Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.1-3.22.79
1
7.18
👆🏻
Fracture
-
-
Cleavage
Vitreous, pearly on cleavage
{100} and {010} perfect
Mohs Hardness
3-46
2
10
👆🏻
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
LiNa(Zr,Ti,Hf)Si 6O 15Ulrich Henn and Claudio C.