Xanthoconite

Xanthoconite is a sulfosalt mineral with the chemical formula Ag₃AsS₃.

Xanthoconite
Xanthoconite from Imiter Mine, Boumalne-Dadès, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
General
Category	Sulfosalt mineral
Formula	Ag3AsS3
IMA symbol	Xcn[1]
Strunz classification	2.GA.10
Crystal system	Monoclinic
Crystal class	Prismatic (2/m) (same H-M symbol)
Space group	C2/c
Identification
Formula mass	494.72 g/mol
Color	Red-orange; Lemon yellow
Mohs scale hardness	2.5–3.0
Luster	Adamantine
Diaphaneity	Subtranslucent – opaque
Specific gravity	5.54, range 5.5–5.6
References	[2][3]