1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
HCl soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven
Uneven
1.6 Cleavage
{010} Good, {100} Distinct
{10 1 1} Good
1.7 Mohs Hardness
1.8 Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
(Ni,Mg,Fe++)CO3