1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Gems, Uneven
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
1.6 Cleavage
Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.
[001] perfect; [100] distinct
1.7 Mohs Hardness
1.8 Chemical Composition
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)