Tenacity
Sectile
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.392.2-2.6
1
7.18
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Fracture
Irregular
Uneven
Cleavage
Perfect on {0001}
None
Mohs Hardness
2.53-4
2
10
👆🏻
Chemical Composition
Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
(Fe+++,Al)25(PO4)17O6(OH)12•75(H2O)