Kalininite (ZnCr2S4) is a thiospinel mineral found in Russia in 1985 in the Pereval Marble Quarry, Slyudyanka (Sludyanka), Lake Baikal area, Irkutskaya Oblast’, Prebaikalia (Pribaikal’e), Eastern-Siberian Region. It is an isometric-hexoctahedral black mineral containing chromium, sulfur, and zinc. It was named for P. V. Kalinin, Russian mineralogist, and petrologist, investigator of the southern Baikal region.
General Information
- Formula: ZnCr2S4
- Hardness: 5
- Member of: Linnaeite Group.
- Common Impurities: Cu, V, Sb
Fig: Kalininite
Properties
- Color: Black.
- Diaphaneity: Opaque
- Hardness: 5 – Apatite
- Luster: Adamantine
Occurrence: In a garnet-pyroxene mixture in diopside-quartz-calcite rocks.
Association: Karelianite, eskolaite, diopside, quartz, calcite, barite, zircon, chromian-vanadian tremolite, goldmanite–uvarovite, pyrite.
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