1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.4 Solubility
Not Available
Not Available
1.7 Durability
Not Available
Not Available
1.9 Specific Gravity
1.11 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
1.12 Cleavage
Not Available
{???} Indistinct
1.13 Mohs Hardness
1.14 Chemical Composition
MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)