header
  MetSoc Home            Publications            Search Meteorites  
Search the Meteoritical Bulletin Database
Last update: 19 Aug 2017
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls
What's new
  in the last:
Limit to approved meteorite names
Search text:  
El Médano 096
Basic information Name: El Médano 096
     This is an OFFICIAL meteorite name.
Abbreviation: EM 096
Observed fall: No
Year found: 2011
Country: Chile
Mass:help 11.1 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2014)  Acapulcoite
Recommended:  Acapulcoite    [explanation]

This is 1 of 68 approved meteorites classified as Acapulcoite.   [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites
Comments: Approved 29 Jan 2013
Writeuphelp
Writeup from MB 102:

El Médano 096        24°51’S, 70°32’W

Antofagasta, Chile

Found: 2011 Oct 26

Classification: Primitive achondrite (Acapulcoite)

History: A single stone was found in the Atacama desert by Aurore Hutzler in October 2011.

Physical characteristics: A single 11 g brownish stone.

Petrography: (J. Gattacceca, CEREGE) The meteorite has an equigranular recrystallized texture with triple junctions. Typical grain size of olivine, pyroxene, and plagioclase is ~200 μm. Modal abundances: olivine + pyroxene 54%, plagioclase 10%, FeNi metal 12%, oxides (from weathering) 21%, troilite 2%, chromite 0.4%. Ca phosphate is present. Magnetic susceptibility log χ = 5.44 (c in 10-9 m3/kg).

Geochemistry: Olivine Fa11.6±0.2 (FeO/MnO=22.1), Orthopyroxene Fs11.7±0.3Wo3.2±0.3 (FeO/MnO=15.3), Plagioclase An18.0±3.8Ab79.2±3.3Or2.8±0.5. Chromite Cr/(Cr+Al)= 0.85. Oxygen isotopes (C. Sonzogni, J. Gattacceca, CEREGE): analysis of a 1.5 mg acid-washed sample by laser fluorination gave δ17O = 1.41, δ18O = 4.30, Δ17O = -0.82 (all per mil).

Classification: Acapulcoite. Weathering is moderate.

Specimens: 5 g and a polished section are on deposit at CEREGE. Main mass at Sernageomin.

Data from:
  MB102
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:deflation surface
Date:2011 Oct 26
Latitude:24°51'S
Longitude:70°32'W
Mass (g):11.1
Pieces:1
Class:Acapulcoite
Fayalite (mol%):11.6±0.2
Ferrosilite (mol%):11.7±0.3
Wollastonite (mol%):3.2±0.3
Magnetic suscept.:5.44
Classifier:J. Gattacceca, A. Hutzler, CEREGE
Type spec mass (g):10
Type spec location:CEREGE
Main mass:CEREGE
Finder:Aurore Hutzler
Comments:Submitted by J. Gattacceca
Plots: O isotopes:  
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

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

Statistics:
     This is 1 of 1030 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
     This is 1 of 1055 approved meteorites from Chile (plus 9 unapproved names) (plus 1 impact crater)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page