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
2.65-2.903.13-3.26
1
7.18
1.5 Fracture
Gemstones (2009), Flexible Flexible fragments.
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
{001} Perfect
Not Available
1.7 Mohs Hardness
Not AvailableNot Available
2
10
1.8 Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 5(F,Cl)(PO 4) 3Arthur Thomas , Gemstones (2009)