General Information:
Chemical Formula:
Mg3-4(Al,Fe+++)5.5-6(SiO4,BO4)5(O,OH)2-3
Environment:
Metamorphic and alluvial rocks.
Locality:
Fiskernaes, SW Greenland.
Name Origin:
Named after the Danish geologist, A. N. Kornerup (1857-1881).
Physical Properties:
Cleavage:
[110] Indistinct
Color:
brown, colorless, green, greenish yellow, or yellow.
Density:
3.3 - 3.34, Average = 3.32
Diaphaniety:
Translucent to opaque
Habits:
Massive - Fibrous - Distinctly fibrous fine-grained forms., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).,
Hardness:
7 - Quartz
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Streak:
white
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