The beginning is more popular red and yellow stone, the demand is great, but soon, the use of black stone to become the trend of people catch up. Black stone gives an elegant, high-grade impression, through the mirror finishing gives a dignified, restrained luxury feel
In the past, the use of natural stone as a building decoration materials or very luxury, but because of stone mining and processing technology development, natural stone has been widely popular. And the apparel industry, the stone industry will have a popular fashion trend. The beginning is more popular red and yellow stone, the demand is great, but soon, the use of black stone to become the trend of people catch up. Black stone gives an elegant, high-grade impression, through the mirror finishing gives a dignified, restrained luxury feel.
Black Rock Category:
The rock can be roughly divided into soft rock and stone hard rock. Hard rocks include gabbro, black granite, stone granite and diabase. Soft rocks include sedimentary rocks such as limestone, clay schist and metamorphic rocks such as marble.
Granite is the most common kind of rock on this planet. It is a hard stone that is scientifically and prudently defined according to its mineral composition. But this is not a general definition of all kinds of hard stone. Granite is generally light-colored, mostly hard textured with fine textures, and its texture structure does not follow any particular rules. For example: it can be both spotted and stripey, and there can be cracks that traverse the rocks, such as veins and feldspars. Black granite can not be found anywhere on this earth. Most of the black stone, which is mistaken for granite, is either a gabbro, such as India's "Star" ("Star" is a gabbro from India) and "Panama Black" , Or some kind of diorite as Brazilian "Brazilian black". These granite "relatives" and granite have very different chemical composition. Once, can not be defined as granite. )
Sedimentary rocks and sediments are a kind of soft rock (such as Jurassic limestone, various sandstones, etc.) formed by the deposition of ore or stone particles followed by solidification.
If the sedimentary rocks enter the interior of the crust through the tectonic movement of the strata, they are transformed into another completely different kind of natural rock, the so-called metamorphic rocks, due to the enormous pressure and high temperature environment of the outer layers of the stone. Generally speaking, according to the depth of these conversion areas and the composition of the original rock, due to the crystal size and structure changes, sandstone can be transformed into silicon or marble.
Black limestone is relatively common. Their black color comes from the silt formed by algae and other plants decaying. For this reason, most of the black limestone is located near the coast or at the former bay. True black marble is not too much, such as produced in Portugal, "silver sand black", and produced in Namibia "Cali than black".