Magnetic iron ore

ore introduction

Name Source

According to Greek "phrhotes", "Red" refers to its color.

Chemical composition

The chemical composition of magnetic iron ore has more than the FES theoretical content contains more S, S, and the amount of S is 39-40%, and the mixture is Ni and CO. The most common, often the type of iron.

Category

Sulfide - single sulfide - magnetic iron 矿

crystal system and space group

320 ° C or more stable The high temperature hexagonal variant, the spatial group is P63 / MMC; 320 ° C is stable, the spatial group is C2 / C

cell parameter

high temperature Six-Party crystal system The variant is A0 = 0.343 nm, c0 = 0.569 nm; low temperature single-slant crystal variant A0 = 0.686 nm, b0 = 1.190 nm, c0 = 1.285 nm

Physical properties

Form

The crystal form is six-square-shaped, columnar or barrel, but rarely see. Typically, the meticulous assembly

specific gravity

4.6-4.7 g / cm3

Other properties

have conductivity and magnetic properties; The identification of the feature dark bronze yellow, with magnetic

due to production

distributed in various types of endogenous deposits. In the copper-molybdenum sulfide laminate bed in the primary rock body, it is one of the main minerals,

is a nickel-yellow iron mine, brown-yellow copper mine; in contact with the minerals; Sometimes it forms a huge gathering, with its symbiosis, minerals, brass ore, yellow iron ore, magnetite, toxic sand, etc. In the oxidation belt, it is extremely easy to decompose into a brown ore

Basic data ​​h2>

crystal chemistry

theoretical composition (WB%): Fe 63.53, S 36.47 . In fact, sulfur can reach 39 to 40%, due to partial Fe2 instead of the FE3, to maintain the electricity price

balance, air space in Fe2, called absence. Therefore, the general formula of the magnetic iron ore is often expressed in Fe1-XS. The x represents the number of deflation of Fe atom (structural space), general X = 0 to 0.223. There may be a small amount of Ni, Co, Mn, and Cu instead of Fe, and there are Zn, Ag, In, Bi, Ga, platinum group elements, etc. are mechanically mixed.

Structure and morphology

Six-Party crystal system, A0 = 0.349 nm, C0 = 0.569 nm; z = 2. Arsenic nickel mine structure.

Rehabilitation double cone class, D6H-6 / mmm (L66L27PC). The crystal is generally plated, a small number of tapered, columnar. Common single shape: parallel double-sided C, hexagon column M, six-party double cone R, U, S. According to a double crystal or triple-clad crystal. It is often granular, block or soaked collectors.

properties

dark bronze yellow, with brown color. Bright ash black. Metallic luster. The solution is not complete. Crack development. Brunette. Hardness is 3.5 ~ 4.5.

relative density is 4.60 ~ 4.70. Unmagnetic.

Production and combination

is widely produced in an endogenous deposit. In the sulfide deposit associated with the base, ultravanic rocks, the main minerals. In the Cu-Ni sulfide deposit, it is often close to nickel-yellow iron ore and brass ore. In contact with metamorphic deposits, the product of the eveninga night stage, combined with brass mine, yellow iron ore, magnetite, flash zinc ore, toxic sand. In hot liquid deposits, often with black tungsite, glow mines, toxic sand, square lead mine, flash zinc mine, brass mine, quartz and other symbiosis.

Identification Characteristics

dark bronze yellow, small hardness, weak magnetic properties. Flame Burning Follow Magnetic Black Block.

Industrial Applications

Mainly used to extract sulfur, produce sulfuric acid. When containing Cu, Ni (containing nickel-containing ferromonite, copper-containing magnetic magnetic mine), it can be used.

can be used in purification of heavy metal wastewater.

China Gansu, Jinchuan, Jilin, China, is rich in magnetite in the copper nickel sulfide deposit, the most famous origin in the world is Canada Ontario. Sadbury.

Main use

It is used to make sulfuric acid raw materials, but its economic value is far less than that of the yellow iron ore; usually in a plurality of metal deposits, but mainly Enficient in the copper nickel sulfide deposit, compiry with nickel-yellow iron mines, yellow copper mine. The magnetic iron ore is easy to weather into the brown ore. The ingredients contain from 39 to 40%, which can be used to make sulfuric acid. When the ingredient is high, it can be used as a nickel ore. Can be used to purify the weight of the heavy metal wastewater. Widely used in petrochemical, metallurgy, rubber, paper, military, food and other industries. Can be used as an ore that refines "iron", "sulfur". It is mainly used as a raw material for producing sulfuric acid, sulfur, sulfite, sulfite, and the like, widely used in petrochemical, metallurgy, rubber, paper, military, food and other industries.

