1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Readily soluble in water
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven
Uneven, Conchoidal, Brittle
1.6 Cleavage
{010} Good, {100} Distinct
Good on {0001}
1.7 Mohs Hardness
1.8 Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
KNa22(SO4)9(CO3)2Cl