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This pallasite is severely weathered: almost all of the metal is highly oxidized and transformed mainly into maghemite and goethite, and the olivine crystals are often altered. Sometimes it is called an anomalous Main Group pallasite because, compared to other Main Group pallasites, it has rather high Ge and Ga contents, higher Pt, W, Ir, and ...
Pallasites are named after Peter Pallas for his study of this meteorite. Seymchan, discovered near the town by the same name, in far eastern Russia in 1967. This main group Pallasite has some areas free of olivine crystals, and may have formed near the junction of the core and the mantle of an asteroid.
N° Meteorite name Found year Region/Country Coordinates Group Classification TKW Fall observed Image 1: Seymchan: 1967: Magadan Oblast, Russia: Pallasite: PMG: 20,000 kg (44,000 lb) [15] [b]
It is a pallasite, a type of stony–iron meteorite that when cut and polished shows yellowish olivine (peridot) crystals. In 1951 a farmer uncovered a meteorite in an unknown location near Esquel while digging a hole for a water tank. The meteorite was purchased from the finders and taken to the United States in 1992 by meteorite expert Robert ...
The stony-irons are divided into mesosiderites and pallasites. Pallasites have a matrix of meteoric iron with embedded silicates (most of it olivine). [2] Mesosiderites are breccias which show signs of metamorphism. The meteoric iron occurs in clasts instead of a matrix. [3] [4]
Almost all pallasite meteorites are part of the pallasite main group. [1] References This page was last edited on 27 July 2023, at 14:47 (UTC). Text is ...
At least 26 craters make up the Campo del Cielo crater field, the largest being 115 by 91 metres (377 by 299 ft). The field covered an area of 3 by 18.5 kilometres (1.9 by 11.5 mi) with an associated strewn area of smaller meteorites including an additional 60 kilometres (37 mi).
Individual. Due to weathering, intact olivine grains are present only on large specimens (over 1 kilogram (2.2 lb)). Smaller samples contain darker altered olivine crystals. . On the market there are also a lot of very small (few grams) Imilac individuals called metal skeletons: they are severely weathered and lack olivine grai