1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.4 Durability
Not Available
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1.6 Specific Gravity
1.8 Fracture
Uneven
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
1.9 Cleavage
1.10 Mohs Hardness
1.11 Chemical Composition
MgB 3O 3(OH) 5 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Ca 2 MgAl 2 BSi 4 O 15 OH Gemdat.org, Management Team (2012)