Granite rock mass in our country about 9% of the total land area, about 800000 square kilometers, especially in the southeast area, large area of bare of all kinds of granite body, see its huge reserve. According to incomplete statistics, there are about 300 kinds of granite stone. The color better are listed as follows:
- the red series: Sichuan Red, red Chinese Sichuan; Guangxi Cenxi red; Shanxi Ling Qiu Guifei red, orange; Shandong Rushan red, general red etc..
- Black Series: Inner Mongolia Black King Kong, Chifeng black, Shandong black scales; the Ji'nan green etc..
- green series are: Shandong Tai'an green; Jiangxi high pea green, light green; Anhui County Green bottom green flowers; Henan Xichuan green etc..
- flower series are: Henan Yanshi chrysanthemum green, green, Yurime snow; Shandong Haiyang white black etc..
Evaluation method
Finished good decorative stone, its quality can identify from the following four aspects:
A concept, namely the naked eye observation of the surface structure of stone. The general said the fine aggregate structure to homogeneous stone material has a delicate texture, the stone for the best; coarse and granule structure of the stone the appearance effect is poor, the mechanical properties are not uniform, slightly lower quality. In addition to natural stone because of geological effects, often have some small veins and micro cracks in them, the stone along the most vulnerable parts of rupture, should pay attention to eliminate. As for the missing edge less angle effect is even more beautiful, especially should pay attention to when choosing.
The two volume, i.e. the amount of stone size. So as not to affect splicing or result in splicing patterns, patterns, lines deformation, affecting the decorative effect.
Three listen, to listen the sound stone percussion. Generally good quality, compact and uniform with no internal micro cracks of the stone, the percussion sound crisp and sweet; on the contrary if the existence of micro cracks within the stone or veinlets, or because of weathering cause particles become loose, the gruff sound of percussion.
The four trial, namely using a simple testing method to test the quality of stone. Usually in the back of stone on a small drop of ink droplets, such as the ink quickly spread around the leaching, i.e., said particles inside the stone is loose or the existence of micro cracks, poor quality stone; and show stone density, texture good. In the finished plate selection, because the stone material is natural, not possible to exactly the same texture, mining technology in processing in the level to also have the difference. Most of the granite block cutter is a hierarchical. Granite stone no color stripe, most only color spots, there is solid. The mineral particles as small as possible.
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