General Information:
Chemical Formula:
NaCa(Mn++,Fe++)(Ti,Nb,Zr)Si2O7(O,F)2
Environment:
In miarolitic cavities in nepheline syenite.
IMA Status:
Not IMA Approved
Locality:
The Prudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada.
Name Origin:
For Mr. Charles Normand (1963-), of Montreal, who discovered the mineral.
Physical Properties:
Cleavage:
[100] Distinct, [001] Distinct
Color:
yellow, orange brown, or orange.
Density:
3.48 - 3.5, Average = 3.49
Diaphaniety:
Transparent to translucent
Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Acicular - Occurs as needle-like cr ystals.
Hardness:
5-6 - Between Apatite and Orthoclase
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Adamantine
Streak:
pale yellowish white
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