1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
slightly water soluble and in hot hydrochloric acid
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.25-4.103.00-3.25
1
7.18
1.7 Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
1.8 Cleavage
Perfect on { 2 01} fair on {010}
Octahedral, perfect on {111}, parting on {011}
1.9 Mohs Hardness
1.13 Chemical Composition