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Lazulite

Type Locality
Freßnitzgraben, Krieglach, Fischbacher Alpen, Styria, Austria
Mineral Data
(Mg,Fe2+)Al2(PO4)2(OH)2
Strunz: 
8.BB.40
Physical Properties
Crystal System: 
Monoclinic
Streak: 
White
Hardness: 
5.5 - 6.0
Tenacity: 
brittle