Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.632.24-2.29
1
7.18
👆🏻
Fracture
Uneven
Uneven, Subconchoidal, Conchoidal
Cleavage
{001} Perfect, {010} Good
Very poor [100]
Mohs Hardness
6-6.55-5.5
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references