crystal is composed of calcite like marble, except that depending on the degree of metamorphism, the size of the crystals is sometimes larger than what is normally visible to the eye for rock crystal. Crystal stone, like marble, is a kind of metamorphic stone. Crystal stones may be composed of quartz, which increases the hardness of the stone.
Crystal stone constituents
Crystal stone is mainly composed of two minerals, wollastonite and calcite. Wollastonite is a non-calcium silicate mineral (CaSiO3) that may contain small amounts of iron, magnesium, and manganese instead of calcium. It is usually white.
It forms when impure limestone or dolomite is exposed to high temperature and pressure, sometimes in the presence of siliceous fluids such as skarns or in contact with metamorphic rocks.
Associated minerals include garnet, vesovianite, diopside, tremolite, epidote, plagioclase feldspar, pyroxene, and calcite. This name is derived from the English chemist and mineralogist William Hyde Wollaston, who lived in the 18th century.
Variety of crystal stone colors
Unlike marble, crystal stones have very few color variations and are often colored. Bright white spots are seen, which may be accompanied by yellow or red streaks. The white color of Chinese stones in tropical areas causes low heat absorption and high light reflection, but in other areas, especially urban areas, due to the low color variety, their use in interior and exterior decoration of buildings has decreased.
Crystal stone mining in Iran
The crystal stone that is extracted from the mines of Iran is actually a marble stone that has been recrystallized due to the thermal pressure caused by the injection of high-temperature magma over a long period of time, and its grading is crystal that can be seen with the eye. Regarding the coarseness of this aggregate, this building stone is called crystal.
Using the latest and most advanced technologies of European machines, Uranus Stone Industries is capable of supplying stone products including slabs, tiles and stairs.
Uranus Stone Industries, with its brilliant history and reputation, is able to supply all kinds of export caps from the best mines of Iran as well as It has its own special and exclusive mines that it exports exclusively to some countries such as Italy, Spain, Portugal, Turkey, China, Greece, etc.