1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.55-3.702.90-2.98
1
7.18
1.5 Fracture
Gemstones (2009)
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
Not Available
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
1.7 Mohs Hardness
1.8 Chemical Composition
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references