Routhierite
Appearance
Routhierite | |
---|---|
![]() Routhierite cristals (red). | |
General | |
Category | Sulfosalt mineral |
Formula (repeating unit) | Tl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6 |
Strunz classification | 2.GA.40 |
Crystal system | Tetragonal |
Crystal class | Ditetragonal pyramidal (4mm) H-M symbol: (4mm) |
Space group | I4mm |
Unit cell | a = 9.9821(11), c = 11.3122(12) [Å]; Z = 4 |
Identification | |
Color | Violet-red |
Crystal habit | Anhedral grains, xenomorphic grains and veinlets |
Twinning | Microscopic polysynthetic twin lamellae |
Cleavage | 2; two perpendicular |
Mohs scale hardness | 3.5 |
Luster | Metallic |
Diaphaneity | Opaque |
Density | 5.83 |
Pleochroism | Weak |
References | [1][2][3] |
Routhierite is a rare thallium sulfosalt mineral with formula Tl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6.
It was first described in 1974 for an occurrence in the Jas Roux deposit in the French Alps.[2] It was named after French geologist Pierre Routhier (1916–2008).[4] It is also reported from the Northern Ural Mountains, Russia and the Thunder Bay district of Ontario, Canada.[1]
References
- ^ a b Handbook of Mineralogy
- ^ a b "Routhierite". mindat.org the mineral database.
- ^ Routhierite Mineral Data
- ^ Biography in french (archived)
- "Routhierite". museum of Paris Ecole des mines.
- mineralatlas.com