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Fluornatromicrolite

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SER567591

Fluornatromicrolite

Type Locality

Description Tabs

Description
Locality: 
Quixaba Pegmatite, Frei Martinho, Borborema Province, Paraiba, Brazil
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 3.1 × 2.1 cm
Description

An emerald green crystal on matrix from the type locality; there is a little chip but I never saw a so big and trasparent crystal of this rare specie

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