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Sulfide

Grimmite

NiCo₂S₄
Crystal systemCubic
ClassSulfide
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Grimmite specimen

Mineral assemblage and textural features of the studied grimmite-bearing sample on BSE images. Skutterudite (Sku) cut by a grimmite (Gr) veinlet containing abundant xenomorphic inclusions of jaipurite (J). The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( https://creativecommons.org/licenses/by/4.0/ ). — Photo: Pavel Škácha, Jiří Sejkora, Jakub Plášil, Zdeněk Dolníček and Jana Ulmanová · CC BY 4.0

Grimmite

Grimmite is an IMA-recognized mineral species in the sulfide class, with the chemical formula NiCo₂S₄.

It crystallizes in the cubic crystal system (space group Fd3m). It is a member of the Spinel structural group.

IMA symbol Gmm, IMA status: approved, named in 2020.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more G minerals or help write this entry.