Skutterudite (mineral)

Skutterudite crystals, a selection of specimens of this crystallized mineral species. Skutterudite is a mineral with many collector’s items presented here with a description, one or more photos and sometimes a video. These skutterudites are for sale.
It is a cobalt and/or nickel arsenate with the chemical formula (Co,Ni)As3 and a cubic crystal system.
The skutterudite group is a group of isostructural minerals comprising four different species: ferroskutterudite (Fe,Co)As3, kieftite CoSb3, nickelskutterudite NiAs2-3 and skutterudite (Co,Fe,Ni)As2-3.

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