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El Médano 389
Basic information Name: El Médano 389
     This is an OFFICIAL meteorite name.
Abbreviation: EM 389
Observed fall: No
Year found: 2016
Country: Chile
Mass:help 1186 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 496 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 3 Aug 2018
Writeuphelp
Writeup from MB 107:

El Médano 389 (EM 389)        ~24°51’S, ~70°32’W

Antofagasta, Chile

Find: 2016 Nov 04

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was found in January 2016 in the Atacama desert by Rodrigo Martinez while he was looking for meteorites

Petrography: (J. Gattacceca, CEREGE) Chondrules (predominantly of type I) and small CAIs set in a fine-grained Fe-rich matrix. Average chondrule apparent size 300 μm (N=26). Opaques are metal and troilite.

Geochemistry: Olivine in the range Fa0.5-69.1 (mean Fa16.8±18.2, PMD=89%, N=25). Cr2O3 in ferroan olivine 0.11±0.09 wt.% (N=22). Low-Ca pyroxene Fs5.5Wo1.0 and Fs4.8Wo0.9 (N=2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.42.

Classification: Carbonaceous chondrite (CO3). Minimal weathering

Specimens: 53 g and a polished section at CEREGE. Main mass at MMC.

Data from:
  MB107
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:deflation surface
Date:2016 Nov 04
Latitude:~24°51'S
Longitude:~70°32’W
Mass (g):1186
Pieces:1
Class:CO3
Weathering grade:minimal
Fayalite (mol%):16.8±18.2 (N=25)
Magnetic suscept.:4.42
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):53
Type spec location:CEREGE
Main mass:MMC
Finder:Rodrigo Martinez
Comments:work name RM567; 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 5 Apr 2018)
MMC: Museo del Meteorito, Tocopilla 401, San Pedro de Atacama, Chile. or Alonso de Ercilla 1250, La Herradura, Coquimbo, Chile, Chile; Website (institutional address; updated 11 Mar 2014)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
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Geography:

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

Statistics:
     This is 1 of 1181 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
     This is 1 of 1208 approved meteorites from Chile (plus 6 unapproved names) (plus 1 impact crater)
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