Bianco Sardo

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The polished surface shows the individual minerals that make up the stone structure of the Bianco Sardo's very well. The whitish feldspar and the gray (transparent) quartz are the main parts of the mix.
Bianco Sardo: The polished surface shows the individual minerals that make up the rock structure of this granite. The whitish feldspar and the gray (transparent) quartz are the main parts of the mix.
Bianco Sardo with a polished surface

As Bianco Sardo ( ital .: bianco = white) is a granite from the Italian granite Gallura referred that in mountain massif Limbara in the north of Sardinia is mined. This granite is quarried in several quarries around Buddusò in the province of Sassari and was formed in the Carboniferous 330 million years ago.

Emergence

The granite deposits of Sardinia, such as the Rosa Sardo and the Bianco Sardo , formed millions of years ago in large-volume magma chambers in the earth's crust and crystallized there after long periods of time. Depending on the rate of cooling and the composition of the magma , different granite deposits emerged.

Rock description

The Bianco Sardo , which consists of white and champagne-colored feldspars , is medium to coarse-grained. Bianco Sardo contains gray quartz and the black biotite gives it its granular structure. Biotite can be accumulated in dark areas up to 5 cm in size - but rarely. About 30% quartz is contained in this natural stone and gives this stone its abrasion hardness. Small proportions of chlorite , amphiboles , magnetite and pyrite can occur in this natural stone .

The largely light white natural stone can vary down to gray and is then called Sardo Grigio ( Italian: grigio = gray).

use

The large granite deposits on Sardinia were already used in prehistoric times for the construction of massive walls and in stone construction, and together with the other local granite, the Rosa Sardo , they were used in historical clerical and profane masonry structures on the island. Bianco Sardo was only traded internationally as slab and tile in the 1970s, before this stone was only of local importance in construction.

Bianco Sardo can be polished and is acid, alkali and frost resistant. It is used in the building industry, both indoors and outdoors, for floor and stair coverings, window sills, kitchen worktops and wall cladding, and is now mainly used in private and commercial buildings.

See also

Individual evidence

  1. ↑ Information about the place Buddosó . (Italian), accessed December 6, 2010
  2. ↑ Karlfried Fuchs: Natural stones from all over the world, discover, determine, use. Sheet 53. Vol. 1. Munich (Callwey) 1997, ISBN 3-7667-1267-5 .
  3. ↑ a b Friedrich Müller: INSK compact. The international natural stone index for the current market. Sheet 10.5. Volume I. 1st edition. Ebner Verlag Ulm 1997.

Coordinates: 40 ° 34 ′ 41.4 "  N , 9 ° 16 ′ 33.8"  E