Meteorite refers to the meteoroid remnant nucleus that reaches the surface after ablation from the interstellar space through the atmosphere. The shape of the meteorites varies, and the size of the individual varies. The surface of the meteorite generally has a thin (less than 1 mm) black or dark brown frit. It is the surface of the meteorite that melts during the landing in the atmosphere due to high temperature. It is cooled and solidified when lowered.
The meteorites are generally divided into three categories: stone gangue, iron gangue and stone iron gangue. The meteorite is mainly composed of silicate minerals. The meteorite is a meteorite mainly composed of iron-nickel metal. The meteorite is a vermiculite with half of iron and stone. Dendrobium can be further divided into relatively primitive chondrites and differentiated aspheric gangues depending on whether or not spherulites are present.
1) Dendrobium : It is the most abundant type of rock in the fall, similar to some rocks on the earth, but the weight of the meteorite is slightly heavier. If the meteorite is not broken for a long time, the most common ordinary chondrite can be seen inside the distribution of bright silver metal iron particles, and the silicate pellets with more content can also be observed.
2) Iron meteorite : The iron meteorite is mainly composed of iron-nickel metal. It has an irregular shape and a high density. The iron meteorite is very magnetic. There are some “fingerprintâ€-like structures on the surface of some fresh iron meteorites. Below are some pictures of iron meteorites.
3) Stone iron meteorite : There are relatively few stone iron meteorites, mainly including two types: medium iron meteorite and olive iron. Olive ferroniobium is mainly composed of light green-yellow olivine crystals and iron-nickel matrix. In other words, the medium iron vermiculite is composed of massive and veined metals, and does not contain spheroidal basalt and glass matrix.
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