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CI chondrites typically contain a high proportion of water (up to 22%), [8] and organic matter in the form of amino acids [9] and PAHs. [10] Aqueous alteration promotes a composition of hydrous phyllosilicates , magnetite , and olivine crystals occurring in a black matrix, and a possible lack of chondrules .
Reports vary; some meteorites are reported to be "burning hot to the touch" upon landing, while others are alleged to have been cold enough to condense water and form a frost. [ 13 ] [ 14 ] [ 15 ] Meteoroids that disintegrate in the atmosphere may fall as meteorite showers, which can range from only a few up to thousands of separate individuals.
A chondrite / ˈ k ɒ n d r aɪ t / is a stony (non-metallic) meteorite that has not been modified, by either melting or differentiation of the parent body. [a] [1] They are formed when various types of dust and small grains in the early Solar System accreted to form primitive asteroids.
The Winchcombe meteorite is a rare find, with a similar hydrogen isotope ratio to the water on Earth.. Recovering a meteorite within 12 hours of arrival means it is as pristine a specimen as we ...
CM chondrites are a group of chondritic meteorites which resemble their type specimen, the Mighei meteorite. The CM is the most commonly recovered group of the 'carbonaceous chondrite' class of meteorites, though all are rarer in collections than ordinary chondrites.
The meteorite was acquired by the Geological Survey of Canada, [8] and a large sample of it is on display at the Royal Ontario Museum. The largest known E-type chondrite in the asteroid belt may be 21 Lutetia , with a diameter of approximately 100 kilometres (62 mi), [ 9 ] based on observations from the Rosetta spacecraft, ESO's New Technology ...
Researchers analysed melted meteorites that had been floating around in space since the solar system around 4.5 billion years ago Earth’s water did not come from melted meteorites – study Skip ...
Meteorite classification may indicate that a "genetic" relationship exists between similar meteorite specimens. Similarly classified meteorites may share a common origin, and therefore may come from the same astronomical object (such as a planet, asteroid, or moon) known as a parent body. However, with current scientific knowledge, these types ...