General Information:
Chemical Formula:Ca14Nb2(Si2O7)4O6F2
Composition:(Molecular Weight = 1,553.57 gm)Calcium 36.12 %
CaNiobium 11.96 %
NbSilicon 14.46 %
SiOxygen 35.01 %
O Fluorine 2.45 %
F Empirical Formula: Ca14Nb2(Si2O7)4(O)6F2
Environment:In carbonatites.
Locality:Oka, Quebec, Canada.
Name Origin:Named for its composition (Niobium, Calcium).
Physical Properties: Cleavage:None
Color:light yellow.
Density:3.32
Diaphaniety:Transparent
Habits:Square - Occurs as square crystals in shape or outline., ,
Hardness:6 - Orthoclase
Luster:Vitreous (Glassy)
Streak:white
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