Agen meteorite, Agen, Lot-et-Garonne, Nouvelle-Aquitaine, Francei
| Regional Level Types | |
|---|---|
| Agen meteorite | Meteorite Fall Location |
| Agen | - not defined - |
| Lot-et-Garonne | Department |
| Nouvelle-Aquitaine | Region |
| France | Country |
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| Latitude & Longitude (WGS84): | 44° 13' North , 0° 37' East | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Latitude & Longitude (decimal): | 44.21667,0.61667 | ||||||||||||||||||
| GeoHash: | G#: spb7w13hc | ||||||||||||||||||
| Locality type: | Meteorite Fall Location | ||||||||||||||||||
| Meteorite Class: | H5 chondrite meteorite | ||||||||||||||||||
| Meteoritical Society Class: | H5 | ||||||||||||||||||
| Metbull: | View entry in Meteoritical Bulletin Database | ||||||||||||||||||
| Köppen climate type: | Cfb : Temperate oceanic climate | ||||||||||||||||||
| Nearest Settlements: |
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| Other/historical names associated with this locality: | , Aquitaine; Limousin; Poitou-Charentes |
Ordinary Chondrite, veined & xenolithic (H5)
Fall: 5 Sept 1814 at 12 hrs; 30 kg
At noon a shower of stones, the largest ~9 kg, fell after the appearance of a cloud and detonations. The interior of the stone is mostly characterized by moderately distinct chondrules and angular fragments within a largely light grey chondritic matrix transected by occasional veins. Some slightly darker xenolithic regions are also present. Olivine (Fa 20) and orthopyroxene ('bronzite') are characteristic of the H-group chondrites. Both Kamacite and troilite (as expected) as well as accessory chromite have also been reported.
A U,Th:He age of 3.16 Ga appears to reflect a major collision involving an important intermediate parent body (IPA) of the meteorite. A much shorter cosmic ray exposure (CRE) age of 5.6 Ma may indicate a shared history with several other H5 meteorite apparently involved in a major collision during the past 10 Ma. Agen material has also been utilized in several minor studies of ordinary chondrite radioactivities. The H5 petrologic type is the most common H-group subtype.
Approximately 9 kg has been preserved at the Museum d'Histoire Naturelle (Paris).
Regions containing this locality
| Eurasian Plate | Tectonic Plate |
| Europe | Continent |
Select Mineral List Type
Standard Detailed Strunz Dana Chemical ElementsMineral List
3 valid minerals.
Meteorite/Rock Types Recorded
Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. |
| ⓘ 'Fayalite-Forsterite Series' Description: Mildly Forsteritic olivine [Fa20] observed by Mason (1963) characteristic of H-group chondrites Reference: Mason, B. (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept 2013).; Graham, A.L., Bevan, A.W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson. |
| ⓘ Iron Formula: Fe Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. |
| ⓘ Iron var: Kamacite Formula: (Fe,Ni) Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. |
| ⓘ 'Orthopyroxene Subgroup' Reference: Graham, A.L., Bevan, A.W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson. |
| ⓘ Troilite Formula: FeS Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 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) |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Troilite | 2.CC.10 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
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) |
| 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. | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | Iron | - | Fe |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| 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 | ⓘ Troilite | FeS |
| Fe | ⓘ Iron | Fe |
| Ni | Nickel | |
| Ni | ⓘ Iron (var: Kamacite) | (Fe,Ni) |
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
| Paleogene 23.03 - 66 Ma ID: 3186272 | Cenozoic sedimentary rocks Age: Paleogene (23.03 - 66 Ma) Lithology: Sedimentary rocks 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] |
| Eocene 33.9 - 56 Ma ID: 3141759 | transgressive deposit |
Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)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.
Mason, B. (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept 2013).
Binns, R.A. (1968) Cognate xenoliths in chondritic meteorites: Examples in Mezö-Madaras and Ghubara: Geochimica et Cosmochimica Acta 32 (3): 299-306. (March 1968).
Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Graham, A.L., Bevan, A.W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
Wasson, J. & Wang, S. (1991) The histories of ordinary chondrite parent bodies: U,Th-He age distributions. Meteoritics 26(2): 161-167. (June 1991).
Graf, Th. & Marti, K. (1995) Collisional history of H chondrites. J. Geophys. Res. (Planets) 100, 21247–21263. (Oct 1995).
Grady, M.M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
External Links
http://www.lpi.usra.edu/meteor/metbull.php?code=392 - Agen@MetBullDatabase
http://www.encyclopedia-of-meteorites.com/test/Agen_vatican.jpg — Agen Speciman
http://www.encyclopedia-of-meteorites.com/test/agen_sv_meteorites_21_4g.jpg — Agen, adjoining lithologies
http://www.encyclopedia-of-meteorites.com/test/392_3460_126.jpg — chondrules, clasts, veins, and matrix
http://www.encyclopedia-of-meteorites.com/test/Agen_vatican.jpg — Agen Speciman
http://www.encyclopedia-of-meteorites.com/test/agen_sv_meteorites_21_4g.jpg — Agen, adjoining lithologies
http://www.encyclopedia-of-meteorites.com/test/392_3460_126.jpg — chondrules, clasts, veins, and matrix
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