Sabinaite

General Information: Chemical Formula:(Na,Ca)4Zr2Ti(CO3)4O4 Composition:(Molecular Weight = 634.87 gm)Sodium 12.67 % NaCalcium 3.16 % CaZirconium 28.74 % ZrTitanium 7.54 % TiCarbon 7.57 % C Oxygen 40.32 % O  Empirical Formula: Na3.5Ca0.5Zr2Ti(CO3)4O4 Environment:Dawsonite-rich sill. IMA Status:Approved IMA 1978 Locality:St. Michel, Montreal Island, Canada. Name Origin:Named for Ann Phyllis Sabina Stenson (1930-), mineralogist, Geological Survey of Canada.Physical Properties: Cleavage:[001] Perfect, [100] Distinct Color:colorless, white, or light yellow. Density:3.36 Habits:Powdery - Forms a loose, poorly-coherent pulverulent mass., , Luster:Earthy (Dull) Streak:whiteMore details...