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The Kupol'noe Sn-Ag deposit, Sakha, Russia: Mineral assemblages, fluid inclusion and stable isotope (S, O, and C) studies
Published in Adam Piestrzyński, Mineral Deposits at the Beginning of the 21st Century, 2001
G. N. Gamyanin, V. V. Alpatov, N. S. Bortnikov, E. Yu. Anikina, A. S. Borisenko, A. A. Borovikov
About 40 mineral species were recorded in ores of the deposit at course microscopic and EPMA studies. Quartz and carbonates prevail (>30%). Majority (5-10%) opaque minerals are galena, sphalerite, and pyrite. Common sulfides are arsenopyrite, chalcopyrite, stannite, marcasite, pyrrhotite, and stibnite. Segregations of sulfosalt minerals were observed. Their amount is averaged not more 2%. Sulfosalt minerals found are freibergite, stephanite, pyrargyrite, miargyrite, chalcostibite, boulangerite, jamesonite, gustavite, andorite, owyheeite, diaphonie, and franckeite. Rare minerals are cassiterite, wolframite, berthierite, gudmundite, canfieldite, and hocartite.
Rejection of antimony and bismuth in sulphide flotation – a literature review
Published in Mineral Processing and Extractive Metallurgy, 2021
Leanne Kathleen Smith, Warren John Bruckard, Graham Jeffrey Sparrow
Often tetrahedrite contains significant silver such that argentiferous tetrahedrite (freibergite, (Cu,Ag)12Sb4S13) can be a valuable mineral recovered for its silver content, or it is a contaminant in copper concentrates because of its antimony (and possibly arsenic and mercury) content. In the latter case, to reduce the antimony content of the copper concentrate, tetrahedrite needs to be depressed. The copper content of tetrahedrite is, however, as high as that of chalcopyrite, the main copper bearing mineral in many copper ores. This conflict may be resolved by making a separate tetrahedrite concentrate (Byrne et al. 1995), or by accepting a high antimony content in the copper concentrate in return for the additional copper and silver content.