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Plagioclase from
Ausson meteorite, Ausson, Saint-Gaudens, Haute-Garonne, Occitanie, France


Locality type:Meteorite Fall Location
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Comments:Plagioclase (An21,Ab74) is usually mildly anorthitic for an ordinary chondrite [Kessel,2002], but compositional excursions are present with plagioclase (An 18-25) in selected regions studied by Bischoff & Keil(1984).
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Ausson meteorite, Ausson, Saint-Gaudens, Haute-Garonne, Occitanie, France
Data Identifiers
Mindat Occurrence Record ID:1080503
Long-form Identifier:1:3:1080503:3
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
23.1km (14.4 miles) ⓘEspéchère, Avezac-Prat-Lahitte, Bagnères-de-Bigorre, Hautes-Pyrénées, Occitanie, France
61.7km (38.3 miles) ⓘLa Fourque granodiorite outcrop, Salau, Seix, Saint-Girons, Ariège, Occitanie, France
83.0km (51.5 miles) ⓘEureka mine, Castell-estaó, La Torre de Cabdella, La Vall Fosca, Pallars Jussà, Lleida, Catalonia, Spain
96.4km (59.9 miles) ⓘSaint-Sauveur meteorite, Saint-Jory, Toulouse, Haute-Garonne, Occitanie, France
References
Bischoff, A. & Keil, K. (1984) Al-rich objects in ordinary chondrites: Related origin of carbonaceous and ordinary chondrites and their constituents. Geochimica et Cosmochimica Acta 48 (4): 693-709.
Kessel, R. (2002). The activity of chromite in multicomponent spinels: An experimental study with implications for the metamorphic history of equilibrated ordinary chondrites (Thesis). California Institute of Technology: Pasadena, California. 219 pages.
Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. Meteoritics & Planetary Science 45(1):123-134. (Jan 2010). between textural maturity and temperature: Geochimica et Cosmochimica Acta 71(7):1855-1881. (April 2007).
 
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