Serb Creek prospect, Omineca Mining Division, British Columbia, Canadai

Regional Level Types
Serb Creek prospect	Prospect
Omineca Mining Division	Mining Division
British Columbia	Province
Canada	Country

The following quote is from B.C. Government site “Minfile”- Minfile No. 093L 083:
“The Serb Creek developed prospect is situated within an Eocene granitic stock of the Nanika Plutonic Suite that intrudes an Early Jurassic granodioritic stock of the Topley Plutonic Suite. These stocks are emplaced with strata of the Lower Jurassic Telkwa Formation, Hazelton Group.
The Serb Creek deposit is associated with a multiphase stock comprising an elongate stock of (porphyritic) biotite granite some 5 kilometres in an east-west direction, a small plug of quartz diorite porphyry and a suite of northwest-trending felsic porphyry and mafic dikes. The biotite granite is the main host to the molybdenite mineralization and cuts a large pluton of leucocratic biotite granodiorite, which in turn intrudes a suite of Hazelton volcanic rocks.
A pyrite halo covers and extends somewhat beyond the granite plug. The low grade molybdenum mineralization is widely distributed within the biotite granite in quartz veins (up to 2 centimetres in width), quartz stockworks and dry fractures. Molybdenite-bearing veins are distributed over a zone some 1300 by 600 metres within which better grade material lies north of the body of quartz diorite porphyry (Main zone) and in a northwest vein and fracture zone to the east (East zone). The veins and veinlets are composed of varying amounts of quartz, pyrite, molybdenite and epidote. Sparse chalcopyrite, galena and sphalerite mineralization are also present. Two types of alteration related to mineralization are sericite-orthoclase-carbonate and epidote-chlorite-orthoclase.
The area of the showings is dominated by a 320 to 330 degree striking fracture system that is evident in the dike swarm, main shears and alteration zone. A late vein system comprised of mainly drusy quartz with calcite hosts galena and sphalerite.
Twenty two drill holes were drilled in 1965, 1966 and 1975 to test the broad zone of molybdenite mineralization exposed throughout the Serb Creek gossan. Molybdenite grade throughout the zone is highly variable, with the best tenors generally concentrated in the Main and East zones
Probable reserves for the Serb Creek property are 41.15 million tonnes grading 0.048 per cent molybdenum (National Mineral Inventory card 93L/12 Mo1). Grade given was 0.08 per cent MoS2; conversion to molybdenum (Mo), using the factor 1.6681.”
Sellmer (1966) studied the deposit for his M.Sc. degree. The listing of the minerals he identified is given below. Much of his thesis has to do with the varying compositions of the feldspar species present in the intrusive rocks, and with the alteration of these rocks. The ferrimolybdite and jarosite were X-ray confirmed.
In addition, Giles Peatfield worked on the property in 1965, and collected material for his B.A.Sc. thesis. Among the specimens he collected were several pieces from narrow, coarsely crystalline quartz veins with trace amounts of pyrite, galena, chalcopyrite and sphalerite – see attached photo. Also present in one specimen (now in the Sutton-Thompson collection at the Pacific Museum of Earth – specimen number 3300) are tiny crystals of wulfenite. At the time of collection, this was the third recorded occurrence of wulfenite in British Columbia.

Giles Peatfield
BASc. (Geological Engineering) University of British Columbia 1966.
PhD Queen's University at Kingston 1978.
Worked for Texas Gulf Sulphur / Texasgulf Inc. / Kidd Creek Mines - 1966 to 1985.
Vancouver based consultant 1982 to retirement in 2016

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References