MACROSCOPIC DESCRIPTION
- Black coloured and medium grained rock with homogeneous appearance, dominantly biotitic
MICROSCOPIC FEATURES
- Essential Minerals of the Crystalline Phase: Plagioclase. ~40%, Microcline. ~12%, Quartz. ~41%
- Acessory Minerals: Biotite. ~6%, zircon, apatite, titanite, chlorit and opaque minerals. ~1%
PHYSICO-MECHANICAL PROPERTIES
- Compression breaking load 1138 Kg/cm2
- Compression breaking load after freezing test 1220 Kg/cm2
- Bending strength 170 Kg/cm2
- Volumetric weight 2663 Kg/m3
- Water absorption at N.P. conditions 0.16 %
- Apparent porosity 0.43 %
- Thermal linear expansion coefficient 7.9 10-6 per ºC
- Abrasion test 0.2 mm
- Impact test: minimum fall height 65 cm
- > Retour
PREVALLING APPLICATIONS
- Masonry, interior and exterior.
