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Uranocircite

Uranocircite-51177.jpg
Uranocircite

General
Category Phosphate mineral

Formula
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(repeating unit)
Ba(UO2)2(PO4)2·10H2O
Strunz classification 8.EB.05
Crystal system Tetragonal
Crystal class Ditetragonal dipyramidal (4/mmm)
H-M symbol: (4/m 2/m 2/m)
Space group I4/mmm
Unit cell a = 7.01, c = 20.46 [Å]; Z = 2
Identification
References
[1][2]

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.



References





  1. ^ http://www.mindat.org/min-4105.html Mindat


  2. ^ https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Uranocircite-II Mineralienatlas



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