Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.83-3.893.87-4.14
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Subconchoidal, Conchoidal
Cleavage
Perfect on {01 1 1}
Poor on {120}, in traces on {001}
Mohs Hardness
3.5-4.55.5-6
2
10
👆🏻
Chemical Composition
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references