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Routhierite is a rare thallium sulfosalt mineral with formula Tl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6.

Routhierite
Routhierite.jpg
Routhierite cristals (red).
General
CategorySulfosalt mineral
Formula
(repeating unit)
Tl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6
Strunz classification2.GA.40
Crystal systemTetragonal
Crystal classDitetragonal pyramidal (4mm)
H-M symbol: (4mm)
Space groupI4mm
Unit cella = 9.9821(11),
c = 11.3122(12) [Å]; Z = 4
Identification
ColorViolet-red
Crystal habitAnhedral grains, xenomorphic grains and veinlets
TwinningMicroscopic polysynthetic twin lamellae
Cleavage2; two perpendicular
Mohs scale hardness3.5
LusterMetallic
DiaphaneityOpaque
Density5.83
PleochroismWeak
References[1][2][3]

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]

ReferencesEdit

  1. ^ a b Handbook of Mineralogy
  2. ^ a b "Routhierite". mindat.org the mineral database.
  3. ^ Routhierite Mineral Data
  4. ^ Biography in french (archived)