada Ltd. (unpublished); Britten, R.M., (1983): Regional Geological Assessment of the Stewart-Sulphurets Area, and Geology and Alteration of the Sulphurets Prospect Area for Esso Minerals Canada Ltd. (unpublished); Lomenda, M.G., (1983): Geology, Alteration and Mineralization of the Mitchell-Sulphurets Ridge and Snowfields Gold zone, Sulphurets Property for Esso Minerals Canada Ltd. (unpublished); Melnyk, W., (1983): 1983 Canada Ltd. (unpublished); Newhawk Gold Mines Limited, Annual Reports for 1985, 1986 and 1987; Newhawk Gold Mines Limited, News Releases: Dec.10, 1985; May 5,Jun.3,Jul.16,20,Aug.24,Oct.5,Nov.13, 1987; Feb.12,Apr.13,May 17,Oct.6, 1988; Geology Map - 1:31,250 scale, Newmont Exploration of Canada Ltd., 1960's; Newhawk Gold Mines Ltd., Press Releases, Dec.1,1986, July 16,Nov.5,30,Third Quarter Report,1987, Oct.6,*31, 1988)

GSC MAP 9-1957; 1418A

GSC P 89-1E, pp. 145-154

CIM BULL Vol. 80, #904, Aug. 1987

CMJ April 1, 1986

GCNL #163,#280, 1980; #98,#166,#225, 1982; #240, 1983; #160,#163, #192,#242, 1985; Aug.15, Nov.13,#127,#157,#160,#174,#183,#218,#223, 1986; Nov.9,#24,#27,#35,#87,#108,#119,#165,#181,#194,#215,#231, 1987; #31,#134,#135,#136,#151,*#194,#211,#222, 1988

IPDM Dec.5, 1985

N MINER Dec.29, 1983; Jul.4,Aug.8,Sept.9,23,Oct.14,Dec.16, 1985; June 2,July 14,Aug.25,Sept.8,22,Oct.13,Nov.24,Dec.4,30, 1986; Apr.1,20,Feb.9,Sept.14,Dec.1,14,30, 1987; May 2,Jun.6,Aug.1,8, Oct.17,Nov.7, 1988

N MINER MAG *Jan. 1989

NW PROSPECTOR Dec./Jan., Oct./Nov., 1988 (Northern Highlights)

V STOCKWATCH Jun.5,11,17,Aug.25,26,Sept.1,18,30,Oct.7,8,Nov.5,9,30, 1987; Feb.12, 1988

Equity Preservation Corp. Compilation: Stewart-Sulphurets-Iskut, Dec. 1988, (Showing No. B59)

Kirkham, R.V. (1963): The Geology and Mineral Deposits in the vicinity of the Mitchell and Sulphurets Galciers, M.Sc. Thesis, University of British Columbia

Simpson, T.M., (1983): The Geology and Hydrothermal Alteration of the Sulphurets Deposits, Northwest British Columbia, M.Sc. Thesis, University of Idaho

Armstrong, T.A. (2010-01-14): Technical Report and Resource Estimates on the West, Bridge, Galena Hill, Shore, SG & Gossan Hill Gold & Silver Zones of the Brucejack Property

Ghaffari, H. (2010-09-10): Technical Report and Preliminary Assessment of the Snowfield-Brucejack Project

Ghaffari, H. (2010-10-28): Technical Report and Preliminary Assessment of the Snowfield-Brucejack Project

Armstrong, T.A. (2011-03-04): Technical Report and Updated Resource Estimate on the Brucejack Property

Armstrong, T.A. (2011-04-04): Technical Report and Updated Resource Estimate on the Snowfield-Brucejack Property

Ghaffari, H. (2011-06-03): Technical Report and Preliminary Economic Assessment of the Brucejack Project

Armstrong, T.A. (2012-01-12): Technical Report and Resource Estimate on the Brucejack Property

Ghaffari, H. (2012-02-20): Technical Report and Updated Preliminary Economic Assessment of the Brucejack Project

Jones, I. (2019-04-04): Technical Report on the Brucejack Gold Mine

Pretium Resources Inc. (2020-03-09): Technical Report on the Brucejack Gold Mine, Northwest British Columbia

EMPR PFD 903720, 904042, 19538, 804327, 804343, 802722, 802725, 802726, 802729, 802738, 802911, 802912, 802913, 802914, 802915, 802916, 802917, 802918, 802989, 803194, 803197, 803217, 803249, 803410, 803412, 803425, 803672, 803678, 803679, 803680, 803730, 803784, 803786, 804018, 804116, 804200, 804214, 804282, 804284, 803195, 803947, 803971, 803975, 803983, 804023, 804090, 804097, 804107, 804112, 804162, 804171, 804176, 804177, 804178, 804179, 804180, 804181, 804182, 804183, 804184, 804185, 804186, 804187, 804188, 804189, 804190, 804191, 804192, 804193, 804194, 804195, 804196, 804197, 804198, 804199, 861942, 861943, 503017