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Dravite

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ESM872530

Dravite

Description Tabs

Description
Locality: 
Crevoladossola Quarry, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.9 × 0.4 × 0.9 cm
Description

A prismatic yellow-green dravite crystal on matrix  ( For original close-up photo contact us )

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