1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.25-3.283.16-3.43
1
7.18
1.5 Fracture
Uneven
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
1.6 Cleavage
{100} Distinct, {001} Poor, {110} Poor
{110} Good, {110} Good
1.7 Mohs Hardness
1.8 Chemical Composition
Ca2Fe++Al2BO3Si4O12(OH)
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)