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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 . [ 1 ] After it broke up in the atmosphere , an extensive search for pieces was conducted and over 2 tonnes (2.2 tons) were recovered.
[2] [4] It is named after the Allan Hills, a mountain chain in Antarctica where many meteorites are gathered by expeditions. [1] The large number of meteorites collected in Antarctica and the lack of geographic terms that could be used for names have led to the adaption of the "Antarctic rules" for meteorite naming.
The Allende meteorite has shown to be full of new minerals, after nearly forty years it has produced one in ten of the now known minerals in meteorites. [2] This CV3 carbonaceous chondrite was the largest ever recovered on earth and is referred to as the best-studied meteorite in history. [2] The inclusion has only been viewed via electron ...
Some carbonaceous chondrites, such as the Allende meteorite, contain calcium-aluminum-rich inclusions (CAIs). These are compounds that emerged early from the primeval solar nebula , condensed out and represent the oldest minerals formed in the Solar System .
In meteoritics, a meteorite classification system attempts to group similar meteorites and allows scientists to communicate with a standardized terminology when discussing them. Meteorites are classified according to a variety of characteristics, especially mineralogical , petrological , chemical , and isotopic properties.
A.S. Kornacki, J.A. Wood (1984) The mineral chemistry and origin of inclusion matrix and meteorite matrix in the Allende CV3 chondrite. GeCoA, Vol. 48, 1663–1676; A.S. Kornacki, J.A. Wood (1985) The identification of group II inclusions in carbonaceous chondrites by electron probe microanalysis of perovskite. Earth and Planetary Science ...
Allende meteorite – is the largest carbonaceous chondrite ever found on Earth. Amphoterite – an obsolete classification of chondritic meteorites that are now classified as LL. Angrite – a basaltic meteorite. ANSMET – the Antarctic Search for Meteorites is a scientific program that looks for meteorites in the Transantarctic Mountains.
Elephant Moraine 79001, also known as EETA 79001, is a Martian meteorite. It was found in Elephant Moraine , in the Antarctic during the 1979–1980 collecting season. EETA79001 NASA photo # S80-37633 An image showing EETA79001 as found in Antarctica, NASA photo # S80-28838 Impact and ejection sequence of a Martian meteorite.