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Hardness: 2.5 - 4
Density: 2.8 - 2.9
Colours: Colourless, to white or gray
| ||Crystal System: Monoclinic|
Cleavage: Perfect basal
Reaction with HCl: None
Identification in hand sample:
Colour and habit are best indicators.
Industrial / ecomonic uses:
Used in the electronics industry in the manufacture of capacitors, transistors, insulators and certain window types. Also used as a filler in building materials.