Niningerite

General
Category Sulfide minerals
Formula
(repeating unit)
MnS
Strunz classification 02.CD.10
Crystal symmetry isometric
Unit cell a = 5.2 Å
Identification
Color grey
Mohs scale hardness 3½ - 4
Luster metallic
Diaphaneity opaque

Niningerite is a magnesium-iron-manganese sulfide mineral with the chemical formula MnS that is found in enstatite chondrite meteorites.[1] Niningerite is the magnesium-dominant analog of keilite.[2] This mineral is named after Harvey H. Nininger.

See also

References