Mineral Information and Data:

Pierrotite
TlSb3As2S8 [CNMNC approved formula]

Named for Roland Pierrot (1930-), French mineralogist.

IMA status : Approved Species 1970 ()
CLASSIFICATION 
Dana
(8th edition) :
03.08.07.01  
  (03) Sulfides - Sulfosalts
  (03.08) where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.08.07)
  
Nickel-Strunz
(10th edition) :
02.HC.05f
  (02) Sulfides
  (02.H) Sulfosalts of SnS Archetype
  (02.HC) With only Pb
  
Crystal system: Orthorhombic System
Point group (H-M): mm2 — pyramidal
  
  
  

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