Baltic Green Granite

Baltic Green Granite, also known as rapakivi granite, is a distinctive natural stone quarried in the village of Rantamaki, Raippo, Ylamaa, Lappeenranta, Finland. This granite, formed during the Precambrian period, boasts unique geological characteristics that contribute to its exceptional appearance.

The granite exhibits a green-grey color palette, with deep green being the predominant hue. The stone's coarse medium grain features pyroxene, and the overall texture is characterized by medium-sized rounded grains. This combination creates a dense and uniform appearance, giving Baltic Green Granite a sense of solidity and natural beauty.

The deep green coloration of the granite adds a touch of richness and sophistication to its aesthetic. The medium-sized rounded grains contribute to the stone's distinct texture, creating an intriguing visual appeal. Baltic Green Granite's rapakivi structure, characterized by rounded feldspar crystals surrounded by a finer-grained matrix, further enhances its unique and attractive features.

Quarried in the village of Rantamaki, this granite is renowned for its durability and versatility. Its deep green color and distinctive grain make it a sought-after choice for various applications, including countertops, flooring, wall cladding, and other decorative elements. Baltic Green Granite stands as a testament to the beauty of natural stone, reflecting the geological history of the Precambrian period in the rugged landscapes of Finland.

TECHNICAL PROPERTIES
Water absorption (%) mean value 0,11
Standard deviation (%) 0,00
Apparent Density (kg/m3) mean value 2680
density from ... To ...(kg/m3) 2670 to 2690
Standard deviation(kg/m3) 9
Open porosity (%) mean value 0,32
standard deviation (%) 0,01
Flexural strength (MPa) mean value 10,1
Standard deviation(MPa) 0,7
Min exp value(MPa) 8,8
Flexural strength after frost (MPa) mean value 9,7
Change in mean flexural strength after 48 cycles (%) 4,0
Standard deviation(MPa) 0,8
Min exp value(MPa) 8,2
Compression strength (MPa) mean value 204
Standard deviation(MPa) 20,4
Min exp value(MPa) 162
Compression strength after frost (MPa) mean value 205
Standard deviation(MPa) 22,4
Min exp value(MPa) 157
Water absorption by Capillarity C (g/m2s0,5) mean value 0,306
Standard deviation(g/m2s0,5) 0,02
Skid resistance - dry polished mean value 48,9
Skid resistance - wet polished mean value 14,5
Skid resistance - dry honed mean value 53,5
Skid resistance - wet honed mean value 33,6
Abrasion resistance (mm) mean value 17
Resistance at the anchoring system
Mean breaking Load(N) 2500
Min exp value (N) 1780
Standard deviation (N) 400
d1(mm) 10,3
bA(mm) 52,2
Resistance to Thermal shock
visual changes yes, a bit yellow
max Mass change (%) 0,02
max res. Freq. change (%) 19
Water absorption by Capillarity C (g/m2s0,5) no directions
parallel mean value
Standard deviation
Water vapour resistance factor μ dry 10000
Water vapour resistance factor μ wet 10000