Minerals Title Bar

Crocoite Sample

 

Crocoite
 


Chemical Composition: PbCrO4 
Group:
System: Monoclinic 
Family: Sulphates 
Hardness: 2.5 - 3 


  • Prismatic crystals, sometimes striated 
  • Crystals often hollow 
  • Very heavy, fragile 
  • Poor cleavage 
  • Translucent 
  • Slightly greasy adamantine luster 
  • Fuses easily 
  • Dissolves in strong acids 
  • Specific gravity: 5.9-6.1 
  • Found in: Brazil, France, Philippines, Tasmania, USA 
  • Chromium was first extracted from this mineral 
  • Very rare