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
1.7 Fracture
Not Available
Uneven, Subconchoidal, Uneven, Subconchoidal, Conchoidal, Brittle
1.8 Cleavage
{001} Perfect
Very poor [100]
1.9 Mohs Hardness
1.13 Chemical Composition
Mg 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references