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Mosaikus

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.

Petrography

The white-grey ”eyes” consist of a fine to medium sized grain mixture of feldspar and quartz. They are framed by fine mica layers (a lot of silvery shining muscovite, only a little dark biotite).

Petrogenesis

Paragneiss has its origin in sandy-clay seabed deposits. The layers were compacted to clayey sandstones or sandy clay slate. This attractive glittering rock from direction-orientated feldspar, quartz and mica was generated only under the high pressure and temperature during the earlier folding up of a mountain range.

Hardness Hard Stone
Structure Type Homogeneous Structure
Synonyms
Group Metamorphic rock
Petrographic Assignment Paragneiss
Age > 570 million years (Precambrian)
Colouring Minerals White feldspar, light grey-transparent quartz, silvery shining muscovite mica
Average Hardness 7 (according to Mohs’s hardness scale 1-10)
Deposit Brazil