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Coutinhoite

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Coutinhoite

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Description
Locality: 
Urucum Mine, Galileia, Minas Gerais, Brazil
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 2.9 × 0.3 cm
Description

Yellow coutinhoite on mica

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

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