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Los Vientos 364
Basic information Name: Los Vientos 364
     This is an OFFICIAL meteorite name.
Abbreviation: LoV 364
Observed fall: No
Year found: 2019
Country: Chile
Mass:help 180 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 513 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 1 Nov 2020
Writeuphelp
Writeup from MB 109:

Los Vientos 364 (LoV 364)        24º40.108’S, 69º53.504’W

Antofagasta, Chile

Find: 2019 Feb 1

Classification: HED achondrite (Eucrite)

History: Marc Jost found the 180 g sample on February 1, 2019, while he was hunting for meteorites on the desert pavement in Los Vientos dense collection area of the Atacama Desert in Chile.

Physical characteristics: Sample is a broken stone ~50% covered by a wind ablated brownish fusion crust. The fusion crust, where present, is still shiny and shows some relict flow lines and a faint roll-over lip from flight orientation. The cut face shows the interior is a breccia dominated by granular material with a couple of fine-grained clasts and a larger clast with a recrystallized texture.

Petrography: Description and classification (A. Love, App) Sample is a recrystallized breccia composed of coarse-grained (~1000µm), subophitic gabbro and finer-grained (~500 µm) basaltic clasts set within a recrystallized matrix of related mineral debris. Pyroxenes are exsolved and share 120º grain boundaries with adjacent grains. Additional minerals are: plagioclase, a SiO2 polymorph, ilmenite and chromite.

Geochemistry: (A. Love, App) Pigeonite (Fs58.7±0.2Wo6.2±0.6, Fe/Mn=30.7±0.3, Mg#37.3±0.2, n=8); high Ca pyroxene (Fs29.7±0.4Wo41.7±0.4, Fe/Mn=31.6±0.7, n=8); plagioclase (An91.3±0.3Or0.3±0.0, n=6).

Classification: HED Achondrite (recrystallized basaltic and gabbroic eucrite breccia). Based on mineral compositions, Fe/Mn ratios and Mg#’s, this sample is composed of equilibrated basaltic eucrite clasts. Textures and grainsizes indicate this is a recrystallized breccia. Low weathering, low shock.

Specimens: Marc Jost (SJS) holds the main mass. A fusion-crusted endcut and partial slice weighing 20.88g and a polished thin section are on deposit at App.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:2019 Feb 1
Latitude:24º40.108'S
Longitude:69º53.504'W
Mass (g):180
Pieces:1
Class:Eucrite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):58.7±0.2; 29.7±0.4
Wollastonite (mol%):6.2±0.6; 41.7±0.4
Magnetic suscept.:2.76
Classifier:A. Love, App
Type spec mass (g):20.88
Type spec location:App
Main mass:Marc Josts (SJS)
Finder:Marc Jost (SJS)
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Chile
Coordinates:
     Recommended::   (24° 40' 6"S, 69° 53' 30"W)

Statistics:
     This is 1 of 2063 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 2091 approved meteorites from Chile (plus 12 unapproved names) (plus 1 impact crater)
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