Abstract

Small metallic plates and scales of native Zn occur in the oxidized lodes at the Elsa mine, Keno Hill, Yukon. It is associated with native Ag, limonite, manganese oxides, cerussite, anglesite, S, and oxidized sphalerite, freibergite, and galena. X-ray fluorescence and spectrographic analysis show it to contain up to 10% Sn, Pb, and Cd, and traces of Fe, Mn, B, Si, Cu, Ag, Ca, and Ba. The Zn comes from sphalerite by organic compound reduction or auto-oxidation in a neutral to alkaline environment.

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