Toluca (meteorite)

Group of meteorites found in Mexico

Toluca

500g Toluca slice

Type| Iron
Structural classification| Coarse Octahedrite
Group| IAB-sLL
Composition| 90.5% Fe; 8.1% Ni
Country| Mexico
Region| Toluca Valley, Jiquipilco, Mexico State
Coordinates| 19°27′N 99°35′W﻿ / ﻿19.450°N 99.583°W﻿ / 19.450; -99.583[1]
Observed fall| No
Fall date| >10,000 years ago
Found date| about 1776
TKW| 3 tonnes
Related media on Wikimedia Commons

Toluca is a group of iron meteorites found in Jiquipilco, Mexico near Toluca.[1]

## History

[edit]

The meteorites probably crashed into Earth more than 10,000 years ago.[2] For centuries, Mexican people living near the meteorites used them as a source of metal for various tools. They were first described by conquistadores in about 1776.[1]

The total known mass is about 3 tonnes.[3]

## Composition and classification

[edit]

These iron meteorites are a coarse octahedrite, chemical type IAB-sLL.[3] The mean composition is 90.5% Fe and 8.1% Ni.[1] They often contain large troilite inclusions.

## See also

[edit]

* Glossary of meteoritics

## References

[edit]

1. ^ a b c d Vagn Fabritius Buchwald (1975). "Handbook of Iron Meteorites".
2. ^ Vagn Fabritius Buchwald (2005). Iron and Steel in Ancient Times. ISBN 978-87-7304-308-0.
3. ^ a b Meteoritical Bulletin Database: Toluca

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* List: Meteorite fall

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| Chondrite|

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Achondrite|

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|

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Stony-iron|

* Mesosiderite
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Structural|

* Ataxite
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Obsolete terms|

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