Mottramite
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Mottramite is an orthorhombic anhydrous vanadate hydroxide mineral, PbCu, at the copper end of the descloizite subgroup. It was formerly called cuprodescloizite or psittacinite. Duhamelite is a calciu
Mottramite (green) with chrysocolla (blue) from Mono County, California, US
Orange wulfenite on dark grey mottramite from Gila County, Arizona, USA
Calcite (white) covered by green mottramite from Tsumeb, Namibia
Calcite
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Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate. It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on the Mohs scale o
Rhombohedral calcite
Scalenohedral calcite
Prismatic calcite
Prismatic calcite