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Thorianite

Thorianite
Catégorie IV : oxydes et hydroxydes[1]
Image illustrative de l’article Thorianite
Cristaux de thorianite de Madagascar (1,6 x 1,4 x 1,3 cm)
Général
Classe de Strunz
Formule chimique O2Th ThO2
Identification
Masse formulaire[2] 264,0369 ± 0,0006 uma
O 12,12 %, Th 87,88 %,

Unités du SI & CNTP, sauf indication contraire.

La thorianite est un minéral formé d'oxyde de thorium ThO2 avec des traces de U, Ce, La, Pb et terres rares.

  • Aldanite, une variété contenant de 14,9 à 29,0 % de UO2 et 11,2 à 12,5 % de PbO[3] ;
  • Uranothorianite[4].

Notes et références

[modifier | modifier le code]
  1. La classification des minéraux choisie est celle de Strunz, à l'exception des polymorphes de la silice, qui sont classés parmi les silicates.
  2. Masse molaire calculée d’après « Atomic weights of the elements 2007 », sur www.chem.qmul.ac.uk.
  3. M.M. Bespalov, « On discovery of a new mineral of the thorianite group [in Russian] », Sovietskaya Geologiya, vol. II, no 6,‎ , p. 105–107
  4. « Uranothorianite mineral information and data » (consulté le )

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Thorianite
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