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Dumortierite & Quartz

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GMA823885

Dumortierite & Quartz

Classic Locality

Description Tabs

Description
Locality: 
Vaca Morta Quarry, Serra da Vereda, Boquira, Bahia, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.1 × 1 cm
Description

Superb neon blue dumortierite inclusions in clear quartz crystal. The sprays of the borosilicate mineral are sitting in the bottom of the quartz giving an „aquarium” appearance of this lovely thumbnail.

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...

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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