Gratonite


Composition: Pb9As4S15
Crystal System : Trigonal
Colours: Dark lead-grey
Lustre : Metallic
Hardness (H) : 2.5
Specific Gravity (S.G) : 6.22

Distribution

Extremely rare. In polished section only. Second oxidation zone, 30 Level.

Occurrence

  • Hypogene
  • 2nd Oxidation Zone

Notable Finds

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