In addition to uraninite it occurs associated with the rare minerals becquerelite, masuyite, schoepite, kasolite, curite, boltwoodite, vandendriesscheite, billietite, metatorbernite, fourmarierite, studtite and sklodowskite.
2.
When exposed to air schoepite converts over a short time to the metaschoepite form ( UO 3 " nH 2 O, n < 2 ) within a few months of being exposed to ambient air.
3.
"' Schoepite "', empirical formula ( UO 2 ) 8 O 2 ( OH ) 12 " 12 ( H 2 O ) is a rare alteration product of uraninite in hydrothermal uranium deposits.
4.
In pure water, schoepite { ( UO 2 ) 8 O 2 ( OH ) 12.12 ( H 2 O ) } is formed in the first week and then after four months studtite { ( UO 2 ) O 2 ? ( H 2 O ) } was formed.
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