Realgar


Composition: As4S4
Crystal System : Monoclinic
Colours: Orange-red
Lustre : Resinous, greasy
Hardness (H) : 1.5-2.0
Specific Gravity (S.G) : 3.56
References: Biehl (1919)

  

Distribution

Extremely rare. First oxidation zone.

Occurrence

  • Supergene
  • 1st Oxidation Zone

Paragenetic and General Notes

Reported by Biehl (1919) as red inclusions in massive lead and copper arsenates in the upper levels. Keller (1984) considers it a very rare secondary mineral.