Perthite
Perthite is named after the town of Perth in Canada. It is formed by intergrowth of several varieties of feldspar - albite or oligoclase with a microcline or occasionally orthoclase host.
Perthite has reddish-brown or off-white body colour with mainly orange-gold labradorescence.
Perthite is used as an attractive ornamental stone.
Perthite has reddish-brown or off-white body colour with mainly orange-gold labradorescence.
Perthite is used as an attractive ornamental stone.
| Colour | |||||||
|---|---|---|---|---|---|---|---|
| Colour (General) | Reddish-brown or off-white body colour with mainly orange-gold labradorescence., Gemstones (2009) | ||||||
| Fluorescence & other light emissions | |||||||
| Fluorescence (General) | Material from Zimbabwe exhibits patchy bluish and greenish fluorescence ubder both SW and LW UV., Gemstones (2009) | ||||||
| Geological Environment | |||||||
| Where found: | Common in granite pegmatites., Gemdat.org (2012) | ||||||
| Further Information | |||||||
| Mineral information: | Perthite information at mindat.org | ||||||
| Significant Gem Localities | |||||||
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