Biehlite

Biehlite is an exceptionally rare mineral, an antimony arsenic bearing molybdate with formula [(Sb,As)O]₂MoO₄. It comes from Tsumeb.^[3][2][4]

Biehlite
Biehlite, from Tsumeb, Namibia
General
Category	Oxide minerals
Formula	[(Sb,As)O]2MoO4
IMA symbol	Bhl[1]
Strunz classification	4.DB.60
Crystal system	Monoclinic
Crystal class	Prismatic (2/m) (same H-M symbol)
Space group	C2/c
Identification
Color	white
Luster	vitreous, silky
Streak	white
References	[2]