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Fluornatromicrolite

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MEX727621

Fluornatromicrolite

R.Wegner, Co-Author of type describtion
Type Locality

Description Tabs

Description
Locality: 
Quixaba Mine, Frei Martinho, Paraiba, Brazil
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 1.2 × 0.5 cm
Description

Two free crystallized crystals of this very rare mineral with brown and dark green internal reflections.
 

Mineral Data
What's on the rock

Fluornatromicrolite

Formula: 
(Na,Ca,Bi)2Ta2O6F
Strunz: 
4.DH.15
Crystal System: 
Isometric
Hardness: 
5.0 - 0.0
Colour: 
Green
Streak: 
White
Type Locality: 
Quixaba pegmatite, Quixaba, Frei Martinho, Borborema mineral province, Paraíba, Brazil
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