Iron stone meteorite how to tell the difference in simplicity

To determine whether a sample is a meteorite, you can think about it from the following aspects:

1. Molten crust on the surface: Meteorites once had to pass through the dense atmosphere on the ground of the fall, and the meteorite rubbed against the atmosphere during the descent process and caused high temperatures, causing the surface to melt and form a thin layer of molten crust. As a result, the newly descended meteorites have a black molten crust on the outside, about 1 mm thick.

2 Appearance Air Marks: In addition, because of the interaction between the meteorite and the air current, the meteorite will also leave many air marks on the surface, like a finger pressing a handprint.

3 Internal metals: Iron meteorites and stony-iron meteorites are composed of metallic iron, which has a high nickel content (5 10%). Chondrites also have metal particles inside, and fine metal particles can be seen on freshly cracked surfaces.

4. Magnetism: Because most meteorites are rich in iron, 95% of meteorites can be attracted by magnets.

5 Chondrites: Most meteorites are chondrites (90% of the total), and these meteorites contain many millimeter-sized silicate spheres called chondrites. Round chondrites can be seen on the freshly cracked surface of chondrites.

6 Specific gravity: The specific gravity of iron meteorites is 8 grams cm3, which is much larger than the specific gravity of the usual rocks on Earth. Chondrites also have a heavier specific gravity because they are rich in small amounts of metals.

Summary. The distinction between iron meteorites and iron ore is actually very simple, that is, by the method of elimination, as long as the possibility of iron ore and artificial products is ruled out, the result must be iron meteorites'. Iron ore is easy to distinguish, all iron ore in nature does not contain elemental iron, the composition is iron polyvalent oxides or sulfides, etc., this is the authoritative definition of mineralogy, no one has the qualification and power to overturn it.

Elemental iron will show a silvery-white luster no matter what the situation, and only iron sulfide and mirror iron ore can have a metallic texture, these two iron ores are obviously characterized by cleavage formed by crystallization, which is obviously different from the characteristics of iron meteorites without cleavage, and other types of iron ore have their own unique characteristics for easy identification.

How to distinguish iron meteorites from iron ore.

The distinction between iron meteorites and iron ore is actually very simple, that is, by the method of elimination, as long as the possibility of iron ore and artificial products is ruled out, the result must be iron meteorites'. Iron ore is easy to distinguish, all iron ore in nature does not contain elemental iron, the composition is iron polyvalent oxides or sulfides, etc., this is the authoritative definition of mineralogy, no one has the qualification and power to overturn it. Elemental iron will show a silvery-white luster no matter what the situation, and only iron sulfide and mirror iron ore can have a metallic texture, these two iron ores are obviously characterized by cleavage formed by crystallization, which is obviously different from the characteristics of iron meteorites without cleavage, and other types of iron ore have their own unique characteristics for easy identification.

Magnetite is strongly magnetic, and the crystals are often octahedral and a few are rhomboidal dodecahedron. The aggregate is often dense and block-like, with iron black color streaks and semi-metallic luster.

Hematite is an oxide mineral with Fe2O3 chemical composition and trigonal crystal system. It forms a homogeneous polymorphic form with equiaxed hematite.

The crystals are often plate-shaped; The aggregates are usually flaky, scaly, kidney-shaped, oolitic, lumpy, or earthy. It is reddish-brown, steel-gray to iron-black, and the streaks are cherry red.

Limonite Limonite is a hydrous iron oxide ore that is produced by weathering other ores and is most widely distributed in nature, but it is rare to have large burial deposits.

The chemical composition of pyrite is FeS2, which is the main mineral raw material for the extraction of sulfur and the manufacture of sulfuric acid. Its crystals belong to the equiaxed crystal system. The composition usually contains small amounts of cobalt, nickel and selenium, and has a NaCl-type crystal structure.

There are often intact crystal shapes, which are cubes, octahedrons, pentagonal dodecahedrons and their clusters.

