Jupiterbright
Granite
Structure: JUPITERBRIGHT is a white-grey gneiss. The principal part in the rock forms the snow-white potash-feldspar. Quartz arises light-grey. Black biotite (dark mica) is small available however predominantly evenly in the rock distributed. Characteristically of JUPITERBRIGHT are the partial poor-thick, partly far-constantly bent zones same direction orientation of the mineral constituent parts. Often there are concentrations of dark mica. One is JUPITERBRIGHT the brightest gneiss, which is used as cut stone. This rock originates from the alpine region and ranks among the group of the metamorphic gneiss. Generally such rocks are called granite.
Characteristics: After the MOHS hardness scale (1 = chalk, 10 = diamond) JUPITERIBRIGHT possesses a degree of hardness of 6-7; it counts to the hard rocks and is to a large extent frost steady.
Emergence: JUPITERBRIGHT belongs as gneiss to the family of the metamorphic rocks. All rocks of this group developed under partly very high pressures and temperatures. Those circumstances stopped for any length of time and resulted in more or less strongly materially and structurally change of the origin rock. From partial remelt of the sandy - clayey rock developed quartz and feldspar and the mica minerals. With a on one side arranged pressure developed a parallel texture, which in a lie-wise arrangement mica expresses itself. Causes for the rock transformation were the enormous forces, which were produced during the collision of the African continent with the European continental mass. As the result high mountains e.g. today's alps where unfolded.
Age: approx. 540 - 250 million years (Kambrium - Permian).
Use: In internal and external architecture; mainly as floor mats, stairs, wall linings, bathrooms as well as for table and kitchen plates.