Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.102.25-2.40
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
perfect on {010}; good on {100}
Mohs Hardness
3.5-45-5.5
2
10
👆🏻
Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references