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Dumortierite & Quartz

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GMN1085460

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: 
1.7 × 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 .

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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