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Sierra Gorda 028
Basic information Name: Sierra Gorda 028
     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 16 g
Classification
  history:
Recommended:  H/L5    [explanation]

This is 1 of 9 approved meteorites classified as H/L5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), H/L chondrites, H/L chondrites (type 4-7), L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Mar 2020
Writeuphelp
Writeup from MB 109:

Sierra Gorda 028        22°30.09’S, 69°2.44’W

Antofagasta, Chile

Find: 25 Mar 2019

Classification: Ordinary chondrite (H/L5)

Petrography: (Lorenz C.A., Vernad) The meteorite has chondritic texture and is composed of chondrule fragments, minor poorly lineated chondrules, and metal and troilite grains, set in minor recrystallized granular matrix. Modal abundance of metal is 4 vol%, troilite 3 vol%. Silicate grains often have finest troilite network. Olivine has undulatory and mosaic extinction, irregular and planar fractures and planar deformation features. Feldspar is partly isotropic. Chromite-feldspar objects were found. The meteorite is rich in troilite- and metal-troilite veinlets and aggregates. Silicate glass-troilite-metal melt pockets and melt veins are present.

Classification: The meteorite is classified as H/L5 chondrite based on pyroxene composition between that of H and L groups

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:25 Mar 2019
Latitude:22°30.09'S
Longitude:69°2.44'W
Mass (g):16
Pieces:1
Class:H/L5
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):21.8±0.24 (N=13)
Ferrosilite (mol%):18.4±0.32 (N=13)
Wollastonite (mol%):1.37±0.34
Classifier:Lorenz C. A., Vernad
Type spec mass (g):3.2
Type spec location:Vernad
Main mass:Mr. I. Kryachko, ilya.kryachko@mail.ru
Finder:Mr. I. Kryachko
Comments:field name is Calama 5-17I; 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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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Timur Kryachko   
Geography:

Chile
Coordinates:
     Recommended::   (22° 30' 5"S, 69° 2' 26"W)

Statistics:
     This is 1 of 1836 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 1864 approved meteorites from Chile (plus 11 unapproved names) (plus 1 impact crater)
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