Very small amounts of blende (zinc sulphide) and chalcopyrite (copper-iron sulphide) were found in the deeper levels, but never in workable quantities.
en.wikipedia.org The minerals identified at the site include: haematite, chalcopyrite, tennantite, galena, tetrahedrite, bornite, pyrite, marcasite, enargite and sphalerite.
en.wikipedia.org A selective flotation step separates the molybdenite (molybdenum disulfide) from the chalcopyrite.
en.wikipedia.org This sulfide mineral (usually pentlandite, pyrite, chalcopyrite or pyrrhotite) gains platinum by mixing with the bulk of the magma because platinum is chalcophile and is concentrated in sulfides.
en.wikipedia.org Two types of mineralization exist, one type being auriferous quartz-carbonate veins with combinations of pyrite, galena, sphalerite and chalcopyrite present.
en.wikipedia.org