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| El Médano 500 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: El Médano 500 This is an OFFICIAL meteorite name. Abbreviation: EM 500 Observed fall: No Year found: 2022 Country: Chile Mass:  56.4 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 25 approved meteorites classified as CVred3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 4 Mar 2023 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
El Médano 500 (EM 500) 24°41’S, 70°19’W Antofagasta, Chile Find: 2022 Nov Classification: Carbonaceous chondrite (CVred3) Physical characteristics: Brown stone. Cut face reveals a dark brown interior with large chondrules. A few CAIs are visible to the naked eye. Petrography: (T. Prestgard, IPAG) Chondrite consisting of chondrules (1074±421 µm, n= 14) and CAIs (0.5 to 1 mm) set in a fine-grained matrix (32.6 vol%, as determined by point counting: n= 595). Troilite and metal can be found in chondrules and in the matrix. They make up about 1.7 vol% and 1.5 vol% of the section, respectively. Magnetite is rare. Weathering products of metal and troilite are abundant, with oxihydroxide veins often crosscutting chondrules. Geochemistry: (C. Sadaka, CEREGE) Olivine Fa9.0±11.5, PMD=44%, range Fa0.9-34.0 (n=6). Orthopyroxene Fs1.6.0±0.2Wo1.3±1.1 (n=5) Classification: Carbonaceous chondrite (CVred3). CVred based on metal abundance and the absence of Ni-rich sulfides. Specimens: Type specimen and main mass at CEREGE | ||||||||||||||||||||||||||||||||||||
| Data from: MB112 Table 0 Line 0: |
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| Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 29 Oct 2018) IPAG: Institut de Planétologie et d’Astrophysique de Grenoble 414, Rue de la Piscine Domaine Universitaire 38400 St-Martin d’Hères , France (institutional address; updated 1 Aug 2013) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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Geography:
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Statistics: This is 1 of 2514 approved meteorites from Antofagasta, Chile (plus 10 unapproved names) (plus 1 impact crater) This is 1 of 2543 approved meteorites from Chile (plus 16 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||
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