Generally speaking, quartzite is a new type of stone synthesized by more than 90% quartz crystal, resin and other trace elements. Its main material is quartz, which is a large size plate pressed by special machine under certain physical and chemical conditions.
Quartz is a mineral that easily becomes liquid when heated or under pressure. It is also a very common rock-forming mineral, which is found in the three major types of rocks. Because it crystallizes the latest in igneous rocks, it usually lacks a complete crystal face and is mostly filled with other rock-forming minerals that crystallized first. The composition of quartz is the simplest silicon dioxide, with glass luster, no cleavage surface, but with a shell-like fracture. Microcrystalline quartz is called chalcedony, agate or jasper. Pure quartz is colorless, but it shows a different color because it often contains impurities of transition elements. Quartz is very stable, not easy to weather or change into other kinds of minerals. According to the degree of crystallization of SiO2, it can be divided into crystalline single crystal quartz and polycrystalline quartzite jade.
Physical properties
Luster: glass luster
Color: colorless, white, with a little gray, yellow to orange, purple, deep purple, pink, gray brown, brown, black
Streak: white
Specific gravity: 2.65 ~ 2.66
Category: metamorphic rock, metamorphosed from sandstone
（1）Brittle
（2）Pyroelectric
（3）The refractive index is 1.533 ~ 1.541, the birefringence difference is 0.009, and the dispersion is 0.013
（4）Quartz has strong piezoelectricity, that is, sparks will be generated when it is struck hard and rubbed. This is the method of making fire with flint.
（5）The common inclusions in quartz are: hair crystal, mainly rutile. Caojin crystal – mainly tourmaline; hydrolith quartz with liquid inclusions; cyanite – containing light blue rutile needle; milky quartz – turbid by fine water pores; greenquartz – composed of plate or fragment chlorite, sometimes possibly green needle actinolite; Aventurine – quartzite containing green or reddish brown mica Slice, also known as Yao quartz, commonly known as Dongling stone. The common smoky black to dark brown smoky crystals are mainly related to the high content of radioactive uranium and thorium in these rocks.
Features
1、Not easy to scratch
The quartz content of quartzite is as high as 94%. Quartz crystal is a natural mineral whose hardness is second only to diamond in nature. Its surface hardness can be as high as Mohs hardness 7.5, which is far greater than the knives and shovels used in kitchens, so it is not easy to be scratched.
2、No pollution
Quartzite is a kind of compact and non porous composite material under vacuum conditions. Its quartz surface has excellent corrosion resistance to acid and alkali in the kitchen. The liquid materials used in daily life will not penetrate into the interior of quartzite. The liquid placed on the surface for a long time only needs to be wiped off with clean water or detergent, and the residue on the surface can be scraped off with a blade when necessary.
3、Not easy to break
The glossy surface of quartzite is polished by more than 30 complex polishing processes. It will not be scratched by knives and shovels, infiltrated by liquid substances, yellowing and discoloration will not occur. Daily cleaning only needs to be washed with clean water, which is simple and easy. Even after a long time of use, its surface is as bright as the newly installed table, without maintenance.
4、It won’t burn
Natural quartz crystal is a typical refractory material, its melting point is as high as 1300 degrees, 94% natural quartz made of quartzite completely flame retardant, will not cause combustion due to contact with high temperature, with high temperature resistance.
5、Non toxic and non radiation
The surface of the quartz stone is smooth, flat and no scratches are retained. The dense and non-porous material structure allows bacteria nowhere to hide, and it can be in direct contact with food, safe and non-toxic.
The high-quality quartz adopts the selected natural quartz crystal mineral, the content of SiO2 is more than 99.9%, and the impurity is removed and purified in the manufacturing process. The raw material does not contain any heavy metal impurities that may cause radiation. 94% quartz crystal and other resin additives make the quartz free from the risk of radiation pollution.
The main purpose
The main material of quartz stone is quartz. The combination of rich colors gives it the texture of natural stone and beautiful surface luster. Quartz stone countertops have various colors. Gobi series, crystal series, granite series and twinkling star series are more distinctive and can be widely used in public buildings (hotels, restaurants, banks, hospitals, exhibitions, laboratories, etc.) and home decoration (kitchen countertops, Washstands, kitchen and bathroom walls, dining tables, coffee tables, windowsills, door covers, etc.) are a kind of non-radioactive pollution, reusable environmental protection, green new building interior decoration materials. It should be pointed out that the quality of quartz stone is directly related to the content of resin. The higher the content of quartz in the quartz stone, the lower the amount of resin, the better the quality, the closer it is to natural, and the less likely to be deformed. Experts pointed out that when the content of resin in quartz stone is greater than 10%, its corresponding technical indicators will drop accordingly. At this time, quartz stone can no longer be called real quartz stone.