Uranocircite
A variety of Autunite Group
What is Uranocircite?
Uranocircite or Uranocircite-II is a uranium mineral with the chemical formula: Ba(UO2)2(PO4)2·10H2O. Uranocircite-I was discredited (the IMA-CMNMC published 'The New IMA List of Minerals', September 2012). It is a phosphate mineral which contains barium and is a green to yellow colour. It has a Mohs hardness of about 2. Uranocircite was named after the Greek for "falcon" because it was discovered in Falkenstein, Germany. Uranocircite contains about 45% uranium in it and is mainly mined in Bergen in Saxony, Germany.
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Quick Facts
Physical Properties
- Color
- Yellow-green, yellow; pale canary-yellow in transmitted light.
- Hardness (Mohs)
- 2 - 2.5
- Density
- 3.46 g/cm³
Chemical Properties
- Chemical Formula
- Ba(UO2)2(PO4)2 · 10H2O
- Elements
- Ba, H, O, P, U
Also Known As
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