Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.74-2.762.54-2.61
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
{010} Perfect, {001} Distinct
{001} Perfect, {010} Good
Mohs Hardness
3.5-46
2
10
👆🏻
Chemical Composition
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)