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Torbernite is occasionally found as a coating on the walls of crevices in rocks. It occurs in Cornwall, England; at Scheeberg, Germany; at Joachimsthal, in the Czech Republic, Congo, Africa and at many other places where other uranium minerals exist. It is probably in all cases a secondary product of weathering. Containing 61.2 per cent uranium trioxide, it is a minor ore of uranium. Attractive coloration and crystallization make it desirable as a mineral collector specimen.
Pastel green/blue square tabular crystals from 1-2mm. Excellent specimen.
Locality
Contencas mine, Portugal
Tagged
phosphate , copper
Radioactive!!
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