Tenacity
Brittle
Slightly sectile
Solubility
-
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
-
-
Specific Gravity
2.79-2.872
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Prismatic {10 1 0}, perfect
Mohs Hardness
5.5-62-2.5
2
10
👆🏻
Chemical Composition
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references