1 Physical Properties
1.1 Tenacity
1.2 Solubility
insoluble in water
insoluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Fibrous
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
1.6 Cleavage
Not Available
Perfect on {001}, poor on {201} with 38.5° angle between the two
1.7 Mohs Hardness
1.8 Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references