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Bencubbinite
Carbonaceous chondrites or C chondrites are a class of chondrite, chondritic meteorites comprising at least 8 known groups and many ungrouped meteorites. They include some of the most primitive known meteorites. The C chondrites represent only a small proportion (4.6%) of meteorite falls. Some famous carbonaceous chondrites are: Allende meteorite, Allende, Murchison meteorite, Murchison, Orgueil (meteorite), Orgueil, Ivuna meteorite, Ivuna, Murray meteorite, Murray, Tagish Lake (meteorite), Tagish Lake, Sutter's Mill meteorite, Sutter's Mill and Winchcombe meteorite, Winchcombe. General description C chondrites contain a high proportion of carbon (up to 3%), which is in the form of graphite, carbonates and organic compounds, including amino acids. In addition, they contain water and minerals that have been modified by the influence of water. The carbonaceous chondrites were not exposed to higher temperatures, so that they are hardly changed by thermal processes. Some carbonac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allende Meteorite
The Allende meteorite is the largest carbonaceous chondrite ever found on Earth. The fireball was witnessed at 01:05 on February 8, 1969, falling over the Mexican state of Chihuahua. After it broke up in the atmosphere, an extensive search for pieces was conducted and over 2 tonnes (2.2 tons) were recovered. The availability of large quantities of samples of the scientifically-important chondrite class has enabled numerous investigations by many scientists; it is often described as "the best-studied meteorite in history." The Allende meteorite has abundant, large calcium–aluminium-rich inclusions (CAI), which are among the oldest objects formed in the Solar System. Carbonaceous chondrites compose about 4 percent of all meteorites observed to fall from space. Prior to 1969, the carbonaceous chondrite class was known from a small number of uncommon meteorites such as Orgueil, which fell in France in 1864. Meteorites similar to Allende were known, but many were small and poorl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
