Sandstone has luster like glass
It has many types. Daily use of ceramic raw materials are quartz vein, quartz sand, quartzite, sandstone, silica, opal, diatomite, etc., rice shell ash is also rich in SiO2. Quartz appearance is often white, milky white, gray translucent state, Mohs hardness of 7, broken glass gloss or fat gloss, the proportion of different crystal type, change in 2.22-2.65. The quartz is non plastic materials, the porcelain with higher clay formation at high temperature and the mullite crystal mechanical strength and chemical stability, and can increase the translucent body, is a good material for the preparation of white glaze. The period of the Republic of China by King Sambo Peng produced after the founding of new China quartz, Xingzi, Duchang, most of the province, quartz, especially since 20s, the sharp increase in the amount of.
Quartz is a kind of physical and chemical properties of mineral resources are very stable, the crystal belongs to the three party system of oxide minerals, namely low quartz (a- quartz, quartz) is the most widely distributed group minerals in a mineral species. Generalized quartz also includes high temperature quartz (b- quartz). Also known as quartz block silica, mainly the production of quartz sand (also called silica) raw material is quartz refractory material and firing ferrosilicon raw materials. Quartz chemical formula for SiO2, often contain a small amount of impurities such as Al2O3, IMO, CaO, MgO, etc..
Quartz clock, electronic equipment in the piezoelectric quartz plate is used as the standard frequency; after melting made of glass, can be used for the production of optical instruments, glasses, glass and other products; also can do precision instrument bearings, grinding materials, glass ceramics and other industrial raw materials. When the quartz crystal contains tiny bubbles or liquid filling cracks, the rainbow can be produced by interference light and can be made into fine jewelry. Napoleon's wife, Queen (Empress Josephine) has a dazzling gem collection, is made of rainbow quartz jewelry.
