Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.085.6-5.76
1
7.18
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Fracture
Subconchoidal, Uneven, Conchoidal
Uneven
Cleavage
Poor on {100}
[001] perfect; [100] distinct
Mohs Hardness
52.5-3
2
10
👆🏻
Chemical Composition
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)