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ALH – an abbreviation used for meteorites from Allan Hills. Allan Hills 84001 – is an exotic meteorite from Mars that does not fit into any of the SNC groups and was thought to contain evidence for life on Mars. Allende meteorite – is the largest carbonaceous chondrite ever found on Earth.
The 60-tonne, 2.7 m-long (8.9 ft) Hoba meteorite in Namibia is the largest known intact meteorite.[1]A meteorite is a rock that originated in outer space and has fallen to the surface of a planet or moon.
Names Composition Occurrence Akimotoite (Mg,Fe)SiO 3: Alabandite: MnS Allabogdanite (Fe,Ni) 2 P Antitaenite: Brezinaite: Cr 3 S 4: Brianite: Na 2 CaMg(PO 4) 2: Calcium–aluminium-rich inclusion: Carlsbergite: CrN the North Chile meteorite in the Antofagasta Province, Chile; the Nentmannsdorf meteorite of Bahretal, Saxony, Germany
Less than ten thousand years old, and with a diameter of 100 m (330 ft) or more. The EID lists fewer than ten such craters, and the largest in the last 100,000 years (100 ka) is the 4.5 km (2.8 mi) Rio Cuarto crater in Argentina. [2]
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]
Radiometric methods can be used to date different stages of the history of a meteorite. Condensation from the solar nebula is recorded by calcium–aluminium-rich inclusions and chondrules . These can be dated by using radionuclides that were present in the solar nebula (e.g. 26 Al/ 26 Mg , 53 Mn/ 53 Cr, U/Pb , 129 I/ 129 Xe ).
The Inuit used the Cape York meteorite for a much longer time. Iron meteorites themselves were sometimes used unaltered as collectibles or even religious symbols (e.g. Clackamas worshiping the Willamette meteorite). [15] Today iron meteorites are prized collectibles for academic institutions and individuals.
There are several lists of meteorite impacts of various types available: . Category:Lists of impact craters contains lists on various planets, including Earth by continent ...