Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.90-4.002.90-3.02
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Conchoidal
Cleavage
Perfect on {001}, good on {210}, poor on {010}
Indistinct on {110}
Mohs Hardness
3-3.55-5.5
2
10
👆🏻
Chemical Composition
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaBePO 4(F,OH)Ulrich Henn and Claudio C.