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| El Médano 096 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: El Médano 096 This is an OFFICIAL meteorite name. Abbreviation: EM 096 Observed fall: No Year found: 2011 Country: Chile Mass:  11.1 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 91 approved meteorites classified as Acapulcoite. [show all] Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 29 Jan 2013 | ||||||||||||||||||||||||||||||||||||
| Writeup |
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: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||||||||
| Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography:
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Statistics: This is 1 of 2908 approved meteorites from Antofagasta, Chile (plus 10 unapproved names) (plus 1 impact crater) This is 1 of 2937 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||
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