Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.25-2.403.1-3.2
1
7.18
👆🏻
Fracture
-
-
Cleavage
perfect on {010}; good on {100}
Vitreous, pearly on cleavage
Mohs Hardness
5-5.53-4
2
10
👆🏻
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references