Very rare. Third oxidation zone, 46 Level.
- 3rd Oxidation Zone
Superb, brown, octahedral crystals to 5 mm were found on 46 Level, in the third oxidation zone, together with siderite and stolzite (Gebhard, 1999).
Paragenetic and General Notes
Scheelite forms a series with powellite (CaMoO4), and crystals of intermediate composition (c. 60% scheelite : 40% powellite) have been analysed recently on a specimen in the collection of Mark Feinglos (personal communication to M.Southwood, September, 2015). These golden-brown, pseudo-octahedral crystals, to a few mm in size, are associated with quartz and fraiponite, on a sulphide matrix.
The specimen illustrated above, from 46 Level in the third oxidation zone, and in the collection of Mariusz Olesczuk, appears to be closer to end-member scheelite, with just a little molybdate indicated from semi-quantitative analysis.