Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.25-2.403.95-4.10
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
perfect on {010}; good on {100}
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
5-5.53.5-4
2
10
👆🏻
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references