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2cmGreyQuartzite

Quartzite

Type Quartzite
Width 200cm
Height 140cm
Thickness 2cm
Colour Grey
Description

Pure white marble is the result of metamorphism of a very pure (silicate-poor) limestone or dolomite protolith. The characteristic swirls and veins of many colored marble varieties are usually due to various mineral impurities such as clay, silt, sand, iron oxides, or chert which were originally present as grains or layers in the limestone. Green coloration is often due to serpentine resulting from originally high magnesium limestone or dolo stone with silica impurities. These various impurities have been mobilized and re crystallized by the intense pressure and heat of the metamorphism.

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