Carrollite - image 1

Carrollite

Unknown Owner
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Though well known now, carrollite used to be quite uncommon until the finds in the DRC in the 1990s. Carrollite is a rare copper, cobalt, nickel sulfide, with the very finest of the species coming from the DRC. This excellent intergrown thumbnail is sharp, well-defined, and has a bright metallic luster. From the collection of Paul Otto.

Product details

SpeciesCarrollite
SizeThumbnail
Dimensions2.4 x 2.2 x 1.6 cm
Added on10/23/2024
LocalityDR Congo, Haut-Katanga, Kamoya South II Mine

Known provenance

DateCollectorAcquisition price
08/2024Unknown OwnerNot disclosed
—The ArkenstoneNot disclosed

Learn more

Mineral guide
Learn about Carrollite
cobalt-rich thiospinel with razor-sharp spinel-octahedral crystals, mirror luster, on contrasting carbonate matrices from the DRC and Bou Azzer.
Carrollite
Regional guide
Carrollite from Kamoya South II Mine, DR Congo
Kamoya South II is the modern benchmark locality for carrollite. Its best specimens have the look that made the species famous among contemporary sulfide collectors: brilliant silver to steel-gray crystals, often mirror-faced, with crisp spinel-family geometry set into pale calcite or dolomitic carbonate. The visual effect is unusually clean for a sulfide—hard, metallic geometry against light matrix—and the finest examples have enough reflectivity that the faces flash like cut metal when turned under a lamp.