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Arsenopyrite: FeAsS Siderite: Fe++CO3
Comments: White, metallic arsenopyrite and tan siderite crystals. Location: Panasqueira (2000, 3rd level), in the region of Beira Baixa, Portugal. Scale: 11 x 7 cm. © Fabre Minerals
Arsenopyrite: FeAsS
Comments: Polished section (PPL) showing crystalline aggregate of arsenopyrite (asp) in massive sphalerite (sp), typical of the main sphalerite lens. Location: Giant Kidd Creek Volcanogenic Massive Sulfide deposit, Western Abitibi Subprovince, Timmins, Ontario, Canada. Scale: F.V. = 0.25 mm. © National Resouces of Canada