Which is better, quartz rock, class A to class C?
The main production of quartz crystal in pegmatite geode block; often occurs in hydrothermal veins; granular quartz is the main minerals of granite, gneiss and sandstone many rock composition. In addition to crystal, agate and other used as gems or process materials, the more pure general quartz used in large quantities as glass raw materials, grinding materials, silicon refractory materials, etc.. Impure quartz is an important building material.
Quartz stone quality grade is divided into A, B, C three categories (level), A can be used for home improvement standards, B and C can not.Fine quartz Shi Ke becomes a gemstone.Classification of quartziteBrief introduction and classification of quartziteBecause of size, color, inclusion and so on has many variants: phanerocrystalline: colorless transparent crystal; Purple Amethyst (commonly known as amethyst); smoke smoke yellow, brown to blackish Citrine, smoky quartz or quartz; light yellow, transparent Huang Shuijing; rose red rose quartz (commonly known as the hibiscus stone); quartz white milk. Arenaceous stone with mottled glitter due to scale inclusions such as hematite or mica. The cryptocrystalline varieties are: fibrous ceramics composed of chalcedony (Yu Sui); colloidal origin agate; composed of quartz metasomatic fibrous asbestos and the pseudocrocidolite etc.. An amorphous variety consisting of granular microcrystalline, often containing a mixture of other minerals, opaque, mostly flint, gray to black (commonly known as flint). Jasper is dark red or greenish yellow or greenish blue because of ferric oxide impurities.
Quartz stone species: phanerocrystalline: colorless transparent crystal; Purple Amethyst (commonly known as amethyst); smoke smoke yellow, brown to blackish Citrine, smoky quartz or quartz; light yellow, transparent Huang Shuijing; rose red rose quartz (commonly known as lotus stone); quartz white milk. Arenaceous stone with mottled glitter due to scale inclusions such as hematite or mica. The cryptocrystalline varieties are: fibrous ceramics composed of chalcedony (Yu Sui); colloidal origin agate; composed of quartz metasomatic fibrous asbestos and the pseudocrocidolite etc.. An amorphous variety consisting of granular microcrystalline, often containing a mixture of other minerals, opaque, mostly flint, gray to black (commonly known as flint). Jasper is dark red or greenish yellow or greenish blue because of ferric oxide impurities. The main production of quartz crystal in pegmatite geode block; often occurs in hydrothermal veins; granular quartz is the main minerals of granite, gneiss and sandstone many rock composition. In addition to crystal, agate and other used as gems or process materials, the more pure general quartz used in large quantities as glass raw materials, grinding materials, silicon refractory materials, etc.. Impure quartz is an important building material.
The chemical composition of quartzite (dominated by SiO2 through infrared spectroscopy can prove that the map is shown in Figure 1; or use the Thermo Scientific Quant X ray fluorescence spectrometer were analyzed, the main elements of Si, containing a small amount of impurities; rich colors, yellow, green, grey, common white, brown, orange, red pink, red and blue; glass luster; cleavage; density of 2.64 ~ 2.71g/cm3; Mohs hardness of 6.5 ~ 7[3]; the refractive index is often 1.54 (measuring point); heterogeneous aggregates; microscope examination granular structure, some samples of fiber light apparent visible granular structure, excellent quality and delicate texture and grain is not obvious (Figure 4).Quartzite Jade Bracelet - A (Figure 4)B quartz quartzite jadeObservation under the microscope magnification in the reflected light, the surface is rough, uneven, acid etch is very obvious, showed clear reticular pattern, this is because the quartzite structure is relatively loose, the hardness difference between the gum and the main body of the jade after pickling, glue filled surface is easily caused by abrasion and injection the transparency; in transmitted light, high internal, relatively clean, quartz particles between the boundaries blurred. At the same time, some B quartz rocks show strong green fluorescence in the ultraviolet fluorescent lamp. Generally speaking, the transparency of B quartzite jade is improved, and the aesthetic effect is increased.The most common form of quartz jade in C is the Malaysia jade, a green quartz rock originally used in imitation of jade.The microscope observation, visible quartz particles clearance and cracks in dye aggregation, a stockwork or loofahs shaped distribution, a small amount was mass distribution, uneven color distribution.
