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Sierra Gorda 027
Basic information Name: Sierra Gorda 027
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2019
Country: Chile
Mass:help 36 g
Classification
  history:
Recommended:  H5-melt breccia    [explanation]

This is 1 of 23 approved meteorites classified as H5-melt breccia.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Mar 2020
Writeuphelp
Writeup from MB 109:

Sierra Gorda 027        22°30.27’S, 69°8.54’W

Antofagasta, Chile

Find: 24 Oct 2019

Classification: Ordinary chondrite (H5, melt breccia)

Petrography: The meteorite is composed of chondrules, chondrule fragments and fragments of recrystallized aggregates of silicates, metal and sulfides; all the components are embedded in a fine-grained interstitial aggregate of pyroxene crystals and feldspar that resembles devitrified melt rock. The mineral grains and the chondrule fragments are intensively darkened due to occurrence of sub-micrometer troilite and metal inclusions that are highly abundant in the matrix as well. The main phases are olivine, pyroxene, metallic Fe, troilite and feldspar; minor chromite. Olivine has strong undulatory extinction.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:24 Oct 2019
Latitude:22°30.27'S
Longitude:69°8.54'W
Mass (g):36
Pieces:1
Class:H5-melt breccia
Weathering grade:W1
Fayalite (mol%):17.9±0.36 (N=11)
Ferrosilite (mol%):16.0±0.24 (N=12)
Wollastonite (mol%):2.0±0.44 (N=12)
Classifier:Lorenz C. A., Vernad
Type spec mass (g):7.3
Type spec location:Vernad.
Main mass:Mr. M. Nepomiluev, ramatahatta2@mail.ru
Finder:Mr. M. Nepomiluev
Comments:field name is Calama 6-41M; 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' 16"S, 69° 8' 32"W)

Statistics:
     This is 1 of 1771 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 1799 approved meteorites from Chile (plus 11 unapproved names) (plus 1 impact crater)
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