Black microcrystals of the extremely rare Cu-Sn sulphide mineral mohnite from one of the very few known localities worldwide (Delamar Mine, Delamar, Lincoln County, Nevada, United States of America) in a whitish contrasting matrix. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Mohite
A greenish-gray triclinic copper-tin sulfide.
Intro adapted from Wikipedia (CC BY-SA).
Mohite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Cu₂SnS₃.
It crystallizes in the triclinic crystal system (space group P1).
Key properties: specific gravity 4.86; Metallic. Anisotropism: Distinct but without color effects. R: (400) —, (420) —, (440) 24.6, (460) 24.7, (480) 25.3 luster.
IMA symbol Moh, IMA status: approved, named in 1981.
Hydrothermal in origin.
It is found associated with Tetrahedrite, famatinite, kuramite, mawsonite, emplectite (Kochbulak deposit, Uzbekistan).
In honor of Professor Günter Harald Moh (1929–1994), University of Heidelberg, Heidelberg, Germany, who first synthesized the compound.