Tenacity
-
Brittle
Solubility
-
insoluble
Durability
-
-
Specific Gravity
3.1-3.26.86-7.03
1
7.18
👆🏻
Fracture
-
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Vitreous, pearly on cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
3-46-7
2
10
👆🏻
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references