1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
insoluble
Insoluble in acids
1.3 Durability
Not Available
Not Available
1.5 Specific Gravity
1.8 Fracture
Uneven, Subconchoidal, UnevenArthur Thomas, Fibrous
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
1.9 Cleavage
[110] perfect, [101] good, [010] distinct
{110} good, 100 moderate, parting on {092} and {011}
1.10 Mohs Hardness
1.11 Chemical Composition
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)