Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.1-3.22.81
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Vitreous, pearly on cleavage
{001} Perfect
Mohs Hardness
3-44.5-5
2
10
👆🏻
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references