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
2.69-2.722.58-2.80
1
7.18
1.2 Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Conchoidal, Brittle, Metallic, Conchoidal, Handbook of mineralogy (2001)
1.4 Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
{001} Good
1.7 Mohs Hardness
1.16 Chemical Composition
(Na,Ca)1-2Si3-2O8
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)