Mirror Iron Ore Chemical Composition: Fe2O3; Shape: trigonal, massive, scaly; Exterior color: steel gray, iron black; streaks: pale red; It is magnetic when burned.

As long as the suspected iron meteorite in your hand is compared with the above iron ore specimens, you can basically identify it as an iron meteorite or iron ore.

Summary. Elemental iron will show a silvery-white luster no matter what the situation, and only iron sulfide and mirror iron ore can have a metallic texture, which is obviously characterized by cleavage formed by crystallization, which is obviously different from the non-cleavage characteristics of iron meteorites.

How to distinguish iron meteorites from iron ore.

The distinction between iron meteorites and iron ore is actually very simple, that is, by the method of elimination, as long as the possibility of iron ore and artificial products is ruled out, the result must be iron meteorites'. Iron ore is easy to distinguish, all iron ore in nature does not contain elemental iron, and the composition is polyvalent oxides or sulfides of iron, which is the authoritative definition of mineralogy.

Elemental iron will show a silvery-white luster no matter what the situation, and only iron sulfide and mirror iron ore can have a metallic texture, which is obviously characterized by cleavage formed by crystallization, which is obviously different from the non-cleavage characteristics of iron meteorites.

Summary.

Third, the classification is different.

1. Iron meteorite: mainly divided into hexahedral meteorite, low nickel content, no Weidmann pattern; Octahedral meteorite, usually with a high nickel content and Weidemann pattern, is the most common; Unpatterned meteorite iron, with a high nickel content, without Weidemann patterns, is very rare.

2. Iron ore: Iron exists in nature in the form of compounds, mainly divided into magnetite, hematite, limonite, and siderite.

How to distinguish iron meteorites from iron ore.

1. Different compositions 1. Iron meteorite: It is mainly composed of two minerals, iron and nickel, followed by a small amount of graphite, meteorite iron nickel ore, meteorite sulfur-chromite, meteorite iron, chromite and meteorite iron. 2. Iron ore:

Iron ore is an aggregate of minerals containing iron elements or iron compounds that can be economically utilized, mainly containing iron elements or iron compounds.

2. Different applications 1. Iron meteorites: Iron-nickel alloys have been used by many cultures to make tools and **, for example, the Inuit used part of the Cape York meteorite. 2. Iron ore: Iron ore is an important raw material, making tools and tools for iron and steel production enterprises.

3. Different classifications 1. Iron meteorites: mainly divided into hexahedral meteorites, low nickel content, no Weidemann pattern; Octahedral meteorite, usually with a high nickel content and Weidemann pattern, is the most common; Unpatterned meteorite iron, with a high nickel content, without Weidemann patterns, is very rare. 2. Iron ore:

Iron exists in nature in the form of compounds, mainly divided into magnetite, hematite, limonite, and siderite.

Hope it helps.

Send you a ** can't help you take a look.

Iron ore is not magnetic.

Iron ore is divided into hematite and magnetite, and magnetite can be sucked.

A few ores such as magnetite (mainly Fe3O4) or a small amount of elemental iron may be able to be attracted with magnets. If it is a non-ferromagnetic material such as hematite (mainly Fe2O3), then it is normal for magnetite to not be able to absorb it.

Hope it helps.

It's very sharp, and the glass is very fast, and it's a little silver, it's yellow, it's very heavy.

This requires the ingredients to be tested at the institution, and it is not visible to the eye.

I need to go to the testing agency there to get tested, what is the name of the testing agency.

Third-party testing agencies are fine.

Please tell me if there is a third-party testing agency in Jinan.

No. 74, Lishan Road, Lixia District, Jinan City, Shandong Province (Shandong Geology, Mineral and Gem Identification Center).

Hope it can help you, please give a thumbs up, thank you.

Most stony-iron meteorites have a density of about 3 cm cm. In metallic iron-nickel alloys, the nickel content is mostly 12% to 14%, so the Wiedmann structure appears.

