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Los Vientos 263
Basic information Name: Los Vientos 263
     This is an OFFICIAL meteorite name.
Abbreviation: LoV 263
Observed fall: No
Year found: 2018
Country: Chile
Mass:help 4.88 kg
Classification
  history:
Recommended:  Pallasite, ungrouped    [explanation]

This is 1 of 8 approved meteorites classified as Pallasite, ungrouped.   [show all]
Search for other: Metal-rich meteorites, Pallasites
Comments: Approved 1 Jan 2019
Writeuphelp
Writeup from MB 108:

Los Vientos 263 (LoV 263)        24°40’S, 69°45’W

Antofagasta, Chile

Find: 2018 Jan 18

Classification: Pallasite (ungrouped)

History: Found by Luc Labenne in the Los Vientos collection area.

Physical characteristics: One stone

Petrography: (R. Hewins, S. Pont, B. Zanda, MNHNP) The grain size is about 2-3 mm. Approximately equal quantities of metal, olivine and pyroxene. Fine inclusions of troilite and chromite in the silicates.

Geochemistry: Mineral compositions and Geochemistry: (R. Hewins and S. Pont, MNHNP; J. Gattacceca and C. Sonzogni, CEREGE; M. Humayun, FSU Oxygen isotopic composition (J) from analysis of one acid-washed 1.5 mg aliquot of a powdered 10 mg bulk silicate sample is δ17O=2.09‰, δ18O=4.34‰, Δ17O=-0.187‰ (linearized, slope 0.5247, analytical uncertainties 0.08‰, 0.12‰, 0.03‰, respectively). The δ18O distinguishes this meteorite from main-group pallasites. The kamacite contains 5.7% Ni (EMP), 5.65% Ni, s.d. 0.05 (ICP-MS), making it distinct from metal in other pallasites. The chromite has low Al like Brahin. The olivine is Fo86.9Fa13.1 and pyroxene En87.4Fs11.4Wo1.2.

Classification: (R. Hewins MNHN) Pallasite (ungrouped).

Specimens: The main mass is held by Labenne Meteorites. The type specimen consists of 21 g at MNHNP.

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:2018 Jan 18
Latitude:24°40'S
Longitude:69°45'W
Mass (g):4880
Pieces:1
Class:Pallasite, ungrouped
Weathering grade:low
Fayalite (mol%):13.1
Ferrosilite (mol%):11.4
Wollastonite (mol%):1.2
Classifier:R. Hewins MNHNP
Type spec mass (g):21
Type spec location:MNHNP
Main mass:Labenne Meteorites
Comments:work name LM AW; submitted by R. Hewins
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)
MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
MNHN: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
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Geography:

Chile
Coordinates:
     Recommended::   (24° 40'S, 69° 45'W)

Statistics:
     This is 1 of 1433 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 1460 approved meteorites from Chile (plus 11 unapproved names) (plus 1 impact crater)
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