Extremely rare. Second oxidation zone (30 Level).
- 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).