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Dravite In Quartz

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CLB64741

Dravite In Quartz

Ex Bergakademie Technical University Freiberg, Saxony
Classic Locality

Description Tabs

Description
Locality: 
Clay Pit, Eich, Auerbach, Vogtland, Saxony, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
10.7 × 3 × 2.5 cm
Largest Crystal: 
1.60cm
Description

Very rare old material like this almost never shows up. Fine dark red-brown dravite needles (very unusual for this mineral) in crystalline quartz. Was originally wrongly labeled as wolframite.

Mineral Data
What's on the rock

Dravite

Formula: 
Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Crystal System: 
Trigonal
Hardness: 
7.0
Type Locality: 
Dobrova, Dravograd (Unterdrauburg), Slovenia

Quartz

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

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