Calcite (Cobalt-rich)
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Calcite (cobalt-rich), 2.9 cm, from the Mashamba West mine, Kolwezi, Kolwezi mining district, Lualaba, Katanga, Democratic Republic of Congo. Illustrated in Minerals: The Collectors Newspaper (2014). Ex Cal Graeber, ex Ken Roberts collection; Mark Mauthner photo.
Product details
Species
SizeMiniature
Dimensions2.9 cm
Added on02/13/2026
Locality
Publications
- Mineralogical Record Refined Elegance page 150
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| — | Ken Roberts | Not disclosed |
| — | Cal Graeber | Not disclosed |
Learn more
Mineral guide
Learn about Cobalt
native metal prized for rarity and steel-gray luster, with bold contrasts to erythrite or calcite; Bou Azzer and Schneeberg stand out.Regional guide
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