Brient meteorite, Chakalov, Orenburgskaya Oblast, Southern Urals, Urals Region, Russia
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| Latitude & Longitude (WGS84): | 52° 8' North , 59° 19' East |
|---|---|
| Latitude & Longitude (decimal): | 52.13333,59.31667 |
| GeoHash: | G#: v360tf94d |
| Locality type: | Meteorite Fall Location |
| Meteorite Class: | Eucrite polymict breccia meteorite |
| Meteoritical Society Class: | Eucrite-pmict |
| Metbull: | View entry in Meteoritical Bulletin Database |
| KΓΆppen climate type: | Dfb : Warm-summer humid continental climate |
Eucrite, polymict
Fell 9 Apr 1933, 219 g
A brecciated mass of ~5 kg fell in the valley of the Suvunduk River, but only 219 g were preserved. Variable composition in both pyroxenes and plagioclase are reported. While Brient is somewhat more massive than 7 of the 35 witnessed Eucrite falls (as of August 2014), reported studies of Brient are quite sparse.
Regions containing this locality
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Standard Detailed Strunz Dana Chemical ElementsMineral List
1 valid mineral.
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!
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Alphabetical List Tree DiagramDetailed Mineral List:
| β 'Albite-Anorthite Series' Description: Variable Plagioclase {Ab79-95) overlaps the Anorthite and Bytownite fields.
Reference: Steele, I. M. & Smith, J. V. (1982) Ion probe analysis of plagioclase in three howardites and three eucrites: Lunar and Planetary Science Conference 12B: 1281-1296. |
| β Anorthite Formula: Ca(Al2Si2O8) Reference: Steele, I. M. & Smith, J. V. (1982) Ion probe analysis of plagioclase in three howardites and three eucrites: Lunar and Planetary Science Conference 12B: 1281-1296. |
| β Anorthite var: Bytownite Formula: (Ca,Na)[Al(Al,Si)Si2O8] Reference: Steele, I. M. & Smith, J. V. (1982) Ion probe analysis of plagioclase in three howardites and three eucrites: Lunar and Planetary Science Conference 12B: 1281-1296. |
| β 'Eucrite polymict breccia meteorite' Reference: Meteoritical Society Database |
| β 'Hypersthene' Formula: (Mg,Fe)SiO3 Reference: Mason, B. (1967) The Bununu meteorite, and a discussion of the pyroxene-plagioclase achondrites: Geochimica et Cosmochimica Acta 31 (2): 107-115. |
| β 'Pyroxene Group' Description: Ca-poor Hypersthene and Ca-rich Diopside are listed in table 2 of Mason (1967), but from the very brief discussion it is unclear whether the Ca-rich phase is diopside or augite. Exsolution lamellae in pyroxene noted by Steele & Smith (1982) presumably pertains to the same or similar features. Reference: Mason, B. (1967) The Bununu meteorite, and a discussion of the pyroxene-plagioclase achondrites: Geochimica et Cosmochimica Acta 31 (2): 107-115. ; Steele, I. M. & Smith, J. V. (1982) Ion probe analysis of plagioclase in three howardites and three eucrites: Lunar and Planetary Science Conference 12B: 1281-1296. |
| β 'Silica' Reference: Mason, B. (1967) The Bununu meteorite, and a discussion of the pyroxene-plagioclase achondrites: Geochimica et Cosmochimica Acta 31 (2): 107-115. |
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| β | 'Anorthite' | 9.FA.35 | Ca(Al2Si2O8) |
| β | var: Bytownite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
| Unclassified Minerals, Rocks, etc. | |||
| β | 'Albite-Anorthite Series' | - | |
| β | Eucrite polymict breccia meteorite | - | |
| β | Hypersthene | - | (Mg,Fe)SiO3 |
| β | Pyroxene Group | - | |
| β | Silica | - | |
List of minerals arranged by Dana 8th Edition classification
| Unclassified Minerals, Rocks, etc. | |||
|---|---|---|---|
| β | 'Albite-Anorthite Series' | - | |
| β | Anorthite | - | Ca(Al2Si2O8) |
| β | var: Bytownite | - | (Ca,Na)[Al(Al,Si)Si2O8] |
| β | 'Eucrite polymict breccia meteorite' | - | |
| β | 'Hypersthene' | - | (Mg,Fe)SiO3 |
| β | 'Pyroxene Group' | - | |
| β | 'Silica' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | β Anorthite | Ca(Al2Si2O8) |
| O | β Anorthite (var: Bytownite) | (Ca,Na)[Al(Al,Si)Si2O8] |
| O | β Hypersthene | (Mg,Fe)SiO3 |
| Na | Sodium | |
| Na | β Anorthite (var: Bytownite) | (Ca,Na)[Al(Al,Si)Si2O8] |
| Mg | Magnesium | |
| Mg | β Hypersthene | (Mg,Fe)SiO3 |
| Al | Aluminium | |
| Al | β Anorthite | Ca(Al2Si2O8) |
| Al | β Anorthite (var: Bytownite) | (Ca,Na)[Al(Al,Si)Si2O8] |
| Si | Silicon | |
| Si | β Anorthite | Ca(Al2Si2O8) |
| Si | β Anorthite (var: Bytownite) | (Ca,Na)[Al(Al,Si)Si2O8] |
| Si | β Hypersthene | (Mg,Fe)SiO3 |
| Ca | Calcium | |
| Ca | β Anorthite | Ca(Al2Si2O8) |
| Ca | β Anorthite (var: Bytownite) | (Ca,Na)[Al(Al,Si)Si2O8] |
| Fe | Iron | |
| Fe | β Hypersthene | (Mg,Fe)SiO3 |
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
| Paleozoic 251.902 - 541 Ma ID: 3193239 | Paleozoic volcanic and intrusive rocks Age: Phanerozoic (251.902 - 541 Ma) Lithology: Mafic volcanic 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] |
| Early Carboniferous 323.2 - 358.9 Ma ID: 3153228 | Urals |
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)Mason, B. (1967) The Bununu meteorite, and a discussion of the pyroxene-plagioclase achondrites: Geochimica et Cosmochimica Acta 31 (2): 107-115.
Mason B., Jarosewich E. & Nelen J. A. (1979) The pyroxene-plagioclase achondrites. Smithson. Contrib. Earth Sci. 22: 27-45.
Steele, I. M. & Smith, J. V. (1982) Ion probe analysis of plagioclase in three howardites and three eucrites: Lunar and Planetary Science Conference 12B: 1281-1296.
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/get_original_photo.php?recno=5642245
http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5642245
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