mineral
Cobaltoan Calcite
Calcite (Cobaltian), (Ca,Co)CO3
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, vibrant magenta to pink color, vitreous to pearly luster, and trigonal crystal system with perfect rhombohedral cleavage.
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Physical properties
Hardness of 3 on the Mohs scale, vibrant magenta to pink color, vitreous to pearly luster, and trigonal crystal system with perfect rhombohedral cleavage.
Formation & geological history
Forms in the oxidized zones of cobalt-bearing ore deposits through secondary low-temperature hydrothermal processes.
Uses & applications
Prized by mineral collectors for its striking pink color and displayed as high-end cabinet specimens.
Geological facts
The intense pink color is caused by the substitution of cobalt for calcium within the crystal lattice. Famous specimens come from the Katanga region in the Democratic Republic of Congo.
Field identification & locations
Easily identified in the field by its distinct magenta-pink color and vigorous effervescence when tested with dilute hydrochloric acid.
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