Spertiniite

Spertiniite


Composition: Cu(OH)2
Crystal System : Orthorhombic
Colours: Colourless, dark-blue
Lustre : Vitreous
Hardness (H) : Soft
Specific Gravity (S.G) : 3.93
References: Gebhard (1999)

Distribution

Extremely rare. Second oxidation zone (30 Level).

Occurrence

  • Supergene
  • 2nd Oxidation Zone

Paragenetic and General Notes

Gebhard (1999) reported that only a single specimen of spertinite is known, from 30 Level, comprising tiny, deep-blue needles of spertinite forming radial aggregates in cracks in tennantite ore, associated with keyite, adamite-olivenite, gypsum and tsumcorite (see also Von Bezing, 2007).

Spertiniite has subsequently been identified and verified on a druse of calcite, in a specimen from the William (Bill) Pinch collection (www.williampinch.com; accessed July 2015).