Cobaltoan Calcite Natural Mineral - Kakanda South Mine Katanga Copper Zone Congo Size-5.5cm x 5cm x 1.1cm Weight-56g You will receive the item in the photo Cobaltoan calcite often called cobaltocalcite is a vibrant pink variety of the common calcium carbonate mineral. Mineral class: carbonate. It is a variety of calcite where a portion of the calcium ions is substituted by cobalt, and yielding the characteristic pink or purple-pink hue.Crystal system: Hexagonal (trigonal) crystal system. It frequently display’s rhombohedral or scalenohedral crystal habits,often forming as sparking druzy crusts or rounded Botryoidal clusters over a matrix.Rock formation: It typically precipitates at a relatively low temperatures in oxidizing environments where cobalt rich nickel zinc or copper bearing hydrothermal fluids percolate through host rocks. It is frequently found in mineral veins or as a secondary coating on matrix rocks like limonite or iron oxides. Hardness: measures 3 on the MOHs scale.
