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Baltic Brown

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 to large- grained granite with many oval/round, brown and pink-brown coloured orthoclase feldspars which are bounded by narrow edges of grey-green to olive green oligoclase feldspars. In the connecting spaces between the spherical aggregates there are small grained adhesions of black biotite mica, grey quartz and black-green hornblendes. 

Petrogenesis

During the Precambrian Period (early earth ages), in South Scandinavia and in the Baltic, several viscous magma complexes from the earth mantle pushed into the lower crust where, over millions of years, they crystallised to coarse - grained granites.

Hardness Hard Stone
Structure Type Homogeneous Structure
Synonyms Bruno Baltico, Marron Baltico, Kugelgranit, Rapakiwi-Granit
Group Plutonite
Petrographic Assignment Granite
Age 1.2 billion years (Precambrian)
Colouring Minerals brown-pink feldspar, grey -olive feldspar, black biotite, grey quartz, black-green hornblende
Average Hardness 6-7 (according to Mohs's hardness scale 1-10) / Natural stone
Deposit Finland - south of Lappeenranta