The main component of the meteorite is iron, and the iron content is about 7000 or more. It is followed by silicon, aluminum, nickel, etc., and also contains a small amount of chromium, phosphorus, sulfur and carbonaceous components. The main mineral components of meteorites are nickel markerite, clinopyroxene and quartz, and the secondary mineral components are meteorite, meteorite iron-nickel ore, chromite, graphite and magnetite.

Meteorites are a relatively rare type of meteorite, accounting for 2% to 4% of the number of meteorites. Iron-nickel and silicate minerals are comparable (30% to 65%). The main minerals are olivine, various pyroxenes, ironstone and nickel grains.

Magnets don't work? There should be no stone meteorite, metal meteorite, or meteorite iron with metallic luster, meteorite is not necessarily iron, there are other metals, quartz, etc. I really can't try calcination and see the changes.

Stone-iron meteorites, glass meteorites, nickel meteorites. You can take a magnet and try it. There is also a meteorite night pearl.

Hematite.

1. Hardness. Hardness is an important physical property of minerals. Different minerals have different hardness. The Leeb hardness is specified as 10, and the hardness of iron ore is generally between 5---6, of course, the hardness of different iron ores is also different.

But there are rarely more than 6. The hardness of iron meteorites and stony iron meteorites is generally between --7, which is slightly higher than the hardness of glass (the hardness of glass is ). Therefore, it can be engraved with glass.

If it can be scratched by glass, it means that the hardness is less than that of glass, and it is more likely to belong to iron ore. If you can scratch the glass, it means that the hardness is greater than that of glass. Whether it is a meteorite or not should be considered.

Limonite. Second, the wrapping layer.

The formation of the cladding layer of iron ore is a very complex physicochemical process. There is deposition, there is adsorption, there is crystallization and complex chemical reactions. A thin layer of crust is formed on the surface of iron ore, which is very similar to the molten crust of meteorite, but the difference is in color, hardness and structure.

These are for a beginner hobbyist or collector. It's hard to tell the difference. Therefore, some people will think of iron ore as a meteorite, but for a meteorite enthusiast or collector who is familiar with its characteristics, it can be seen at a glance.

Magnetite. 3. Magnetism.

Magnetite in iron ore is strongly magnetic. The magnetic properties of hematite are medium. Because, hematite contains magnetite to a greater or lesser extent.

In general, siderite and limonite are non-magnetic or weakly magnetic, because the amount of magnetite contained in different mining areas varies greatly. Some don't even contain magnetite. In addition, mirror iron ore is more like a meteorite, because it has strong magnetism and many small white spots.

Iron ore slag. Fourth, the air mark and streamline pattern of iron ore.

Does iron ore have air marks and melt flow lines? The answer is yes; No! However, there may be surface structures that resemble air marks and melt flow patterns.

For iron ore in deserts, rivers, and ore outcrops, it is entirely possible to form structures that resemble air marks. This is due to wind erosion in the desert and the impact of sand and water in the river. The melt-flow-like structure on iron ore is formed by weathering, sedimentation and adsorption of the structure of iron ore itself.

For these, it is easy for an experienced person to see with the naked eye.

When an iron ore has the above characteristics, can you tell if it is a meteorite or an iron ore? If you can judge, then you are a meteorite enthusiast with a high level. In general, you will not be deceived.

Iron ore mined on iron ore is a good difference. But iron ore detected in ravines, on hillsides, in rivers, in the desert is not so easy.

Iron ore is an oxide of iron (Fe2O3 or Fe3O4);

The average density of meteorites is 3, and the main component is silicate; Meteorite has a density of , mainly composed of iron and nickel; The meteorite composition is somewhere in between, with a density in between.

Meteorites will rub with the air and burn when they enter the earth from outside the sky, and only remnants will be left on the ground, and there will be obvious traces of burning on its surface, while there will be no iron ore surface;