What is Chondrit meteorite?

Chondrit is a rock meteorite (non-metallic) that has not been altered due to melting or metamorphosis of the mother's body.

Chondrit is the most common meteorite falling to Earth with estimates of the ratio between 85.7% and 86.2% of meteorites falling to Earth. There are more than 27,000 chondrit collected in the world. The largest chondrit discovered, weighing 1770kg, is part of the meteorite rain in Jilin, China in 1976. Chondrit may fall from a single tablet, to an unusually heavy rain of thousands of stones, as happened in the autumn of 1912 in Holbrook, an estimated 14,000 stones poured into northern Arizona, USA.

Chondrit is formed when many types of dust and small particles are present from the beginning in the Solar System , forming into ancient asteroids, however, the type of accumulation is small enough to not melt. . It is referred to as "cosmic sediment" , closing in it information about the formation of the solar system. Their study provides important clues to understanding the origin and age of the Solar System, the synthesis of organic matter, the source of life or the presence of water on Earth.

Chondrit meteorite.

Chondrit forms when many types of cosmic dust and particles congregate to form asteroids in the ancient solar system. The small size leads to no melting or metamorphism, ie, no cooling and separation of layers with different physicochemical states like Earth. The age sign shows in the fact that the prevalence of unstable elements in chondrit is similar to that found in our Sun and other stars in the Milky Way.

Chondrit has the main mineral composition of olivine, pyroxen and plagiocla, but may also (except in carbon chondrit) have nickel metal, iron, and iron sulfide (troilite or iron pebble). One of their characteristics is the presence of chondrule, which is a silicate circular particle formed with different minerals, usually between 20% and 80% by volume of a chondrit. Iron meteorites with low iron and nickel content can turn off chondrit. Still other non-metallic agar, the Asian chondrit (achondrite), is a type of chondrule, which is more recently formed, for example, an asteroid's impact fragment.

Although internal heat does not make chondrit asteroids hot enough to melt, many of them still have a period of high enough temperature leading to stone metamorphism. The most likely internal heat sources are energy by decaying radioactive isotopes already present in the solar system at the time of formation, but with a short half-life (less than a few million years). Others contain a significant amount of water, creating hydrated rocks and there is a case of clay formation.

Finally, the collision between two asteroids occurs, leading to breakage, possibly with scratches. Collision heat and pressure create local melting, and form high pressure minerals. The meteorite pieces burst into different directions with the inherent orbit, going to places like Earth.