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File Created: 07-Dec-1992 by William H. Halleran (WHH)
Last Edit:  06-Jan-2021 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name DM, JR, FRED 4 Mining Division Liard
BCGS Map 094E063
Status Prospect NTS Map 094E11W
Latitude 057º 38' 13'' UTM 09 (NAD 83)
Longitude 127º 29' 30'' Northing 6389293
Easting 590053
Commodities Silver, Lead, Copper, Gold Deposit Types H05 : Epithermal Au-Ag: low sulphidation
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The DM occurrence, discovered in 1988, is exposed on a northeast-trending ridge situated approximately 8.5 kilometres southeast of the confluence of the Chukachida and Stikine rivers about 268 kilometres northwest of the community of Germansen Landing.

The prospect is situated within a Mesozoic volcanic arc assemblage which lies along the eastern margin of the Intermontane Belt, a northwest-trending belt of Paleozoic to Tertiary sediments, volcanics and intrusions bounded to the east by the Omineca Belt and to the west and southwest by the Sustut and Bowser basins.

Devonian-Permian Asitka Group crystalline limestones are the oldest rocks exposed in the region. They are commonly in thrust contact with Upper Triassic Stuhini Group andesite flows and pyroclastic rocks. These Stuhini rocks have been intruded by plutons and other bodies of the mainly granodiorite to quartz monzonite Early Jurassic Black Lake Suite and are in turn unconformably overlain by or faulted against Lower Jurassic calcalkaline volcanics of the Toodoggone Formation (Hazelton Group).

The dominant structures in the area are steeply dipping faults which define a prominent regional northwest structural fabric trending 140 to 170 degrees. In turn, high angle, northeast-striking faults (approximately 060 degrees) appear to truncate and displace northwest-striking faults. Collectively these faults form a boundary for variably rotated and tilted blocks underlain by monoclinal strata.

The DM prospect is comprised of two areas of mineralization: the DM zone and, 800 metres to the south-southeast, the JR zone. At both zones chalcopyrite, galena, tetrahedrite and pyrite occur in quartz-calcite-(barite) veins and veinlets hosted within argillically altered and brecciated Stuhini Group siliceous andesites and basalts. Locally malachite and limonite are well developed, especially along fracture surfaces. The DM zone is exposed in outcrops over an 80 by 50 metre area.

A grab sample (sample DM-103 on Fred 4 claim, Assessment Report 18465) of a quartz-calcite vein containing 10 per cent combined disseminated galena and tetrahedrite, assayed 1480 grams per tonne silver and 0.2 gram per tonne gold. A grab sample (sample JR-62 on Fred 4 claim, Assessment Report 18465) collected from a 15-centimetre-wide quartz-breccia vein on the JR zone assayed 1.1 grams per tonne gold and 36 grams per tonne silver.

Work History

In 1986, Prolific Resources Ltd. completed a reconnaissance stream silt sampling program on the Stik 5 and Fred 1 claim. A brief reconnaissance geological mapping and prospecting program was carried out on these claims in 1987.

In 1988, on behalf of Prolific Resources Ltd., a field exploration program was completed on their 'Toodoggone' properties comprising the Stik, Fred, Adoog, Doog, Jim and Mike claims. The objective of the program was to locate and evaluate the gold potential of epithermal quartz breccia systems on the claims. Exploration consisted of extensive prospecting, geological mapping, lithogeochemical sampling (355 rock), hand trenching (1 trench, 19 metres), and soil sampling (722).

Bibliography
EMPR GEM 1969-103; 1971-63-71; 1973-456-463
EMPR EXPL 1975-E163-E167; 1976-E175-E177; 1977-E216-E217; 1978-E244-E246; 1979-265-267; 1980-421-436; 1982-330-345; 1983-475-488; 1984-348-357; 1985-C349-C362; 1986-C388-C414; 1987-C328-C346; 1988-C185-C194
EMPR FIELDWORK 1980, pp. 124-129; 1981, pp. 122-129, 135-141; 1982, pp. 125-127; 1983, pp. 137-138, 142-148; 1984, pp. 139-145, 291-293; 1985, pp. 299-300; 1986, pp. 167-174; 1987, pp. 111, 114-115; 1989, pp. 409-415; 1991, pp. 207-216
EMPR BULL 86
EMPR ASS RPT 15616, 17247, *18465
EMPR MAP 61 (1985); 65 (1989)
EMPR PF (Photogeologic Interpretation Map of the Northern Omineca area, Oct. 1964, Canadian Superior Exploration Limited-in 94E General File)
EMPR GEOLOGY 1977-1981, pp. 156-161
EMPR PFD 901990
GSC BULL 270
GSC OF 306; 483
GSC P 76-1A, pp. 87-90; 80-1A, pp. 27-32; 80-1B, pp. 207-211
GSC MAP 14-1973
W MINER April, 1982
N MINER Oct.13, 1986
N MINER MAG March 1988, p. 1
GCNL #23(Feb.1), 1985; #165(Aug.27), 1986
IPDM Nov/Dec 1983
ECON GEOL Vol. 86, pp. 529-554, 1991
MIN REV September/October, 1982; July/August, 1986
WIN Vol. 1, #7, June 1987
Forster, D.B. (1984): Geology, Petrology and Precious Metal Mineralization, Toodoggone River Area, North-Central British Columbia, Unpub. Ph.D. Thesis, University of British Columbia
Diakow, L.J. (1990): Volcanism and Evolution of the Early and Middle Jurassic Toodoggone Formation, Toodoggone Mining District, British Columbia, Ph.D. Thesis, University of Western Ontario

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