Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.652.25-2.40
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
-
Cleavage
[1010] Poor
perfect on {010}; good on {100}
Mohs Hardness
5-65-5.5
2
10
👆🏻
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references