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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  08-Jun-2023 by Karl A. Flower (KAF)

Summary Help Help

NMI 104P5 Cu3
Name HOPEFULL Mining Division Liard
BCGS Map 104P022
Status Showing NTS Map 104P05E
Latitude 059º 15' 49'' UTM 09 (NAD 83)
Longitude 129º 42' 21'' Northing 6569619
Easting 459759
Commodities Gold, Silver, Copper, Zinc Deposit Types I01 : Au-quartz veins
Tectonic Belt Omineca Terrane Slide Mountain, Cassiar
Capsule Geology

The Hopefull occurrence is located north of McDame Lake on Troutline Creek in the Cassiar Mountains, approximately 93 kilometres north of the community of Dease Lake.

The area is underlain by Upper Paleozoic Slide Mountain Complex greenstones, with associated tuffaceous lenses. Greenstones were originally pillow lavas.

The greenstones are cut by vertical to steeply south-dipping, east-trending quartz veins with a dominant strike of 085 degrees and a dip of 80 degrees south. They are exposed along strike for 240 metres. Quartz-ankerite-mariposite-pyrite alteration is extensive. Vein widths up to 3 metres have been exposed. Mineralization consists of pyrite, tetrahedrite, chalcopyrite, sphalerite and gold.

In 1984, a grab sample (P3174) assayed 1.3 grams per tonne gold and 166 grams per tonne silver (Assessment Report 12627).

In 2019, a 1.0 metre chip sample (19141) of quartz-sericite-pyrite altered mafic volcanic assayed 1.17 grams per tonne gold (Assessment Report 38989).

Work History

In 1979, the area was prospected by Plaza Resources. In 1984, Sable Resources Ltd. examined the area and completed five diamond drill holes on the Mack (MINFILE 104P 011) occurrence to the north. In 1984, Erickson Gold Mining completed a program of prospecting, geological mapping, geochemical (rock and soil) sampling and trenching on the area as the Camp, Diane and Panda claims.

During the 1990s through the 2020s, the area has been explored in conjunction with the nearby Taurus (MINFILE 104P 012) occurrence and a completed regional exploration history can be found there.

EMPR AR 1935-B20
EMPR ASS RPT 8226, *12560, *12627, *16777, *24275, 30623, 31396, 31397, 32483, *38989, 39350
EMPR EXPL 1980-519; 1987-A42
EMPR FIELDWORK 1980, pp. 55-62; 1981, pp. 156-161; 1987, pp. 245-248; 1988, pp. 323-337
EMPR MP MAP 1992-13
EMPR OF 1989-9; 1996-11
EMPR PFD 674351
GSC MAP 381A; 1110A
GSC MEM 194; *319, p. 119
GSC OF 2779
Harms, T.A. (1986): Structural and Tectonic Analysis of the Sylvester Allochthon, Northern British Columbia, Implications for Paleogeography and Accretion, Ph.D. Thesis, University of Arizona
Zelligan, S. (2019-09-10): National Instrument 43-101 Technical Report on the Cassiar Gold Property
Zelligan, S. (2019-11-12): National Instrument 43-101 Technical Report on the Cassiar Gold Property (Amended)