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Dravite

Type Locality
Dobrova, Dravograd (Unterdrauburg), Slovenia
Mineral Data
Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Physical Properties
Crystal System: 
Trigonal
Hardness: 
7.0
Tenacity: 
brittle
Synonyms
Synonyms: 
Dravite - and Dravita
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