Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
{110} Perfect, {???} Distinct, {???} Distinct
111 (perfect in four directions)
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
C