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Mineralati

Meteorites

1147 results

Meteorite

Aleppo
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Alessandria
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Aletai meteorite
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Alexandrovsky
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Alfianello
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Algarrobo
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Aliskerovo
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Alkali
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Allan Hills 77307
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Allan Hills 82102
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Allan Hills 84049
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Allan Hills 85135
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Allan Hills A76001
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Allan Hills A76005
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Allan Hills A77081
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Allan Hills A77255
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Allan Hills A77283
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Allan Hills A77306
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Allan Hills A78084
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Allan Hills A81002
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Allan Hills A81189
Meteorite

Allegan
Carbonaceous chondrite - slice of the Allende Meteorite from Mexico. Carbonaceous chondrites are dark gray to blackish-colored chondrite meteorites with a relatively carbon-rich matrix. The first large sampling of carbonaceous chondrites available to meteoriticists came with the 1969 fall of the Allende Meteorite. Before Allende, carbonaceous chondrite material was exceedingly rare. Allende has become the most heavily studied and the most famous carbonaceous chondrite. Allende impacted on Earth at 1:05 AM on 8 February 1969. Its known strewn field trends southwest-to-northeast in the vicinity of the town of Allende in southeastern Chihuahua State, northern Mexico. The cut slice seen here displays the internal structure & composition of the Allende carbonaceous chondrite. Allende has small, spherical to subspherical structures called chondrules (all chondrites have these). Allende also contains whitish, irregularly-shaped patches called CAIs (“calcium-aluminum inclusions”), composed of high-temperature Ca-Al-Ti silicate and oxide minerals. The blackish, fine-grained, carbon-rich matrix consists of Fe-olivine and poorly graphitized carbon. A few tiny specks of metallic iron-nickel alloy also occur. Allende rocks represent the near-oldest meteoritic material known. The olivine chondrules in Allende rocks date to 4.560 billion years. The CAIs in Allende rocks date to 4.568 billion years. Meteorite

Allende

Colour
Dark grey
Meteorite

Allende meteorite