Origin

Poster

Magnetic iron ore can be seen in various endometric deposits! Copper molybdenum sulfide magma in the base rock body into the deposit: is the main cause of magnetic iron ore, often combined with brass ore (CHALCOPYRITE), Nickel-yellow iron ore (Pentlandite, is an important nickel minery) / p>

Contact ore deposits

Sometimes a large number of magnetic iron ore gathering, symbiosis minerals have yellow iron mines, magnetite, brass mine, arsenic Caucasite ( Toxic sand, arsenopyrite, etc.

oxidation belt

magnetic iron ore is extremely easy to transform into a limonite!

Origin

Sudbury, Ontario, is the first type of deposit, the United States, Tennessee Ducktown, Chihuahua, Mexico, and Brazil, Su Russia, Germany, Sweden, Finland, Norway and other places. In Taiwan, the trace of magnetic iron ore can be found in the copper gate of the Jinbang Shan Lead and Zinc Mining, Papaya - Copper Wenlan Copper Mine and the like; but in the Jinbangshan area, only the magnetic iron ore is only Micron (μm) size; as in the copper door, the magnetic iron ore and the yellow iron ore in the green sheets and silicon slices of the green sheet and the silicon slices are the source of extracting sulfur.

Other information

Special nature

In general, magnetic iron ore has three considerable specific properties. First, the composition of magnetic iron ore is special, and its chemical formula is Fe (1-x) s (x = 0 ~ 0.17), that is, the sulfur content of the sulfur is about 20%, if the number of atoms is changed, Each fifty iron atom has fifty to fifty-five sulfur atters at the same time.

In nature, minerals with "ferromagnetic" except for magnetic iron mines, there are magnetite (Fe3O4), magnetic celenite (-fe2O3) and titanium magnet (FeO -Tio2-Fe2O3). These ores we generally be "compassion" in ancient China, which is also the magnet today; how do you know? Before Qin Han, there is no "magnetic" word in China, then what is the meaning of "Ci Shi" this name? Eastern Han Dynasty Hooded: "Stone, Tie's mother is also. Therefore, there is a compassion, so it can lead its own; the stone is not compassionate, it can't lead it." In other words, the Chinese ancients is more magnet. The phenomenon of ironing iron, so the magnet is called "Ci Stone".

The symmetrical state of the crystallization of magnetic iron ore has two: When the sulfur content is low, the chemical composition approaches FES, the crystal structure is symmetrical, opposite, high sulfur content. The crystal is a monocye-symmetric type; in nature, sometimes we can see these two structures appear in the same magnetic iron ore. However, think about it, after all, this is two different crystal structures and symmetry, and it is also a different chemistry, so in fact, the magnetic iron ore should be a collection of two minerals, but the mineralologists will still They are considered as the same mineral.

The magnetic iron mine is as named, it is a magnetic mineral! It is in nature, second only to the most common magnetic minerals outside the magnetite! Using magnetic, we can simply distinguish between magnetic iron ore and brass mine, yellow iron ore, nickel-yellow iron ore, and white iron ore (MARCASISITE), but in fact, each The magnetic size of the magnetic iron ore is not consistent. Some magnetic force, the magnetic force, the size of the magnetic force depends on the amount of iron empty in the internal structure of the mineral structure, the more vacancies, the stronger the mine magnetic force. In the meteorite, there is no magnetic magnetic mine mine variety, and it is also known as "Slim" or "Troilite".

The magnetic iron mine is high and a slight magnetic property. Since the magnetic properties are related to the ingredients of its own (usually the aid, the lower the magnetic resistance), and it is also related to the vacant distribution of iron in the structure, if the regular distribution, the magnetic resistance is strong, and that is weak.

Collection specimen

7

Russia

media report

The topic group led by Wang Qihua, the research and development center of Lanzhou Chemical Physics, Chinese Academy of Sciences, the first-time, eight-facing and spherical yellow iron mine Single crystal selection synthesis. This method does not require expensive single source precursors or toxic solvents compared to conventional preparation methods, and achieves control of crystal morphology.

According to this, the study also found that product morphology depends on the type of surfactant, sodium hydroxide and sulfur, and proposes possible growth mechanism. The study uses the method to make the uniform yellow iron mineral and cubic crystal synthesis possible, and has guiding significance for the preparation of other metal sulfide.

Natural boundary is only less iron and sulfur, and there is a yellow iron ore, magnetite iron ore, magnetic iron ore, and the like. Overall, the ironulline compound has unique magnetic and electrical properties, which are closely related to the chemical measures between iron and sulfur and their crystal structure. In these important inorganic materials, due to its unique photoelectric performance, Huangding ore is widely used in photovoltaic solar cells, lithium-ion battery electrode materials and the like. In addition, the yellow iron ore is also a key role in the primary choice of ore and coal separation.

According to the introduction, this study has been supported by the National Key Basic Research Development Plan, the National Natural Science Foundation of China and the important direction project of the knowledge innovation project of Chinese Academy of Sciences.

Collection information