How is quartz stone formed and what are the characteristics of quartz

Quartz process:MagmaIn the process of intrusive evolutionary activities, due to the change of temperature, pressure and other conditions, SiO2-rich hydrothermal fluids are differentiated, which penetrate into the metamorphic rock series along the bedding and fractures, or invade along the contact fracture zone of the early magmatic rocks, forming veined quartzite ore bodies.

Quartz is made up of the simplest silica.

Vitreous luster, without cleavage surface, but with shell-like fractures. The microcrystalline quartz is called chalcedony.

chalcedony), agate or jasper.

Pure quartz is colorless, but often contains transition elements.

impurities and appear in different colors. Quartz is very stable and does not easily weathered or change into other minerals. According to the degree of SiO2 crystallization, it can be divided into monocrystalline quartz and polycrystalline quartzite jade.

Some of the features:

Scratch not flower: quartz stone has a quartz content of up to 94%, quartz crystal is a natural mineral second only to diamond in nature, and its surface hardness can be as high as Mohs hardness.

It is much larger than the knives and shovels used in the kitchen, and will not be scratched by them.

Non-polluting: Quartz stone is manufactured under vacuum conditions.

1. Dense and non-porous composite materials, with their quartz table.

In the face of the kitchen acid and alkali has a good anti-corrosion ability, the daily use of liquid substances will not penetrate its inside, the liquid placed on the surface for a long time only needs to be wiped with a rag with clean water or clean and bright detergents, if necessary, you can use a blade to scrape off the surface of the retention.

Not old: The shiny surface of quartz stone has undergone more than 30 complex polishing processes, which will not be scratched by a knife and shovel, will not penetrate into liquid substances, and will not produce problems such as yellowing and discoloration. Even after a long period of use, the surface is as bright as the new countertop, and there is no need for maintenance and maintenance.

In the process of intrusive evolutionary activities, due to the change of temperature, pressure and other conditions, the magma differentiates into SiO2-rich hydrothermal fluids, which penetrate into the metamorphic rocks along the bedding and fractures, or invade along the contact fracture zone of the early magmatic rocks, forming veined quartzite ore bodies.

The types of quartz can be divided into, pink quartz, green quartz, white quartz, and yellow quartz.

Quartz stone can be divided into ordinary quartz sand, refined quartz sand, high-purity quartz sand, fused silica sand, and silica powder.

<> quartz characteristics are as follows:

Color: colorless, translucent crystal, visible to the naked eye as milky white; Hard blindness: quartz has a strong hardness, several times that of iron; Shape:

Quartz is a column with a sharp corner at one end and is a transparent or translucent, slightly round, slippery slag irregular particle with a brightness like glass or grease.

<> quartz is characterized by the following: posture.

Color: colorless, translucent crystal, milky white when visible to the naked eye; Hardness: Quartz has a strong hardness, several times that of iron; Shape: Quartz is a column with sharp corners at one end, and is a transparent or translucent slightly round-like irregular particle of celery, with a brightness like glass or grease.

Also known as "Yingde stone", it is produced in Yingde, Guangdong. It has a long history of mining and appreciation, as early as the Song Dynasty, the stone has been listed as a tribute to the Song Dynasty royal family. It not only has the characteristics of "wrinkled, thin, leaky, and transparent", but also has great ornamental and collection value.

In addition, it is listed as one of the "four famous stones of the garden" in China, along with Taihu Lake stone, Lingbi stone and Kunshi.

Quartz is a metamorphic rock with a quartz content of more than 85%, which may be formed by the recrystallization of quartz sandstone or other siliceous rocks through regional metamorphism; It is also possible that quartzite is formed by thermal contact metamorphism of siliceous rocks near magma.

Quartz, an old term in geology, is one of the main rock-forming minerals, a mineral composed of silica. Pure quartz is colorless and transparent, and it is colored in various colors due to the presence of trace pigment ions or fine dispersed inclusions, or the presence of color centers, and the transparency is reduced; There are many types of quartz. The raw materials used in daily ceramics are vein quartz, quartz sand, quartzite, chain celery sandstone, silica, opal, diatom shed soil, etc.

When silica crystallizes perfectly, it is crystal; After silica gelatinization and dehydration, it is agate; The aqueous colloids of silica become opal when solidified; When the silica grains are less than a few microns, chalcedony, flint, and secondary quartzite are formed.

