The unnamed Zn-analog of argentotetrahedrite-(Fe) was identified via EMPA, yielding the empirical formula of (Ag5.69Cu4.35)10.04 (Zn1.13Fe0.73)1.86 Sb4.09 S13.01. It is labelled as FRB in the image, previously identified as freibergite which also has been analytically confirmed at the locality, field collected there by N. Rudashevsky. The overall ...
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