1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
1.2 Durability
Not Available
Not Available
1.4 Specific Gravity
4.76-5.031.05-1.10
1
7.18
1.15 Fracture
Conchoidal, Brittle
ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.16 Cleavage
1.17 Mohs Hardness
1.18 Chemical Composition
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
[C,H,O]