Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.104.95-5.0
1
7.18
👆🏻
Fracture
Splintery, Granular
Uneven
Cleavage
None
Imperfect to indistinct on {10 1 0}, parting on {0001}
Mohs Hardness
6-6.54-5
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references