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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.
Esquel is a meteorite found near Esquel, a Patagonian town in the northwest part of the province of Chubut in Argentina. 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 ...
Stony-iron meteorites are all differentiated, meaning that they show signs of alteration. They are therefore achondrites. 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 ...
Widmanstätten patterns, also known as Thomson structures, are figures of long phases of nickel–iron, found in the octahedrite shapes of iron meteorite crystals and some pallasites. Iron meteorites are very often formed from a single crystal of iron-nickel alloy, or sometimes a number of large crystals that may be many meters in size, and ...
Other meteorites fetch much more. A unique 4-pound pallasite meteorite featuring crystals of olivine and peridot recently sold for $60,480. That’s over $15,000 per pound!
Stony–iron meteorites have always been divided into pallasites (which are now known to comprise several distinct groups) and mesosiderites (a textural term that is also synonymous with the name of a modern group). Below is a representation of how the meteorite groups fit into the more traditional classification hierarchy: [1]
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 ...
The Eagle Station group (abbreviated PES - Pallasite Eagle Station) is a set of pallasite meteorite specimen that do not fit into any of the other defined pallasite groups. In meteorite classification five meteorites have to be found, so they can be defined as their own group. [1] Currently only five Eagle Station type meteorites have been ...
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