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Sierra Gorda 023
Basic information Name: Sierra Gorda 023
     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 2.09 kg
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  L6
Recommended:  L6    [explanation]

This is 1 of 12192 approved meteorites (plus 7 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 27 Sep 2019
Writeuphelp
Writeup from MB 108:

Sierra Gorda 023        22°30.020’S, 69°10.745’W

Antofagasta, Chile

Find: 31 Mar 2018

Classification: Ordinary chondrite (L6)

History: Meteorite (1 piece) was found on March 31, 2018, by Ilya Chaplygin during a desert meteorite search organized by Timur Kryachko.

Physical characteristics: Individual stone, 2090 g, with angular shape and rough regmaglypts. Brown stone partly covered with dark-brown fusion crust. Fresh cut of the meteorite shows light-brown weathered interior and grains of metal. Bottom part is covered with light-colored desert material. Dimensions 10 × 10 × 9.5 cm.

Geochemistry: Mineral composition and Geochemistry: EDS-WDS analyses (V.I. Taskaev, IGEM RAS). The primary chondrite paragenesis includes olivine Fa24.97±1.81 (N=15), Low-Ca pyroxene Fs21.0±0.4Wo1.74±0.25 (N=17), plagioclase Ab94.1An10.8Or5.1 (N=2), high-Ca pyroxene En47.06Fs9.09Wo43.71 (N=2). Composition of kamacite (in wt.%): Fe 93.52, Ni 4.99, Co 0.54 . Taenite contain 37.57 and 0.24 wt.% of Ni and Co respectively. Troilite is close to ideal FeS.

Classification: (Pavel Yu. Plechov, FMMR). Ordinary chondrite. L6, S1, W1

Specimens: Mr. I. Chaplygin holds main mass about 1.8 kg. 289 g and thin section, FMMR.

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:plain
Date:31 Mar 2018
Latitude:22°30.020'S
Longitude:69°10.745'W
Mass (g):2090
Pieces:1
Class:L6
Shock stage:S1
Weathering grade:W1
Fayalite (mol%):24.97±1.81 (N=15)
Ferrosilite (mol%):21.0±0.4 (N=17)
Wollastonite (mol%):1.74±0.26 (N=17)
Classifier:Pavel Yu. Plechov, FMMR
Type spec mass (g):289
Type spec location:FMMR
Main mass:Ilya Chaplygin
Finder:Mr. I. Chaplygin
Comments:field name is 007i; FMM name is FN332; submitted by Pavel Yu. Plechov, pplechov@gmail.com
Institutions
   and collections
IGEM: Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetny Per., 35, Moscow, 119017 , Russia (institutional address; updated 16 Dec 2010)
FMMR: Fersman Mineralogical Museum, Leninskiy prospekt 18 korpus 2, Moscow, Russia, 119071, Russia; Website (institutional address; updated 24 Feb 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
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Geography:

Chile
Coordinates:
     Recommended::   (22° 30' 1"S, 69° 10' 45"W)

Statistics:
     This is 1 of 2320 approved meteorites from Antofagasta, Chile (plus 9 unapproved names) (plus 1 impact crater)
     This is 1 of 2349 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater)
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