Sedimentary exhalative deposits are zinc-lead deposits originally interpreted to have been formed by discharge of metal-bearing basinal fluids onto the seafloor resulting in the precipitation of mainl
Banded massive sulfide (silver-lead-zinc ore) from the SEDEX Sullivan deposit in British Columbia, Canada (Mesoproterozoic, 1470 Ma) showing apparent soft-sediment deformation (field of view: about 3.9 cm across)
Banded ore with chalcopyrite, galena, sphalerite, pyrite from the SEDEX Rammelsberg deposit, Germany
Banded massive sulfide (silver-lead-zinc ore) from the Sullivan Mine, British Columbia, showing apparent soft-sediment deformation. Sullivan mineralization is interpreted to be related to exhalative seafloor deposition.
Chalcopyrite
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Chalcopyrite is a sulfide mineral composed of copper and iron, and the most abundant copper ore mineral. It has the chemical formula CuFeS2 and crystallizes in the tetragonal system. It has a brassy t
Sedimentary exhalative deposits
…the overlying water column, although this may have occurred in some cases. Main ore minerals in SEDEX deposits are fine-grained sphalerite and galena, chalcopyrite is significant in some deposits; silver-bearing sulfosalts are frequent minor constituents; pyrite is always present and can be a minor component or…
Chalcopyrite 199453
Microscopic picture of chalcopyrite
Brass-yellow chalcopyrite crystals below large striated pyrite cubes
Copper-zinc ore sample from a VMS deposit at Potter Mine in Timmins, Ontario, Canada. The brassy-yellow mineral is chalcopyrite- the primary ore mineral at this mine.