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El Médano 322
Basic information Name: El Médano 322
     This is an OFFICIAL meteorite name.
Abbreviation: EM 322
Observed fall: No
Year found: 2013
Country: Chile
Mass:help 359 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  H5-melt breccia
Recommended:  H5-melt breccia    [explanation]

This is 1 of 17 approved meteorites classified as H5-melt breccia.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 15 Oct 2016
Writeuphelp
Writeup from MB 105:

El Médano 322 (EM 322)        ~24°51’S, ~70°32’W

Antofagasta, Chile

Find: 2013 Nov 2

Classification: Ordinary chondrite (H5, melt breccia)

Petrography: Chondritic breccia composed of large type 5 clasts in a melt matrix. The type 5 clasts show pervasive shock darkening, with abundant troilite and metal veinlets and droplets. Chondrules are visible, and plagioclase average size is below 50 μm. Most metal and sulfides are in the form of eutectic mixtures with grain size to mm. Plagioclase-chromite assemblages to several hundreds μm are found. The melt part also contains troilite and metal eutectic mixtures, with smaller average grain size compared to the clasts.

Geochemistry: Olivine and orthopyroxene compositions are the same in the molten host and the type 5 clasts

Classification: H5-impact melt breccia.

Data from:
  MB105
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:deflation surface
Date:2013 Nov 2
Latitude:~24°51'S
Longitude:~70°32'W
Mass (g):359
Pieces:2
Class:H5-melt breccia
Weathering grade:W0
Fayalite (mol%):16.7±0.3 (N=5)
Ferrosilite (mol%):16.8±0.2 (N=3)
Wollastonite (mol%):1.2±0.1
Magnetic suscept.:5.37
Classifier:J. Gattacceca, H. Pourkhorsandi, B. Devouard, CEREGE
Type spec mass (g):34
Type spec location:CEREGE
Main mass:CEREGE
Finder:Jihed Dridi
Comments:Submitted by Jérôme Gattacceca
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography:

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

Statistics:
     This is 1 of 1387 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 1414 approved meteorites from Chile (plus 11 unapproved names) (plus 1 impact crater)
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