Nichromite [ is a black cubic metallic mineral and member of the spinel group.][ Glossary of Geology] Nichromite was originally reported from the Bon Accord nickel deposit in Barberton District, South Africa.[ Occurring naturally in a nickel deposit, nichromite is named for chromite with dominant nickel.][
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The atomic arrangement of the spinel group is a commonly studied structure and characteristically has four closely packed oxygen atoms. The nickel atoms are organized corresponding to a "normal" spinel arrangement.[Wyckoff, R.W.G. (1965) Crystal Structures (Second Edition). 75-86 p. University of Arizona, Tucson, Arizona.]
The mineral has only been found in the Bon Accord Nickel Deposit in South Africa where it is formed by replacing chromite and rimmed by trevorite.[
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