Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.25-2.403.80-4.15
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
perfect on {010}; good on {100}
perfect along [010] and [100]
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
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references