Philipsbornite

Philipsbornite


Composition: PbAl3(AsO4)2(OH)5.H2O
Crystal System : Trigonal
Colours: Colourless, greyish-green
Lustre : Vitreous
Hardness (H) : 4.5
Specific Gravity (S.G) : 4.45
References: Keller (1984)

Distribution

Very rare. First and second (?) oxidation zones.

Occurrence

  • Supergene
  • 1st Oxidation Zone
  • 2nd Oxidation Zone

Paragenetic and General Notes

Keller (1984) observed philipsbornite as colourless pseudo-cubic and pseudo-octahedral crystals with tsumcorite, quartz and hematite, and with azurite.