Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.04-3.173.07-3.13
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Uneven
Cleavage
{001} Indistinct, {???} Indistinct
{100} Perfect, {010} Distinct, {102} Distinct
Mohs Hardness
5.53-3.5
2
10
👆🏻
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references