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
3.25-3.283.23-3.26
1
7.18
1.5 Fracture
Uneven
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
1.6 Cleavage
{100} Distinct, {001} Poor, {110} Poor
Perfect on {010} imperfect on {100}
1.7 Mohs Hardness
1.8 Chemical Composition
Ca2Fe++Al2BO3Si4O12(OH)
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)