Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.05
3.50-3.60
Fracture
Brittle, Metallic
Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
Cleavage
Distinct / Good, Prismatic
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
Mohs Hardness
4-6
6
Chemical Composition
Ba(Mn++++,Mn++)8O16
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
