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
2.90-3.103.95-4.10
1
7.18
3.7 Fracture
Splintery, Granular, Splintery, Granular, Gemstones (2009)
Not Available
3.8 Cleavage
Not Available
Not Available
3.9 Mohs Hardness
3.16 Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Al 2O 3Ulrich Henn and Claudio C.