1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.54-2.612.95-3.07
1
7.18
1.5 Fracture
Gems, Uneven
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.
Perfect on {110} at 56° and 124°; partings on {010} and {100}
1.7 Mohs Hardness
1.8 Chemical Composition
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.