How do you distinguish between slate and sandstone?
Sandstone is composed of quartz grains (sand), which is stable in structure, usually light brown or red. Sandstone is a sedimentary rock, mainly formed by cementation of sand, the sand content should be greater than 50%. Most of the sandstone is composed of quartz or feldspar. The main component of A. quartz composition of more than 52%; B. clay around 15%; C. goethite about 18%; D. other substances more than 10%.
Rock is a kind of plate structure, basically no recrystallization of the rock, is a metamorphic rock, the original rock is argillaceous, silty or neutral tuff, along the direction of the board can be stripped into thin slices. The color of slate varies with the impurities contained in it.
The simplest is to separate from appearance:Slate is a layer of stone containing sericite, relatively smooth, sandstone is granular stone.
The world has been exploited by the Australian sandstone, India sandstone, Spanish sandstone, sandstone, etc.. Among them, the color, the pattern is most welcome by the architectural designer is the Australian sandstone. Australian sandstone is a kind of ecological environmental protection stone, its product has no pollution, no radiation, no reflection, no weathering, no discoloration, heat absorption, heat preservation, anti slip and other characteristics.
