Zermattgreen
Quartzite
Structure: Slaty, fissile rock with roughrough cleavage plane. The surface shows approx. 50% fine-grained white quartzite and 50% mild-lightgreen Phengit mica. Furthermore there is small content of feldspar. In the incidence of light ZERMATTGREEN appears to be strongly glittering. ZERMATTGREEN is a common material in Switzerland, France, Italy and Germany. The sampling of ZERMATTGREEN is quite difficult because of the changing texture. Usually prototypes are not sufficient in order to obtain a general impression of the rock. Thus a wide sampling to the switching of an impression and the effect of the rock is recommended.
Characteristics: After the MOHS´ hardness scale (1 = chalk, 10 = diamond) the ZERMATTGREEN possesses a degree of hardness of 7 and ranks among the hard rocks. It is to a large extent frost steady. Quartzites are to be protected against acids.
Emergence: The ZERMATTGREEN resulted from metamorphosis of a clayey, quartz-rich sandstone. The high portion of mica resulted from the clay minerals.
Age: Approx. 200 Millione years (Trias/Jura).
Use: In the interior and external architecture, mainly wall linings of all kinds, base plates and break-roughly also in the garden design.