2 Physical Properties
2.2 Tenacity
2.4 Solubility
Not Available
Not Available
2.7 Durability
Not Available
Not Available
2.9 Specific Gravity
3.20-3.322.60-3.02
1
7.18
2.17 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal
Uneven
2.18 Cleavage
2.19 Mohs Hardness
2.20 Chemical Composition
(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
(Mg,Fe2+ ) 5Al(Si 3Al)O 10(OH) 8Anthony et al , Handbook of mineralogy (2001)