Calcite & Fluorite
Calcite(marble) is a rock specimen collected in North Hamgyong Province
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Description
Brief introduction
| English name: calcite. Common name: generous solution, small square solution Formula :CaCO₃ Molecular weight: 100.09 CAS number :471-34-1 Density 2.60~2.8g/cm³ Mo hardness :3 Main composition: Ca(calcium),C(carbon),O(oxygen) three elements Degree of cleavage: three groups of polar complete cleavage | |||
| The color of calcite varies with the impurities contained in it, such as light yellow, light red, brown black and so on when containing iron and manganese. But generally white or colorless. One of the curious properties of calcite, which is also called Iceland SPAR, is that it is possible to see double images of objects through it. Therefore, Iceland SPAR is an important optical material. Calcite, the main mineral of limestone and marble, has many uses in production and life. We know that limestone can form karst caves, cave stalactites, stalagmites, white marble and so on are actually composed of calcite. | |||
| Often containing Mn, Fe, Zn, Mg, Pb, Sr, Ba, Co, TR and other homomorphic substitutes; When they reach a certain amount, manganese calcite, iron calcite, zinc calcite, magnesium calcite and other varieties can be formed. In addition, the crystal is also common brucite, dolomite, iron hydroxide and oxide, sulfide, quartz and other mechanical compounds. For example, stalactites (stalactites are karst products, which refer to different forms of calcium carbonate sediments such as stalactites, stalagmites, and stone columns formed in caves in carbonate rock areas during a long geological history and under specific geological conditions. Stalactites are a type of dripping stone. Because of its long formation time, stalactites have important research value in ancient geological investigation. A cave formed by stalactites is called a stalactite cave. |
Crystal Structure
| Tripartite system; -R c; Rhombohedral cell: arh=0.637 nm,α=46°07 ‘; Z is equal to 2; If converted into hexagonal (dual body-centered) lattice, then: ah=0.499 nm,ch=1.706 nm; Z is equal to 6. Calcite type structure is described in mineralogy Chapter 22 overview. The crystal structure of calcite can be derived from NaCl structure. It is assumed that the crystal structure of NaCl is flattened along a cubic axis, and the carbonate ions and Ca ions are placed in the positions of the Cl ions and Na ions of the deformed NaCl structure, respectively, and the plane triangular carbonate ions are arranged vertically in the cubic axis, that is, the crystal structure of calcite (see figure [crystal structure of calcite]). Common intact crystals. It has a variety of forms and more than 600 kinds of different polymers. It is mainly columnar in parallel development [0001], plate-like in parallel development {0001}, rhombohedron or polytripartite hemitrigonhedron in various states (FIG. H-1). Calcite often forms contact twin crystals according to (0001), and more often forms flake twin crystals according to (01 2). The orientation of this flake twin crystal pattern on the cleavage plane is different from that of dolomite (Figure H-2). In nature, the appearance of this flake twin crystal can be used to indicate that the formation of calcite has been subjected to geological stress. | |||
| Colorless or white, sometimes Fe, Mn, Cu and other elements dyed light yellow, light red, purple, brown black. The colorless and transparent calcite is called icespar. Cleavage {10 1} complete; Under the influence of stress, slippage occurs along the direction of {01 2} polymer twin-crystal. Hardness 3. The relative density is 2.6 ~ 2.9. Some calcite have photoluminescence. Calcite is the most important rock – forming ore in the earth’s crust. calcite, mutagite, carbonate mineral, chemical composition: CaCO₃, tripartite system, three divisions of full cleavage, cleavage; Glass luster. Completely transparent to translucent, usually white or colorless, due to the presence of base metal color free elements showing light red, light yellow, light tea, rose red, purple, a variety of colors, streated white, hardness 2.704–3.0, specific gravity 2.6 ~ 2.8, severe foaming in case of dilute hydrochloric acid, The crystal that is very pure and completely transparent is commonly known as Iceland Spar, which has strong birefringence function and the largest polarized light function. It is the natural crystal that cannot be manufactured by artificial and can not be replaced. It’s a crystal. It’s prismatic. |
Main use
| Calcite comes in a variety of crystal shapes and is the main mineral of limestone, marble and beautiful stalactites. Travertine may be deposited in springs and is often a secondary mineral in igneous rocks. In the almond holes of basalt flows, calcite veins are often filled in fractures of sedimentary rocks, or produced by biological processes in the form of shells or reefs. | |||
