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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.
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 .
Allendeite was discovered in a small ultrarefractory inclusion within the Allende meteorite. [2] This inclusion has been named ACM-1. [2] It is one of several scandium rich minerals that have been found in meteorites. [2] Allendeite is trigonal, with a calculated density of 4.84 g/cm 3. [2] The new mineral was found along with hexamolybdenum. [2]
Hexamolybdenum was discovered in a small ultrarefractory inclusion within the Allende meteorite. [4] This inclusion has been named ACM-1. [4] Hexamolybdenum is hexagonal, with a calculated density of 11.90 g/cm 3. [4] The new mineral was found along with allendeite. [4] These minerals, are believed to demonstrate conditions during the early ...
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.
There, geological evidence of eight impact events, which occurred between 3.6 billion and 3.2 billion years ago, can be found in the rocks and traced through tiny meteorite impact particles called ...
A Bronze Age arrowhead unearthed in Switzerland was made from a meteorite, a new study has found. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
Extra-terrestrial water found for first time in meteorite that fell in UK. Nina Massey. Updated September 17, 2022 at 1:37 AM. 1 / 3. Extra-terrestrial water found for first time in meteorite that ...