KYANITE CRYSTALS IN MICA SCHIST - Norway
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KYANITE CRYSTALS
Norway
Pale blue, bladed crystals of kyanite in mica schist.
Kyanite is not only a gemstone but is also a mineral with an interesting geological history. It forms only at extremely high pressures – such as those that exist deep beneath mountain ranges as a result of continental collisions. It has been brought to the surface by hundreds of millions of years of erosion.
This is from an old collection, collected in the 1970s.
Click on a picture for a larger image
Size: 12 x 5.5 x 3.5 centimetres
Weight: 273 grams
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