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Dumortierite

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SER659324

Dumortierite

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Description
Locality: 
Vaca Morta Quarry, Serra da Vereda, Boquira, Bahia, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1 × 0.9 cm
Description

A loose single quartz crystal hosting several blue elongated crystals of dumortierite

Mineral Data
What's on the rock

Dumortierite

Formula: 
(Al,Fe3+)7(SiO4)3(BO3)O3
Strunz: 
9.AJ.10
Crystal System: 
Orthorhombic
Hardness: 
7.0 - 8.0
Type Locality: 
Ducarre's Quarry, Beaunant, Chaponost, Rhône, Rhône-Alpes, France...