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Conichalcite: CaCu(AsO4)(OH) Willemite: Zn2SiO4
Comments: Conichalcite with willemite.
Location: Collected from the 30 level of the Tsumeb mine. Tsumeb, Namibia.
Scale: 2.1 x 1.5 cm.
© John Veevaert
Conichalcite: CaCu(AsO4)(OH) Cornubite: Cu5(AsO4)2(OH)4
Comments: Blue green crystalline cornubite alteration of enargite with green conichalcite in white calcite.
Location: Lime Bluff Quarry, Lycoming County, Pennsylvania, USA.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Conichalcite: CaCu(AsO4)(OH) Barahonaite-(Fe): (Ca,Cu,Na,Fe+++,Al )12Fe+++2(AsO4)8(OH,Cl)x·nH2O
Comments: Micro yellow, platy barahonaite-(Fe) crystals associated with green "beads" of conichalcite, yellowish, earthy arseniosiderite and micro olivenite crystals.
Location: Dolores prospect near the village of Pastrana, in the Province of Murcia of southeastern Spain.
Scale: Specimen Size 6 x 4 x 2 cm.
© Tom Loomis / Dakota Matrix