Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
Subconchoidal, Uneven, Conchoidal, Irregular
{100} imperfect, {110} indistinct; partings on {111} or {011}
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
{???} Distinct, {???} Distinct, {???} Distinct
LiFe3+ (PO 4)(OH)Anthony et al , Handbook of mineralogy (2001)