Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.022.24-2.29
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven, Subconchoidal, Conchoidal
Cleavage
Indistinct on {110}
Very poor [100]
Mohs Hardness
5-5.55-5.5
2
10
👆🏻
Chemical Composition
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references