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Morito meteorite, Mun. de Hidalgo del Parral, Chihuahua, Mexico

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Latitude & Longitude (WGS84): 27° 3' North , 105° 26' West
Latitude & Longitude (decimal): 27.05000,-105.43333
GeoHash:G#: 9sv1bu3c9
Locality type:Meteorite Fall Location
Meteorite Class:IIIAB iron meteorite
Meteoritical Society Class:Iron, IIIAB
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:BSh : Hot semi-arid (steppe) climate


Iron meteorite, Octahedrite (IIIAB, Om)
Find, 1600; 10.1 tons

After the arrival of the Spaniards in the New World persistent reports of various large meteoritic iron masses eventually led to the recovery of several unusually large iron meteorites— including the Morito Iron, a ancient landmark in the vicinity of Hildalgo del Parral. The largely intact main mass — described by Buchwald (1975) as a 'beautiful conical monster' — is now on display in Mexico City, but a few pieces and fragments have been analyzed. The exterior displays fusion crust, troilite pits, and oxidized areas, but the interior is predominantly kamacite and taenite accompanied by plessite plus a few very minor accessories minerals. Various features indicate of preterrestrial shocks and deformation. Schreibersite is common as boundary precipitates and tiny rhabdites. Troilite is present as scattered nodules with twinned portions indicating plastic deformation. Exsolved Daubréelite accounts for ~10 vol% of the sulfide. Weatherates are common in some regions, particularly in surface pits and near surface veins.

As of late 2014, the IIIAB iron meteorites represent nearly 30% of all classified iron meteorites. Of these meteorites Morito is both the first recorded in (Western) scientific circles and the fourth most massive. The main mass is preserved at the School of Mines, Mexico City. However, a few specimens have been cut from it and listed under such names as Durango, Chihuahua, and Parral.


Mineral List


7 valid minerals.

Meteorite/Rock Types Recorded

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Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Neogene
2.588 - 23.03 Ma



ID: 2433837

Age: Neogene (2.588 - 23.03 Ma)

Lithology: Conglomerate

Reference: Instituto Nacional de Estadística, Geografía e Informática. Conjunto de Datos Vectoriales Geológicos. Continuo Nacional. Escala 1:1’000,000. [63]

Early Cretaceous
100.5 - 145 Ma



ID: 3186170
Mesozoic sedimentary rocks

Age: Early Cretaceous (100.5 - 145 Ma)

Lithology: Carbonate,shale

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Fletcher, L. (1890) On the Mexican Meteorites, with especial regard to the occurrence of wide-spread meteoritic showers. Mineralogical Magazine 9 (42):91-180. (Aug 1890)
Prior, G. T. (1923) Catalogue of Meteorites: with special reference to those represented in the collection of the British Museum of Natural History. Richard Clay & Sons, Limited: Bungay, Suffolk.
Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Grady, M. M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.

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