Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.393.07-3.13
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Uneven
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
{100} Perfect, {010} Distinct, {102} Distinct
Mohs Hardness
7.5-83-3.5
2
10
👆🏻
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references