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Los Vientos 123
Basic information Name: Los Vientos 123
     This is an OFFICIAL meteorite name.
Abbreviation: LoV 123
Observed fall: No
Year found: 2015
Country: Chile
Mass:help 575 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  CO3.1
Recommended:  CO3.1    [explanation]

This is 1 of 13 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
Writeuphelp
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:
  • Bonal L., Quirico E., Flandinet L., and Montagnac G. (2016) Thermal history of type 3 chondrites from the Antarctic meteorite collection determined by Raman spectroscopy of their polyaromatic carbonaceous matter. Geochim. Cosmochim. Acta 189 312-337. (link)
Data from:
  MB105
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:deflation surface
Date:2015 Jan 27
Latitude:~24°41'S
Longitude:~69°46'W
Mass (g):575
Pieces:1
Class:CO3.1
Weathering grade:low
Fayalite (mol%):13.6±18.7 (0.3-72.4, N=19)
Ferrosilite (mol%):15.1±19.6 (1.1-42.8, N=3)
Wollastonite (mol%):0.9±0.4
Magnetic suscept.:4.74
Classifier:J. Gattacceca, H. Pourkhorsandi, CEREGE
Type spec mass (g):49
Type spec location:CEREGE
Main mass:MMC
Finder:Rodrigo Martinez
Comments:Submitted by Jérôme Gattacceca
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)
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° 41'S, 69° 46'W)

Statistics:
     This is 1 of 1453 approved meteorites from Antofagasta, Chile (plus 4 unapproved names) (plus 1 impact crater)
     This is 1 of 1480 approved meteorites from Chile (plus 10 unapproved names) (plus 1 impact crater)
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