Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
{???} Distinct, {???} Distinct, {???} Distinct
LiFe3+ (PO 4)(OH)Anthony et al , Handbook of mineralogy (2001)
NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references