| Heavy calcium fine powder used in artificial stone, artificial floor tile, natural rubber, synthetic rubber, paint, plastic, composite new calcium plastic, cable, paper, Toothpaste, cosmetics, glass, medicine, paint, ink, cable, power insulation, food, textile, feed, binder, sealant, asphalt, building materials, felt building supplies, fireproof ceiling and daily chemical products as filling material. It can not only reduce the cost of products in various industries, but also improve the function and performance of related products, and increase the volume of products. It is one of the most widely used inorganic filler masterbatch. | |||
| Adding superfine powder of heavy calcium in cable skin can increase the insulation strength of cable 5-10 times; If the car chassis coating made of more than ten thousand mesh calcium carbonate ultrafine powder, it can make the car chassis have stronger anti-erosion ability than the steel plate; In the catalytic cracking of petroleum, molecular sieve, detergent, purifier, product modification, metal smelting, chemical synthesis, aerospace, high temperature superconductivity, machinery manufacturing and so on, especially in the high-tech field has a very wide range of applications. Superfine heavy calcium powder can be used as a basic material in these industrial sectors and is therefore in particular high demand. Therefore, heavy calcium powder has become the upstream and primary material of most industrial manufacturing, almost covering all light and light industrial production and manufacturing sectors. | |||
| In paper, plastics, rubber, cable, paint and coatings five applications, there are still a considerable number of light calcium carbonate powder. Light calcium powder is widely used in rubber, plastic, PVC pipe, profile, paint, paper, paint, sealant, daily necessities, medicine, feed as filler and reinforcing agent. It can not only increase the volume, reduce the cost, but also improve the processing performance of the matrix. It can also play the role of reinforcing, tensile, wear resistance, tear resistance, improve the luster and so on. | |||
| Therefore, calcium carbonate is not an ordinary filler, but is referred to as a functional filler. Light calcium carbonate high whiteness, good fluidity, is the largest filler for PVC pipe, profile, to increase the volume of products, stable size, heat resistance, smooth, luster and other aspects of the obvious effect, so as to reduce the cost, to achieve the purpose of improving the quality of products. Due to the complex production process and high price of light calcium powder, and the environmental pollution caused by the production of light calcium powder, the current trend of commercial development is to replace light calcium powder with heavy calcium powder as far as possible. | |||
| Because of its birefringence, ice SPAR is often used in polarizing prisms. If it is cut into columns in a certain way, it can be used as a microscope prism to test the optical properties of minerals. The quality requirements must be colorless and transparent, free from internal bubbles or cracks, free from double crystals or distortion, and at least 0.5 inch (12.5mm) cubic. General calcite used in chemical industry, cement and other industrial raw materials. Calcite is used as a flux in the metallurgical industry, and is used to produce cement and lime in the construction industry. Used in plastics, paper, toothpaste. Used as a filler in food. When calcite is added to glass production, the glass produced will become translucent, especially suitable for making glass lampshades. | |||
| Calcite is found in limestone mountains. It is widely found in Tertiary and Quaternary limestone and metamorphic rock deposits. Calcite is the earth’s rock-making ore, accounting for more than 40% of the total crust, there are no less than 200 kinds. Representative origin of China, Mexico, Britain, France, the United States, Germany. Every country in the world has mines. Calcite can be divided into Dafang calcite, Xiaofang calcite and Bingzhou calcite. China’s calcite is mainly distributed in Guangxi, Jiangxi and Hunan. Guangxi calcite is famous in the domestic market for its high whiteness and less acid insoluble substance. Calcite can also be found in the northeast of North China, but often accompanied by dolomite, whiteness is generally below 94, acid insoluble matter is too high |
General color
Beige Calcite
Blue Calcite
Cobaltian Calcite (South Africa)
Green Calcite (China)
Golden Calcit (China)
Orange Calcit (Canda,China,Mexio)
Utah Honeycomb Calcite
Main effectMain effect
1. Treat osteoporosis, prevent arteriosclerosis, memory decline, eliminate odor and moisture
2. Can filter air odor, is the famous “aroma master”. It can be used to improve smell and energy in the environment.
3. The original stone is placed in the car, kitchen, toilet, cabinet and other smelly places. He’s a deodorizer.
Additional information
| Weight | 24 kg |
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| Dimensions | 12 × 48 × 62 cm |
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