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Coutinhoite

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JYJ896135

Coutinhoite

Description Tabs

Description
Locality: 
Galileia, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.9 × 0.7 × 0.2 cm
Description

Thin mica plate with numerous coutinhoite inclusions. Associated minerals are phosphuranylite, weeksite and muscovite. 

Ex Wim & Tony Klein specimen. 

 

Mineral Data
What's on the rock

Coutinhoite

Formula: 
ThxBa(1-2x)(UO2)2Si5O13·(H2O)1+y (0 < x < 0.5 and 0 < y < (2+x))
Strunz: 
9.AK.30
Hardness: 
2.0 - 0.0
Colour: 
yellow
Streak: 
yellow
Type Locality: 
Urucum mine (Tim mine; Córrego do Urucum pegmatite), Galiléia, Doce valley, Minas Gerais, Brazil