Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Dumortierite

Views:
Watches:
BMM1029399

Dumortierite

Description Tabs

Description
Locality: 
Etemba Farm 135, Dâures, Erongo Region, Namibia
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.8 × 4.1 cm
Description

Attractive blue masses of dumortierite in matrix. This piece comes from an old collection and was acquired in 1968. The old collection label is included.

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...