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Klockmannite: CuSe
Comments: Klockmannite intergrown with covellite on quartz. Location: Lichtenberg Mine, Ronneburg U Deposit, Gera district, Thuringia, Germany. Scale: Picture size 7.5 mm. © Thomas Witzke / Abraxas-Verlag
Klockmannite: CuSe Fischesserite: Ag3AuSe2
Comments: Pinkish-grey fischesserite (Fl) with fine-grained bluish-grey klockmannite (Kl) and grey clausthalite (Cl). Polished section from microprobe analysis in reflected light, parallel nicols. Location: Predborice, Bohemia, Czech Republic. Scale: Picture size 0.7 mm. © Thomas Witzke