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Pyrochlore Var Betafite

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PDM592045

Pyrochlore Var Betafite

Classic Locality

Description Tabs

Description
Locality: 
Ambatofotsy, Itasy, Madagascar
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.5 × 1.3 cm
Description

Sharp crystal of betafite (now considered a variety of pyroclore), with dominant octahedron modified by the rhombododecahedron. It comes with two older labels, one from the Istituto Geo-Mineralogico Italiano (Milan), that received it as donation from Lacroix.

Mineral Data
What's on the rock

Pyrochlore

Synonym Of: 

Pyrochlore Group

Formula: 
A2Nb2(O,OH)6Z
Strunz: 
4
Hardness: 
5 - 5.5
Group Parent: 
Pyrochlore Group

Betafite

Synonym Of: 

Betafite (of Hogarth 1977)

Formula: 
(Ca,U)2(Ti,Nb)2O6(OH)
Strunz: 
4.DH.15
Hardness: 
3.0 - 5.5

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