Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.62-4.335.9-6.3
1
7.18
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Fracture
Uneven
Conchoidal, Uneven
Cleavage
Indiscernible
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Mohs Hardness
7-7.54.5-5
2
10
👆🏻
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references