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File Created: 12-Feb-1986 by Eileen Van der Flier Keller (EVFK)
Last Edit:  22-Sep-2015 by Janet M. Riddell (JMR)

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Name SUKUNKA RIVER Mining Division Liard
BCGS Map 093P022
Status Developed Prospect NTS Map 093P05E
Latitude 055º 18' 00'' UTM 10 (NAD 83)
Longitude 121º 38' 50'' Northing 6129010
Easting 585886
Commodities Coal Deposit Types A04 : Bituminous coal
Tectonic Belt Foreland Terrane Overlap Assemblage
Capsule Geology

Potentially mineable coal seams occur in the Lower and Upper Gething Formation and the Gates Formation of the Bullhead and Fort St. John groups respectively. Coal was also encountered in the Juro-Cretaceous Minnes Group however thicknesses do not appear to be significant.

The Lower Gething Formation contains up to 4 seams of potential commercial thickness varying from 0.6 to 6.1 metres of which the middle seam is the thickest at 6.1 metres. These coals contain carbonaceous shale bands and have fairly high inherent ash content. The Upper Gething Formation also contains four main seams; the Bird A and B, 2.4 and 3.9 metres thick respectively, Skeeter, 2.4 metres thick and Chamberlain, 3.0 metres thick. The Gething Formation has an average thickness of 472 metres and consists of an interbedded sequence of sandstone, siltstone, carbonaceous mudstone and coal.

The Moosebar Formation (Fort St. John Group) is 122 metres thick and consists of greenish siltstone and shales and separates the Gething Formation from the Gates Formation. The Gates Formation is approximately 289 metres thick and consists of massive, fine-grained sandstone with interbedded shale, siltstone and four main coal seams, the A seam (1.5 metres), the B seam (5.1 metres), the C seam (4.5 metres) and the D seam (1.5 metres).

The sulphur content of the coals in the entire area is less than 0.4 per cent. Ash content is variable, however in a representative sample, ash content is 20.2 per cent with values as low as 8 per cent and 4 per cent for better parts of the seams.

The structure of the area consists of asymmetrical, northwest trending folds with numerous southwesterly dipping thrust faults. The most north-easterly mapped thrust is thought to be the local "Sole" fault. Other splays from it converge at depth. The "Sole" fault dips are steeper to the northeast than to the southwest. The Nuisance fault is the main fault along the Sukunka River to the northwest.

The property was explored extensively by Master Exploration and Manalta Coal with mapping, trenching and drilling from 1971 to 1978.

Surface coal reserve recoverable at a ratio of 7 cubic yards of overburden per ton of coal total 7 million tonnes (Coal Assessment Report 677, page 2).

EMPR COAL ASS RPT 665, *672, *673, *674, 675, 676, 677
EMPR Coal in British Columbia (1976)
EMPR P *1981-3; 1986-3, pp. 18-20
EMPR EXPL 1975-E226,E227; 1977-E272,E273; 1978-E309,E310; 1979-357, 358; 1980-560,566,567
EMPR FIELDWORK 1977, p. 60; 1978, p. 86; 1981, pp. 244-258; 1984, pp. 251-277; 1986, pp. 369-372,379-382; 1987, pp. 451-470; 1988, pp. 565-576; 1990, pp. 407-414
EMPR GEM *1969-423-425; 1970-525,526; 1971-498,499,501,502; 1972-640,641; 1973-586; 1974-423,424
EMPR PF (093P General - Mathews, W.H. (1950,1952,1954,1955): Various reports on the Peace River District; Map of Dawson Creek area showing leases, wells and seismic surveys; General surficial and bedrock geology maps; Preliminary Feasibility Report on Townsite Community Development (1977))
EMPR PF Rimfire (Brameda Resources (1969): Topography map of Sukunka River area)
GSC BULL 132; 152; 219; 250; 259; 328
GSC MAP 19-1961; 2669
GSC OF 286
GSC P 60-16; 61-10; 69-1A, pp. 244,245; 70-1A, pp. 238,239; *89-4, pp. 1-29,50,51,58-63
CIM March 1974, pp. 142-147