Gratonite


Composition: Pb9As4S15
Crystal System : Trigonal
Colours: Dark lead-grey
Lustre : Metallic
Hardness : 2.5
Specific Gravity : 6.22

Occurrence

  • Hypogene
  • 2nd Oxidation Zone

Notable Finds

According to Gebhard (1999) a one-time find as microscopic inclusions in sulphide ore.