Very rare. Second oxidation zone (35 Level).
- 2nd Oxidation Zone
White leightonite crystals are associated with chalcanthite, lammerite, anhydrite and ferroan thometzekite on 35 Level (Gebhard, 1999). Keller and Bartelke (1982) reported almost the same assemblage (minus the thometzekite) specifically from the "North-East Stope" on 35 Level.
Paragenetic and General Notes
Leightonite occurs with anhydrite and the two minerals are readily confused; however, anhydrite can be distinguished from leightonite by the former's perfect cleavage.