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Sierra Gorda 040
Basic information Name: Sierra Gorda 040
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2018
Country: Chile
Mass:help 110 g
Classification
  history:
Recommended:  L6    [explanation]

This is 1 of 11582 approved meteorites (plus 10 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 19 Sep 2020
Writeuphelp
Writeup from MB 109:

Sierra Gorda 040        22°30.71’S, 69°2.19’W

Antofagasta, Chile

Find: 28 Oct 2018

Classification: Ordinary chondrite (L6)

Petrography: The meteorite of recrystallized chondrite texture is crossed by clast-laden melt vein of severall mm in thickness. The olivine of the meteorite main mass demonstrates undulatory extinction or weakly- to medium-developed mosaizism; planar deformation features in olivine are rare. These optic features of olivine point to the shock stage S4. The olivine in the melt vein demonstrates strong mosaicizm; the ringwoodite and wadsleite are widely distributed in the melt vein that corresponds to the shock stage S6.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:28 Oct 2018
Latitude:22°30.71'S
Longitude:69°2.19'W
Mass (g):110
Pieces:Many
Class:L6
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):23.3±0.4 (N=12)
Ferrosilite (mol%):19.6±0.4 (N=12)
Wollastonite (mol%):2.2±0.1 (N=12)
Classifier:Lorenz C. A., Vernad
Type spec mass (g):23.8
Type spec location:Vernad
Main mass:Mr. M. Nepomiluev, ramatahatta2@mail.ru
Finder:Mr. M. Nepomiluev
Comments:Field name is M3-82; analyst T. Kryachko (Technograd, Moscow); submitted by Lorenz C.A., Vernad
Institutions
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Chile
Coordinates:
     Recommended::   (22° 30' 43"S, 69° 2' 11"W)

Statistics:
     This is 1 of 2097 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 2125 approved meteorites from Chile (plus 12 unapproved names) (plus 1 impact crater)
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