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El Médano 216
Basic information Name: El Médano 216
     This is an OFFICIAL meteorite name.
Abbreviation: EM 216
Observed fall: No
Year found: 2011
Country: Chile
Mass:help 1323 g
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 10 Mar 2014
Writeuphelp
Writeup from MB 103:

El Médano 216        ~24°51’S, ~70°32’W

Antofagasta, Chile

Found: 2011 Jun 22

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was found in June 2011 in the Atacama desert by Rodrigo Martinez while he was looking for meteorites.

Physical characteristics: A single dull brown stone

Petrography: (J. Gattacceca, CEREGE) Abundant chondrules, predominantly of type I, in a dark matrix. Chondrule:matrix ratio is ~1:1. Chondrule mean size 228±119 μm (N=96).

Geochemistry: Olivine in type I chondrules Fa4.4±3.2 range Fa0.6-11.1, n=18; olivine in type II chondrules Fa 39.3±9.7 range Fa24.9-52.6, n=5. Cr2O3 in ferroan olivine 0.13±0.07 wt.% (N=22). Low-Ca pyroxene Fs1.5±0.7Wo1.2±0.2 (N=5). Magnetic susceptibility log χ = 4.46 (χ in 10-9 m3/kg).

Classification: Carbonaceous chondrite (CO3). Minor weathering

Specimens: 48 g and a polished section at CEREGE. Main mass at MMC.

Data from:
  MB103
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:deflation surface
Date:2011 Jun 22
Latitude:~24°51'S
Longitude:~70°32'W
Mass (g):1323
Pieces:1
Class:CO3
Weathering grade:low
Fayalite (mol%):4.4±3.2, 39.3±9.7
Ferrosilite (mol%):1.5±0.7
Wollastonite (mol%):1.2±0.2
Magnetic suscept.:4.46
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):48
Type spec location:CEREGE
Main mass:MMC
Finder:Rodrigo Martinez
Comments:Submitted by J. 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)
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. 103, in preparation (2014)
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Geography:

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

Statistics:
     This is 1 of 1020 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
     This is 1 of 1045 approved meteorites from Chile (plus 9 unapproved names) (plus 1 impact crater)
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