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Samoa White

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

Ivory coloured feldspars, in 3-8 cm crystal clumps, make up 60% of the rock with a further 30% composed of grey transparent quartz. Under bright light, shining at an angle, a certain degree of cracking is visible, which occurred during the metamorphosis. Well-rounded crystals of red garnet have lodged in the black streaks of biotite. 

Petrogenesis

Original granite got into a greater depth where, without any addition of material or significant change of mineral content, it was re-crystallised and the un-aligned structure was changed into an aligned structure. This is particularly noticeable in the long, drawn out layers of biotite mica. The approximately 1 billion years old rock was lifted at a later time and exposed.

Hardness Hard Stone
Structure Type Homogeneous Structure
Synonyms Bianco Samoa, Samoa Light (Topazio White)
Group Metamorphite
Petrographic Assignment Gneiss
Age 1 billion years (Precambrian)
Colouring Minerals White-beige feldspar, grey-transparent quartz, black biotite, red garnet
Average Hardness 6 (according to Mohs's hardness scale 1-10) / Natural stone
Deposit Brazil, Barra de Sao Francisco/Espirito Santo