Niningerite
A magnesium-dominant sulfide of enstatite chondrite meteorites — the magnesium analogue of keilite.
Intro adapted from Wikipedia (CC BY-SA).
Niningerite is an IMA-recognized mineral species in the sulfide class, with the chemical formula MgS.
It crystallizes in the cubic crystal system (space group Fm3m). It is a member of the Rocksalt structural group.
Key properties: Metallic. R: n.d luster.
IMA symbol Nng, IMA status: approved, named in 1966.
Found in less extensively metamorphosed enstatite chondrite meteorites.
It is found associated with “Nickel-iron” (kamacite), troilite.
In honor of Harvey Harlow Nininger (1887–1986), of Sedona, Arizona, USA, for his contributions to meteoritics.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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