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
3.65-4.552.90-3.20
1
7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
None, but may exhibit slight parting
Not Available
1.7 Mohs Hardness
1.8 Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.