The process of falling: On the morning of February 12, 1947, around the Sikhote-Alin in the Primorsky Krai of Russia, the witness observed a big fireball that was more brilliant than the sun and fell from the north. Bright flashes and deafening roaring explosions. It is estimated that the meteorite was flying at a speed of approximately 14 kilometers per second, and when it entered the atmosphere, it began to disintegrate, clearly causing a violent explosion. At the same time, the fragments scattered together.

The very fresh ones are blue, and many of the ones that have been rust removed are black, compact and massive. Iron meteorite, also known as meteorite, is a major type of meteorite, which is mainly composed of nickel, iron alloys (including Taenite and ankelite) and a small amount of sulfide, graphite and other minerals. On February 12, 1947, residents of Siberia, Russia witnessed a historic meteorite fall. A meteor broke into the atmosphere at a speed of 14 kilometers per second and exploded at an altitude of 6 kilometers. Residents within a radius of 300 kilometers witnessed dazzling fireballs and deafening thunder, and the smoke stayed in the air for several hours, which was very spectacular. Several craters were left in the impact zone, one with a diameter of 26 meters and a depth of 6 meters. On November 20, 1957, the former Soviet Union issued a stamp commemorating the tenth anniversary of the fall of the Alin meteorite, using an artist's depiction of the scene when the meteorite landed. A large number of meteorite fragments with a total weight of over 70 tons were collected after this meteoric event. The Sikhote Alin Iron meteorite is a very coarse Octahedron structure, and its chemical type is IIAB (Ni6%).

International name: Sikhote Alin

Status in the collection field: Alin Iron meteorite is the freshest Iron meteorite that can be collected at present. Due to its large amount, the overall price is low. But more than 90% of the meteorite is fragmented, and less than 10% has a good shape, making it a star in the current meteorite collection industry. Undoubtedly, it is currently one of the most cost-effective and collectible meteorites.