The close-up view of each stone type shows a relatively true image of the crystalline structure and the colouring. This is suitable for grained slabs to a limited extend only. In regard to the colour matching, please take an original sample of the stone from your furniture store as a basis.
Bright grey to grey-white, fine-crystal paragneiss with an irregular cloudy decor. The main mixture components consist of white feldspar and glass-transparent quartz; black biotite streaks, some silvery muscovite and greenish epidote give the ornamentation. Clouds, folds, waves and, in part, parallel layers, are the most frequent optical features which show to best advantage on the polished surfaces.
Paragneiss has been generated through metamorphosis of former sediment rock, which, as a result of tectonic activities, reached the transition area between earth crust and earth mantle. There, it was re-crystallised to fine-crystal gneiss from the effect of increased pressure and temperature. The mica minerals have been generated from the clay elements of former sediments.
|Structure Type||Slab with Irregular Pattern|
|Group||Metamorphic Rock Type|
|Age||700 million years (Precambrian)|
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