1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.3 Solubility
1.6 Durability
Not Available
Not Available
1.7 Specific Gravity
3.355-3.433Not Available
1
7.18
1.8 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
(e.g. graphite).
1.9 Cleavage
{???} Good, {???} Good
{???} Imperfect, {???} Imperfect
1.10 Mohs Hardness
Not AvailableNot Available
2
10
1.11 Chemical Composition
(Ca,Mn2+ ,Fe2+ ) 3Al 2BSi 4O 15(OH)Anthony et al , Handbook of mineralogy (2001)
Not Available