Chinese name: Quartz stone
English name: Quartzite silica mineral composition is SiO2. Mainly refers to the low temperature response time (α-response time) of the widely distributed tripartite system. When the temperature is higher than 573℃, it becomes hexagonal high temperature response time (β-response time). Cryogenic crystals are usually hexagonal cylinders with spires. There are horizontal stripes on the cylinder, and there are differences between left-handed crystals and right-handed crystals. Twins are very common, and the most common ones are dove twins and Brazilian twins.
Usually crystal family or granular and massive aggregates. Pure colorless and transparent, but mostly because of containing trace pigment ions or finely dispersed color inclusions, or because of colored centers, the transparency is reduced, showing various colors. Glass has luster, and the fracture surface is often oily luster. Mohs hardness is 7 and specific gravity is 2.65. The shell is broken. It has strong piezoelectricity and optical rotation.
Edit the physical crystal system of this paragraph: hexagonal crystal system.
Crystal: equiaxed crystal, columnar crystal and hexagonal bipyramid crystal.
Aggregate shape: massive, coarse-grained, bell-shaped,
Hardness: Mohs hardness is 7.
Cleavage/fracture: Shell fracture
Gloss: glass luster
Color: None, white with a little gray, yellow to orange, purple, deep purple, pink, taupe, brown and black.
Stripe: white
Specific gravity: 2.65 ~ 2.66
Others:
(1) is brittle.
(2) Thermoelectricity.
(3) refractive index1.533 ~1.541,birefringence difference of 0.009 and dispersion of 0.0 13.
(4) It has a strong piezoelectric characteristic, that is, striking hard will produce sparks, which is the method of striking a flint to make a fire.
(5) The common inclusions are: crystallized-mainly rutile; Grass becomes crystal-mainly tourmaline; There are liquid inclusions in the water gallbladder crystal-time; Light blue rutile needle with blue timing; Milk is in season-turbidity caused by small water holes; Green chronological-composed of flaky or fragmented chlorite, sometimes it may be green needle-like actinolite; Shi Ying contains green or reddish brown mica flakes, also known as Shi Yaoying, commonly known as Dongling Stone. The common smoky black to dark brown smoky crystals are mainly due to the large amount of radioactive uranium and thorium contained in these rocks.
Features and advantages 1, scratch-free
The timely content of quartz stone is as high as 94%. Seasonal crystal is a natural mineral whose hardness is second only to that of diamond, and its surface hardness can be as high as Mohs hardness of 7.5, which is much larger than sharp tools such as knives and shovels used in the kitchen and will not be scratched by it.
2, no pollution
Quartz stone is a kind of compact non-porous composite material made in vacuum. Its quartz surface has excellent corrosion resistance to acid and alkali in the kitchen, and liquid substances used in daily life will not penetrate into it. The liquid left on the surface for a long time only needs to be wiped with clean water or a clean and bright cleaning agent with a rag. If necessary, the residue on the surface can be scraped off with a blade.
3, not old
The shiny surface of quartz stone has undergone more than 30 complicated polishing processes, and it will not be scratched by knives and shovels, infiltrated by liquid substances, and will not be yellowed and discolored. Daily cleaning only needs to be washed with clean water, which is simple and easy. Even if it is used for a long time, its surface is as bright as the newly installed countertop and needs no maintenance.
4. It won't burn.
Natural aging crystal is a typical refractory, and its melting point is as high as 1300 degrees. Quartz stone made of 94% natural and timely is completely flame retardant, will not burn due to contact with high temperature, and has incomparable high temperature resistance characteristics such as artificial stone.
5, non-toxic and radiation-free
Quartz stone surface is smooth and smooth, without scratches. Dense and non-porous material structure, so that bacteria have nowhere to hide, can directly contact food, safe and non-toxic!
High-quality quartz stone is made of selected natural timely crystalline minerals, with a silica content of over 99.9%, which is purified in the manufacturing process. Raw materials do not contain any heavy metal impurities that may cause radiation, and 94% timely crystals and other resin additives protect quartz stone from the danger of radiation pollution.
