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Routhierite 
Summary
Routhierite is a rare thallium sulfosalt mineral with formula Tl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6.
| Routhierite | |
|---|---|
 Routhierite cristals (red). | |
| General | |
| Category | Sulfosalt mineral |
| Formula (repeating unit) | Tl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6 |
| IMA symbol | Rtr[1] |
| 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 | [2][3][4] |
It was first described in 1974 for an occurrence in the Jas Roux deposit in the French Alps.[3] It was named after French geologist Pierre Routhier (1916–2008).[5] It is also reported from the Northern Ural Mountains, Russia and the Thunder Bay district of Ontario, Canada.[2]
References edit
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ 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