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El Médano 362
Basic information Name: El Médano 362
     This is an OFFICIAL meteorite name.
Abbreviation: EM 362
Observed fall: No
Year found: 2016
Country: Chile
Mass:help 18.56 kg
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 478 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 22 Apr 2017
Writeuphelp
Writeup from MB 106:

El Médano 362 (EM 362)        24°51’S, 70°32’W

Antofagasta, Chile

Find: 2016 Nov

Classification: Carbonaceous chondrite (CO3)

History: The stones were found on the surface in the Atacama desert.

Physical characteristics: Brownish stones. Cut surface reveals homogeneous dark brown interior with small chondrules and metal grains.

Petrography: Chondrules and small CAIs set in an iron rich fine grained matrix. Mean apparent chondrule diameter 190±900 μm (N=45). Modal abundances: chondrules and chondrule fragments 64 vol%, matrix 36 vol%. Abundant FeNi metal.

Geochemistry: Olivine Fa22.6±21.5, range Fa0.7-60.6, PMD 88%, N=15. Cr2O3 in ferroan olivine is 0.07±0.03 wt% (N=12). Orthopyroxene Fs8.7 Wo0.9 (N=1). Magnetic susceptiblity log χ (× 10-9 m3/kg) = 4.47.

Classification: CO3. Moderate weathering

Specimens: Type specimen and polished sections at CEREGE. Main mass with ArtMet collection, Poland.

Data from:
  MB106
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:deflation surface
Date:2016 Nov
Latitude:24°51'S
Longitude:70°32'W
Mass (g):18562
Pieces:many
Class:CO3
Weathering grade:moderate
Fayalite (mol%):22.6±21.5 (N=15)
Ferrosilite (mol%):8.7 (N=1)
Wollastonite (mol%):0.9
Magnetic suscept.:4.47
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):20.4
Type spec location:CEREGE
Main mass:ArtMet collection, Poland
Finder:anonymous
Comments:work name LM17; submitted by Jérôme Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Europole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 9 Mar 2016)
ARTMET: Meteorites and Art UL. Baczynskiego 2 45-317 Opole, Poland (private address; updated 7 Apr 2014)
Catalogs:
References: Published in Meteoritical Bulletin, no. 106, in preparation (2017)
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Geography:

Chile
Coordinates:
     Recommended::   (24° 51'S, 70° 32'W)

Statistics:
     This is 1 of 1010 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
     This is 1 of 1035 approved meteorites from Chile (plus 9 unapproved names) (plus 1 impact crater)
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