Due to the difference of particle size, color and inclusion, there are many kinds of classification: ① Crystalline: colorless and transparent crystals; Purple amethyst (commonly known as amethyst); Smoke yellow, smoke brown to nearly black tea crystal, smoke crystal or ink crystal; Pale yellow and transparent topaz; Rose red roses are in season (commonly known as hibiscus stone); Milk is in season. Sandstone with speckled flash due to inclusion in scales such as hematite or mica. ② The aphanitic varieties are: chalcedony (chalcedony) composed of fibrous microcrystals; Colloidal agate; Tiger's eye stone made of timely fiber asbestos. (3) The aphanitic variety is composed of granular microcrystals, often containing other minerals, opaque, mainly flint, gray to black (commonly known as flint). Jasper is dark red, green yellow, turquoise and other colors because it contains iron oxide impurities. Large-scale chronotropic crystals mainly occur in pegmatite caves; Blocks often appear in hydrothermal veins; Granular chronology is the main mineral component of many rocks such as granite, gneiss and sandstone. Except crystal, agate and so on. Used as gemstones or process materials, relatively pure materials are widely used as glass raw materials, abrasives, silica refractories, etc. Impure seasonality is an important building material.
Main uses The main material of quartz stone is timely. Rich TINT makes it have the texture of natural stone and beautiful surface luster. Quartz stone countertops have various colors, and Gobi series, crystal series, granite series and shining star series are more distinctive. They can be widely used in public buildings (hotels, restaurants, banks, hospitals, exhibitions, laboratories, etc. ) and home decoration (kitchen countertops, washstands, kitchen walls, dining tables, coffee tables, window sills, door covers, etc.). This is a kind of non-radioactive pollution. It should be pointed out that the quality of quartz stone is directly related to the content of resin. The higher the timely content in quartz stone, the lower the resin content, the better the quality, the closer it is to nature, and the less prone to deformation. Experts pointed out that when the resin content in quartz stone is greater than 10%, its corresponding technical indicators will be reduced, and quartz stone at this time can no longer be called real quartz stone.
Variety and identification: 60% of the crystal is "silicon dioxide", and the color of the crystal is caused by various trace metals except silicon dioxide. In the natural environment, most crystals are "born" with calcite, pyrite, pyroxene, mica flakes of various colors, Biqian, granite, rutile and other minerals. , thus forming some scenes that are suspected to be true, that is, the so-called "different crystals", which increases the interest and value of collecting crystals.
Most crystals grow underground. The growth process requires a large amount of groundwater containing saturated silicon dioxide, the temperature is between 550℃ and 600℃, and the pressure is two to three times higher than atmospheric pressure. After a long time, it becomes a hexagonal crystal.
It is a mineral when it is heated or squeezed, and it can easily become a liquid. It is also a very common rock-forming mineral, which can be found in all three types of rocks. Because it crystallizes at the latest in igneous rocks, it usually lacks a complete crystal plane, and most of it is filled between other rock-forming minerals that have crystallized before. The timely composition is the simplest silicon dioxide (sio2), which is glassy and has no cleavage plane, but conchoidal fracture. Microcrystal is called chalcedony, agate or jasper. Pure time is colorless, but it often contains impurities of transition elements, so it presents different colors. It is very stable in time and is not easy to weather or become other minerals. Silicon is located in the fourth group of the periodic table of elements, widely distributed in the earth's crust, and occupies the second place in the abundance distribution order of all elements, second only to oxygen. Silicon is also a typical oxygen-loving element, which mainly combines with oxygen to form silicon-oxygen tetrahedron SiO4- 4-4, and produces different silicate minerals through the combination of various forms of silicon-oxygen tetrahedron. Among gem minerals, silicate accounts for more than 80% and is distributed in the form of free silicon-silica. But also very stable, and it is the most common and important rock-forming mineral in nature. It is also a kind of gem with a large number of applications and a wide range in the jewelry industry. There are many kinds of gems with silica as the main component, each with its own characteristics. According to the crystallization degree of SiO2 _ 2, it can be divided into crystalline single crystal, polycrystalline quartzite jade, aphanitic chalcedony, agate, Australian jade, jasper, wood fossil, silicified wood, amorphous opal and natural glass.
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