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Bianco Sardo

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

Coarse grain granite, consisting of white to champagne-coloured feldspar, light grey to transparent quartz and a small portions of biotite (black mica). The biotite is evenly distributed in the rock in the form of fine black scales. Rather rarely, it occurs concentrated in black nests of up to 5 cm in size. The quartz and feldspar crystals are solidly grown together and form a dense and homogeneous crystal structure. 

Petrogenesis

The granites of North Sardinia were generated from several silicic acid-rich magma complexes which, as huge plutonite (plutonic rocks) within the earth crust, slowly crystallised into coarse grain granite. Because of slow cooling-down over several millions of years, there was enough time for the formation (collection crystallisation) of large feldspar crystals.

Hardness Hard Stone
Structure Type Homogeneous Structure
Synonyms Sardo Bianco
Group Plutonite
Petrographic Assignment Granite
Age 330 million years (Carboniferous/Devonian)
Colouring Minerals White feldspar
Average Hardness 6-7 (according to Mohs's hardness scale 1-10)
Deposit Italy - in the province of Sassari