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| Los Vientos 123 | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Los Vientos 123 This is an OFFICIAL meteorite name. Abbreviation: LoV 123 Observed fall: No Year found: 2015 Country: Chile Mass:  575 g | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 16 approved meteorites classified as CO3.1. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 23 Aug 2016 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 105:
Los Vientos 123 (LoV 123) ~24°41’S, ~69°46’W Antofagasta, Chile Find: 2015 Jan 27 Classification: Carbonaceous chondrite (CO3.1) History: Found in January 2015 in the Atacama desert by Rodrigo Martinez while looking for meteorites. Physical characteristics: A single fully crusted stone. Cut surface reveals a dark interior wirh small chondrules. Petrography: (J. Gattacceca, CEREGE) Abundant chondrules (predominantly of type I) and small CAIs set in a fine-grained Fe-rich matrix (36 vol% by point counting, N=157). Average chondrule apparent size 170±150 μm (N=42). Based on the structural order of the polyaromatic matter assessed by Raman spectroscopy (L. Bonal, IPAG), this meteorite appears to be slightly less metamorphosed than Colony (CO3.1) and more metamorphosed than ALHA 77307 (CO3.05). The Raman spectroscopy parameters of interest are FWHM-D (cm-1)=187.1±3.2, ID/IG=0.95±0.02 (see Bonal et al. 2016, figure 6). Geochemistry: Olivine in the range Fa0.3-72.4 (mean Fa13.6±18.7, PMD=96%, N=19). Cr2O3 in ferroan olivine 0.41±0.20 wt.% (N=9). Low-Ca pyroxene Fs15.3±19.6Wo0.9±0.4 (N=3). Oxygen isotopic composition (J. Gattacceca, C. Sonzogni, CEREGE) from analysis of one acid-washed 1.5 mg aliquot of a powdered 200 mg bulk sample is δ17O=-6.77‰, δ18O=-3.33‰, Δ17O=-5.04‰ (linearized, slope 0.5247, analytical uncertainties 0.08‰, 0.12‰, 0.03‰ respectively). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.74. Classification: CO3.1. Subtype from Raman spectroscopy. Low weathering. Specimens: 49 g and a polished section at CEREGE. Main mass at MMC. | ||||||||||||||||||||||||||||||||||||||
| Bibliography: |
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| Data from: MB105 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 29 Oct 2018) 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) IPAG: Institut de Planétologie et d’Astrophysique de Grenoble 414, Rue de la Piscine Domaine Universitaire 38400 St-Martin d’Hères , France (institutional address; updated 1 Aug 2013) |
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| 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:
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Statistics: This is 1 of 2687 approved meteorites from Antofagasta, Chile (plus 9 unapproved names) (plus 1 impact crater) This is 1 of 2716 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||||
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