Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.633.90-4.00
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
{001} Perfect, {010} Good
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
6-6.53-3.5
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references