Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.13-3.755.05
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, Conchoidal
Uneven
Cleavage
Poor on {100}
[001] perfect
Mohs Hardness
63-3.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 9(SiO 4) 4(F,OH)) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pb 26Ag 10Cu 24Cl 62(OH) 48 · 3H 2OWalter Schumann , Gemstones of the world (2001) More from other references