Camsell River area, Northwest Territories, Canada

Polymetallic veins cut volcanic rocks of the Aphebian Great Bear Batholith.

Major Minerals:

Uraninite, haematite, niccolite, rammelsbergite, safflorite, lollingite, skutterudite, maucherite, cobaltite, arsenopyrite, gersdorffite, glaucodot, native silver, native bismuth, bismuthinite, galena, sphalerite, pyrite, chalcopyrite, acanthite, stephanite, polybasite, matildite, tetrahedrite

Minor Minerals:

Pyrrhotite, pentlandite, emplectite, pavonite, pyrargyrite, chalcocite, stibnite, marcasite

Trace Minerals:

Include other sulphosalts, bornite


Botryoidal haematite is associated with quartz and carbonates. Silver mineralization is associated with nickel-cobalt-iron arsenides. Native silver forms Marienberg Crosses within the cores of niccolite which itself is successively overgrown by rammelsbergite, safflorite and lollingite. The arsenides have thin, optical and compositional zoning together with an overall zoning from nickel-rich cores to cobalt-rich rims. Native bismuth replaces cobalt-iron arsenides and is associated with bismuthinite. Silver sulphosalts form very fine intergrowths associated with bismuth and bismuthinite and they also replace cobalt-iron arsenides. The mineralization is polyphase.


Badham, 1975; Changkakoti and Morton, 1986