Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.1-3.23.95-4.10
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
Vitreous, pearly on cleavage
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
3-43.5-4
2
10
👆🏻
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references