1 Physical Properties
1.1 Tenacity
Brittle
Moderately flexible
1.2 Solubility
slightly water soluble and in hot hydrochloric acid
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.4 Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Flexible Flexible fragments.
2.5 Cleavage
Octahedral, perfect on {111}, parting on {011}
Perfect on {0001}
2.6 Mohs Hardness
2.10 Chemical Composition