SEYMCHAN METEORITE PALLASITE POLISHED SLICE 34.8g

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Meteorite Name: Seymchan Country: Russia, Magadan district Coordinates: 62° 54' N / 152° 26' E Date of find: 1967 Type: IIE or Pallasite TKW: 312.3 kg in 1967 and more than 100 kg in 2004. Pallasite which long time was considered as coarse octahedrite. A mass too large to move was discovered by the geologist F. A. Mednikov during field work in June 1967. It was situated in the stream bed of a small unnamed tributary of the Yasachnaya River which itself is a left tributary of the Kolyma River. While the locality has the approximate coordinates given above, the mass was named after the town of Seymchan, situated about 150 km southeast of the locality of discovery.An expedition was sent to examine the locality and recover the meteorite. This turned out to be a roughly triangular prism, measuring 60 x 45 x 40 cm with pronounced regmaglypts and an estimated weight of 300 kg. (According to a note in Meteoritical Bulletin, No. 43, 1968: 272.3 kg). The river bed and the adjacent slopes were searched with a mine detector with the result that another fragment, of 51 kg, was discovered about 20 m downstream from the first find. No analytical or structural work has yet been reported. The large mass is in the Academy of Sciences, Moscow, the small one, in the Museum of the Northeastern Geological Survey (in Magadan). The information above read more