SIKHOTE-ALIN METEORITE

 The Sikhote-Alin meteorite fall was a massive impact event that occurred on February 12, 1947, approximately 440 km northeast of Vladivostok, Russia.

The Sikhote-Alin meteorite fell in the Sikhote-Alin Mountains, Primorye, Russia, near the village of Paseka (approximately 440 km northeast of Vladivostok) on the morning of February 12, 1947. At around 10:30 am that morning, witnesses reported a fireball brighter than the sun that came out of the north, descending at an angle of about 41 degrees. The bright flash and the deafening sound of the fall were observed for three hundred kilometres around the point of impact. The smoke train, which remained in the sky for several hours, was 32 km long.

The specimens from this fall are basically of two types. There are pieces showing ablation and fusion crust, which probably broke off of the main object early in the descent. These pieces are characterized by regmaglypts (cavities resembling thumb prints) in the surface of each specimen.

The second type are fragments which show evidence of having been either violently torn apart in the atmosphere during the descent or blasted apart upon impact. These pieces are most likely the result of the explosion at 5.6 km altitude.

Sikhote-Alin is a coarse iron octahedrite. Its composition is as follows: 5.9% nickel, 0.42% cobalt, 0.46% phosphorus, 0.28% sulfur, smaller amounts of germanium and iridium, and the remainder (approximately 93%) is iron.

The describtion of a this meteorite.

- gross weight: 134,3 g.

- coins size: 23 x 23 x 3 mm

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