Tenacity
-
-
Solubility
insoluble in water
-
Durability
-
-
Specific Gravity
2.51-2.633.07-3.13
1
7.18
👆🏻
Fracture
Fibrous
Conchoidal, Uneven
Cleavage
Perfect basal
{100} Perfect, {010} Distinct, {102} Distinct
Mohs Hardness
2.5-4.53-3.5
2
10
👆🏻
Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references