Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.504.95-5.0
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven
Cleavage
None
Imperfect to indistinct on {10 1 0}, parting on {0001}
Mohs Hardness
74-5
2
10
👆🏻
Chemical Composition
Mn 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006)
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references