|El Médano 096|
|Basic information||Name: El Médano 096|
This is an OFFICIAL meteorite name.
Abbreviation: EM 096
Observed fall: No
Year found: 2011
Mass: 11.1 g
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|
Writeup from MB 102:
El Médano 096 24°51’S, 70°32’W
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.
Avenue Philibert, Europole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 9 Mar 2016)
|References:||Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015|
This is 1 of 909 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
This is 1 of 934 approved meteorites from Chile (plus 9 unapproved names) (plus 1 impact crater)
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