Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
[110] perfect; [010] distinct
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
Uneven, ConchoidalWalter Schumann
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.