A patterned light tonalite gneiss quarried from the same deposit as Silver Green, in Varpaisjärvi, Finland. It is very suitable for monuments and can be used decoratively indoors or outdoors.
Quarried from: Varpaisjärvi, Finland
Age of stone: 2.6 billion years
Technical specifications (2023):
EN 1936 Density 2640 kg/m3
EN 13755 Water absorption 0,2 %
EN1926 Compressive strength 177 MPa, lower expected value 156 MPa
EN12371 Compressive strength, frost resistance 175 MPa
EN12372 Flexural strength 13,1 MPa, lower expected value 11,4 MPa
EN 12371 Flexural strength, frost resistance 14,2 MPa
EN 14157 Abrasion resistance 15,0 mm
EN 13364 Breaking load at dowel hole 2050 N, lower expected value1540 N
EN 14231 Slip resistance/dry condition 86, wet condition 66
Hardness: 6,3 Mohs
Mineral composition:
Quartz 46.4%
Plagioclase 42.1%
Biotite 5.4%
Muscovite 4.5%
Kyanite 1.0%
Potassium feldspar 0.6%
Rutile < 0.1%
Titanite < 0.1%
Ilmenite < 0.1%
Zirconium < 0.1%