Larsenite


Composition: PbZnSiO4
Crystal System : Orthorhombic
Colours: White
Lustre : Adamantine
Hardness (H) : 3
Specific Gravity (S.G) : 5.90

Distribution

Extremely rare. Probably from the second oxidation zone.

Occurrence

  • Supergene
  • 2nd Oxidation Zone

Paragenetic and General Notes

Larsenite occurs as white needles (to 1 mm) on willemite, from which it is distinguished with difficulty (Gebhard, 1999).

Keller and Bartelke (1982) described radiating masses of very fine, dull white larsenite fibres (to 2 mm), with queitite and alamosite.  The association with alamosite implies that this is likely a second oxidation zone assemblage.