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  Formula: TlPbAs5S9
  
  Sulphosalt, sulpharsenite, 
  thallium-bearing mineral
  
  Crystal System: Orthorhombic
  
  Specific gravity: 4.6 measured
  
  Hardness: 1½ to 2
  
  Streak: Red
  
  Colour: Scarlet-vermillion to deep cherry-red
  
  Common impurities: Ag,Sb
  
  Environments
  
  Hutchinsonite is of hydrothermal origin. Associated minerals include orpiment, 
  realgar, getchellite, 
  pyrite, sphalerite, 
  hatchite, jentschite, 
  sicherite, edenharterite, 
  bernardite, stalderite, 
  erniggliite and chabournéite  
  (HOM).
  
  Localities
  
  At the type locality, the Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland, hutchinsonite occurs as very small crystals in 
  the white dolomite. Associated minerals include 
  sartorite, rathite and 
  dolomite  
  (Mindat).
  
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