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| El Médano 262 | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: El Médano 262 This is an OFFICIAL meteorite name. Abbreviation: EM 262 Observed fall: No Year found: 2015 Country: Chile Mass:  26 kg | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 636 approved meteorites (plus 1 unapproved name) classified as CO3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 30 Jun 2015 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 104:
El Médano 262 ~24°51’S, ~70°32’W Antofagasta, Chile Find: 2015 Jan 5 Classification: Carbonaceous chondrite (CO3) History: The stones were found in the Atacama desert by E. Christensen while looking for meteorites Physical characteristics: Dark brownish irregular stones without fusion crust. Cut surface reveals a dark brown interior with abundant small chondrules. Petrography: (J. Gattacceca, CEREGE) Abundant chondrules (predominantly of type I) and CAIs in a fine-grained Fe rich matrix. Chondrule:matrix ratio is 57:43. Average chondrule apparent size 180±120 μm (N=24). Geochemistry: Olivine in the range Fa0.5-52.9 (mean Fa19.3±16.6, PMD=73%, N=18). Cr2O3 in ferroan olivine 0.08±0.05 wt.% (N=15). Low-Ca pyroxene Fs2.3±1.2 Wo1.5±0.8 (N=10). Magnetic susceptibility log χ =4.41 (χ in 10-9 m3/kg). Classification: Carbonaceous chondrite (CO3). Minimal weathering Specimens: 52 g at CEREGE. Main mass with Eric Christensen. | ||||||||||||||||||||||||||||||||||||||
| Data from: MB104 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) |
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| References: | Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography:
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Statistics: This is 1 of 2687 approved meteorites from Antofagasta, Chile (plus 9 unapproved names) (plus 1 impact crater) This is 1 of 2716 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||||
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