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Dravite

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PDM813137

Dravite

Description Tabs

Description
Locality: 
Kragerø, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.7 × 2.3 cm
Description

Dark short prismatic, well terminated dravite crystal in a quartz matrix.

Acquired by J.Sibtsen in 1984. Ex Jan Sibtsen #609.

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

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