Extract from MINFILE No 093M 079:
The Laura property is located near the head of Sterritt Creek 32 kilometres north of Hazelton.
The Laura stock, a two-phase subcircular granodioritic plug of the Late Cretaceous Bulkley Intrusions, cuts sandstones and siltstones of the Middle Jurassic to Lower Cretaceous Bowser Lake Group. Peripheral inward-dipping dikes, related to the earlier phase of the stock, suggest a ring dike or funnel shape for the intrusive complex as a whole (Assessment Report 7071) which has hornfelsed the Bowser Lake Group sedimentary rocks. A potassium/argon date on biotite yielded a date of 82 million years (Geological Survey of Canada Open File 2322).
Low-grade molybdenum, copper and tungsten mineralization is widespread in the granodiorite and locally in the hornfelsed sedimentary rocks adjacent to the stock. The best grades are in the margins of the stock.
Four stages of mineralization are evident. An early disseminated and fracture-controlled pyrite mineralization with minor chalcopyrite and amphibole was succeeded by a quartz vein stockwork carrying pyrite, chalcopyrite and molybdenite. The third phase consists of hairline quartz veins with pyrite, pyrrhotite, molybdenite and chalcopyrite and finally, widely-spaced late vuggy flat-lying quartz-carbonate-feldspar veins carrying pyrite, arsenopyrite, sphalerite, chalcopyrite and locally jamesonite and stibnite.
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