Characteristics of quartz: the appearance of quartz is often white, milky white, gray-white translucent, Mohs hardness is 7, section glass luster or fat luster, the specific gravity varies according to the crystal form, varies between to , and the physical and chemical properties are very stable. Quartz crystal belongs to the trigonal crystal system of oxide minerals, that is, low-temperature quartz, is the most widely distributed mineral species in the quartz group of minerals.

Quartz in a broad sense also includes high-temperature quartz. Quartz block, also known as silica, is mainly a raw material for the production of quartz sand, as well as a raw material for quartz refractories and firing ferrosilicon.

Quartz is one of the most widely distributed minerals on the earth's surface, and it is also quite versatile. As far back as the Stone Age, people used it to make simple production tools such as stone axes and arrows to hunt food and fight enemies. Piezoelectric quartz sheets are used as standard frequencies in quartz clocks and electronic equipment; The glass made after melting can be used to make optical instruments, glasses, glass tubes and other products; It can also be used as industrial raw materials such as bearings, grinding materials, glass ceramics and other industrial raw materials for precision instruments.

Categories: Science & Engineering >> Engineering & Technology Sciences.

Analysis: Quartz glass is made of silica-containing substances, such as crystal and silica. Silica is made of raw material melted at high temperature.

Its silica content is much higher than that of ordinary glass, and the silica content of general quartz glass is in.

Quartz glass has excellent optical properties, not only visible light transmittance, but also ultraviolet and infrared rays.

Quartz glass is a good acid-resistant material, in addition to hydrofluoric acid and more than 300 degrees of hot phosphoric acid, at high temperatures, it can resist sulfuric acid, nitric acid, hydrochloric acid, aqua regia, neutral salts, carbon and sulfur and other erosion, its chemical stability is equivalent to 30 times of acid-resistant ceramics, equivalent to 150 times of nickel-chromium alloy and ceramics, it is resistant to high temperature, thermal shock, thermal expansion coefficient is particularly small.

Quartz glass has excellent electrical properties, at room temperature, its resistance is equivalent to 10 times that of ordinary glass, the dielectric loss to all frequencies is very small, and the insulation voltage strength is large.

Quartz glass is also resistant to cosmic radiation and impermeable to nuclear fission products.

Quartz glass is mainly used in electric light sources, semiconductors, new optical technologies, etc.

In terms of new light sources: high-pressure mercury lamps, long-arc xenon lamps, iodine-tungsten lamps, thallium iodide lamps, infrared lamps and germicidal lamps.

Semiconductors: It is an indispensable material in the production process of semiconductor materials and devices, such as the crucible of growing germanium, silicon single crystal, boat dish or coarse furnace core tube and bell cover.

In the field of new technologies: use its excellent performance of sound, light and electricity, ultrasonic delay lines on radar, infrared tracking direction finding, infrared imaging, communication, spectrographs, spectrophotometer prisms, lenses, reflective windows of large astronomical telescopes, high-temperature work windows, reactors, radioactive devices; nose cones, nozzles and radomes for rockets, missiles: radio-insulating parts of artificial satellites, radiation; Thermal scales, vacuum adsorption devices, precision casting, etc.

Quartz glass is also used in: chemical industry, metallurgy, electrician, scientific research, etc.

In the chemical industry: it can be used for the combustion, cooling and ventilation of high-temperature acid-resistant gas, the evaporation of acidic solution, the collection of cooling absorption, the storage and storage, the preparation of distilled water, hydrochloric acid, nitric acid, sulfuric acid and other physical and chemical experimental supplies. In terms of high-temperature work:

Can be made of optical glass, crucible into fluorescent politeness, electric furnace core tube, gas combustion radiator, in optics: quartz glass and quartz glass wool can be used as rocket nozzles, spacecraft heat shields and observation windows, etc., in short, with the development of modern science and technology, quartz glass has been more widely used in various fields.

Quartz stone is a new type of stone synthesized by more than 90% of quartz crystals plus resin and other trace elements, which is a large-scale plate pressed under certain physical and chemical conditions by transporting special machines, and its main material is quartz.

Quartz is a mineral that easily turns into a liquid when exposed to heat or pressure. It is also a fairly common rock-forming mineral in Xinjingbo, and is found in all three major types of rocks. Because it crystallizes the latest in igneous rocks, it usually lacks a complete crystal plane and is mostly filled in the middle of other pre-crystallized rock-forming slippery minerals.