Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.60-2.65-9999
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Sub-Conchoidal, Splintery
Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
{201} Imperfect, {100} Poor, {001} Poor
Mohs Hardness
6-6.53.5-4
2
10
👆🏻
Chemical Composition
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
FeAsO4·2H2O