Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.1-3.24.33-4.42
1
7.18
👆🏻
Fracture
-
-
Cleavage
Vitreous, pearly on cleavage
Perfect
Mohs Hardness
3-44.5
2
10
👆🏻
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca(Nd,Ce,La) 2(CO 3) 3F 2Ulrich Henn and Claudio C.