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BETAFITE [1 record]

Record 1 2012-04-13

English

Subject field(s)
  • Mineralogy
DEF

A mineral consisting of an oxide of niobium, titanium and uranium occurring as greenish black isometric crystals near Betafo, Madagascar.

CONT

Betafite ... is a Ti[titanium]-rich member of the pyrochlore group and does not readily release uranium with acid, even in an oxidized state.

French

Domaine(s)
  • Minéralogie
DEF

Minéral (oxyde) fortement radioactif, du système cristallin cubique, se présentant en cristaux octaédriques ou dodécaédriques [...] de couleur brun verdâtre ou jaune à noir suivant les variétés.

CONT

Minéraux uranifères des terres rares : Ce sont des oxydes complexes parmi lesquels on retrouve ceux d'uranium. À ce groupe, on range : la bétafite, l'euxénite, [...] la davidite, la brannérite.

OBS

Étymologie : de la mine Betafo (Madagascar).

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Niobotantalato de uranio que se beneficia en Madagascar como mena de este metal.

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