Kingstonite
Kingstonite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Rh₃S₄.
It crystallizes in the monoclinic crystal system (space group C2/m). It is a member of the Kingstonite structural group.
Key properties: Mohs hardness 6; specific gravity 7.52; Black streak; Metallic luster.
IMA symbol Kgs, IMA status: approved, named in 1993.
Found in placers derived from platinum-bearing dunite and pyroxenite, as inclusions in a Pt-Fe alloy.
It is found associated with Isoferroplatinum, tetraferroplatinum, laurite, bowieite, ferrorhodsite, cuprorhodsite.
The mineral was named to honor Dr. Gordon Andrew Kingston (b. 1939), senior lecturer, Department of Geology, University of Wales, College of Cardiff, Wales, U.K.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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