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FELDSPAR - Norway

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FELDSPAR

Evje, Norway
  
A fine example of orthoclase feldspar. Each side has beautifully cleaved surfaces.
  
Feldspars are essential constituents of igneous rocks, particularly granite; the pink crystals of orthoclase feldspar, for example, gives the most common type of granite its characteristic pink colour.
 
There are two main groups: the alkali feldspars (which includes orthoclase) and the plagioclase feldspars, each distinguished by chemical composition such as the existence of sodium or potassium. 
The feldspars have numerous industrial uses, such as in ceramics and many household goods.
  
Presented in a lidded gift box.
 
Click on a picture for a larger image

Size:  8 x 4.5 x 2.5 centimetres
Weight: 155 grams

PRICE: £12.00
FELDSPAR - Norway
FELDSPAR - Norway FELDSPAR - Norway FELDSPAR - Norway FELDSPAR - Norway