San Francisco del Mezquital meteorite, Mezquital Municipality, Durango, Mexicoi
| Regional Level Types | |
|---|---|
| San Francisco del Mezquital meteorite | Meteorite Fall Location |
| Mezquital Municipality | Municipality |
| Durango | State |
| Mexico | Country |
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Key
Latitude & Longitude (WGS84):
23° 29' North , 104° 22' West
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| El Troncón | 836 (2018) | 2.3km |
| San Francisco del Mezquital | 1,742 (2018) | 3.0km |
| Santa Gertrudis | 223 (2014) | 7.4km |
| Paura | 212 (2014) | 14.1km |
| La Joya de Atotonilco | 107 (2018) | 14.8km |
Iron meteorite, hexahedrite (IIAB, hex)
Find 1868; 7.5 kg
An iron-rich (~5.5 wt% Ni) and flattened mass (28 x 13 x 7 cm) was apparently brought to France in 1867, but the main portion was not obtained by the London Museum of Natural History until the following year. As a more or less normal IIAB meteorite the meteorite is composed almost entirely of kamacite. Accompanying the kamacite are minor amounts of schreibersite, troilite, and accessory chromite. However, as all or almost all of the mass had been artificially heated before its arrival the textures of these normal constituents are somewhat unusual. While Neumann bands are still present, the meteorite appears ataxic as the metal has largely reaggregated into very small grains. Troilite has also recrystallized into small aggregates while schreibersite has been partially absorbed into the metal. Only the chromite appears to have been relatively unaffected by heating and hammering.
San Francisco del Mezquital is one of 124 IIAB iron meteorites listed at the Meteoritical Bulletin Database (as of September 2015) and one of four IIAB irons which have been recovered in Mexico. By 2000 the main mass had been held at the Natural History Museum in London for over a century.
Select Mineral List Type
Standard Detailed Strunz Dana Chemical ElementsMineral List
4 valid minerals.
Meteorite/Rock Types Recorded
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Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
| ⓘ Iron Formula: Fe Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
| ⓘ Iron var: Kamacite Formula: (Fe,Ni) Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
| ⓘ Schreibersite Formula: (Fe,Ni)3P Description: Crystals and rhabdites have been partially reabsorbed after artificial heating. Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
| ⓘ Troilite Formula: FeS Description: Mostly recrystallized into aggregates with 15-50 µm size grains. Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Iron | 1.AE.05 | Fe |
| ⓘ | var: Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Troilite | 2.CC.10 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
List of minerals arranged by Dana 8th Edition classification
| Group 1 - NATIVE ELEMENTS AND ALLOYS | |||
|---|---|---|---|
| Metals, other than the Platinum Group | |||
| ⓘ | Iron var: Kamacite | 1.1.11.1 | (Fe,Ni) |
| ⓘ | Schreibersite | 1.1.21.2 | (Fe,Ni)3P |
| Group 2 - SULFIDES | |||
| AmXp, with m:p = 1:1 | |||
| ⓘ | Troilite | 2.8.9.1 | FeS |
| Group 7 - MULTIPLE OXIDES | |||
| AB2X4 | |||
| ⓘ | Chromite | 7.2.3.3 | Fe2+Cr3+2O4 |
| Unclassified Minerals, Mixtures, etc. | |||
| ⓘ | Iron | - | Fe |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| P | Phosphorus | |
| P | ⓘ Schreibersite | (Fe,Ni)3P |
| S | Sulfur | |
| S | ⓘ Troilite | FeS |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Iron (var: Kamacite) | (Fe,Ni) |
| Fe | ⓘ Schreibersite | (Fe,Ni)3P |
| Fe | ⓘ Troilite | FeS |
| Fe | ⓘ Iron | Fe |
| Ni | Nickel | |
| Ni | ⓘ Iron (var: Kamacite) | (Fe,Ni) |
| Ni | ⓘ Schreibersite | (Fe,Ni)3P |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Cohen, E. (1905) Meteoritenkunde. Classification und Nomenclatur; Körnige bis dichte Eisen; Hexaedrite; Oktaedrite mit feinsten und feinen Lamellen, Heft III: Stuttgart: E. Schweitzerbarth. 419 pages.
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.
External Links
http://www.lpi.usra.edu/meteor/metbull.php = Meteoritical Bulletin Database
http://www.lpi.usra.edu/meteor/metbull.php?code=23123 -San Francisco del Mezquital@MetBullDatabase
http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35877/vol3-San-SantaL(LO).pdf#page=3 -Buchwald(1975)
http://www.lpi.usra.edu/meteor/metbull.php?code=23123 -San Francisco del Mezquital@MetBullDatabase
http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35877/vol3-San-SantaL(LO).pdf#page=3 -Buchwald(1975)
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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