Cleavage
Perfect on [001] imperfect on [100]
{???} Distinct, {???} Distinct, {???} Distinct
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
LiFe3+ (PO 4)(OH)Anthony et al , Handbook of mineralogy (2001)