Chemistry:Niningerite

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Niningerite
General
CategorySulfide minerals
Formula
(repeating unit)
MgS
Strunz classification2.CD.10
Crystal systemCubic
Crystal classHexoctahedral (m3m)
H-M symbol: (4/m 3 2/m)
Space groupFm3m
Unit cella = 5.2 Å; Z = 4
Identification
Colorgrey
Mohs scale hardness3 12 - 4
|re|er}}metallic
Diaphaneityopaque

Niningerite is a magnesium-iron-manganese sulfide mineral with the chemical formula MgS that is found in enstatite chondrite meteorites.[2] Niningerite is the magnesium-dominant analog of keilite.[3] This mineral is named after Harvey H. Nininger.

See also

References