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| Los Vientos 171 | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Los Vientos 171 This is an OFFICIAL meteorite name. Abbreviation: LoV 171 Observed fall: No Year found: 2016 Country: Chile Mass:  20.23 kg | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 7 approved meteorites classified as LL3.1. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 10 May 2017 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 106:
Los Vientos 171 (LoV 171) 24°41’S, 69°46’W Antofagasta, Chile Find: 2016 Nov Classification: Ordinary chondrite (LL3.1) History: Five stones were found within about 50 m, lying at the surface in the Atacama desert. Physical characteristics: Fully crusted stones. Cut surface reveals a gray interior with well delineated chondrules up to several mm. Petrography: Closely packed chondrules with mean apparent diameter 630±280 μm (N=45). FeNi metal and troilite show almost no weathering. Geochemistry: Olivine Fa16.6±7.9 (Fa1.0-27.7), PMD 40%, N=9. Cr2O3 in ferroan olivine is 0.13±0.1 wt%. Orthopyroxene Fs6.4±6.3Wo2.5±2.5 (Fs1.6-20.2), N=6. Magnetic susceptiblity log χ (× 10-9 m3/kg) = 4.51. Saturation magnetization is 1.68 Am2/kg, in the range of LL3 falls (5.28±2.02 Am2/kg, N=5) and well below the range of L3 falls (21.7±3.1 Am2/kg, N=3), see Gattacceca et al. 2014. Based on the structural order of the polyaromatic matter assessed by Raman spectroscopy (Lydie Bonal, IPAG), this meteorite appears to be more metamorphosed than Semarkona (LL3.0) and slightly less metamorphosed than Bishunpur (LL3.1). The Raman spectroscopy parameters of interest are FWHM-D (cm-1)=191.4 ± 8.3, ID/IG= 1.04 ±0.02 (see Bonal et al., 2016, figure 7). Classification: LL3.1. Sub-type based structural order of polyaromatic organic matter assessed by Raman spectroscopy. LL versus L classification based on saturation magnetization. Specimens: Type specimen and polished sections at CEREGE. Main mass with ArtMet collection, Poland. | ||||||||||||||||||||||||||||||||||||||
| Bibliography: |
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| Data from: MB106 Table 0 Line 0: |
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| 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) 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) ARTMET: Meteorites and Art UL. Baczynskiego 2 45-317 Opole, Poland (private address; updated 7 Apr 2014) |
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| References: | Published in Meteoritical Bulletin, no. 106, in preparation (2017)
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Geography:
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Statistics: This is 1 of 1020 approved meteorites from Antofagasta, Chile (plus 1 impact crater) This is 1 of 1045 approved meteorites from Chile (plus 9 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||||
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