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Chug Chug 044
Basic information Name: Chug Chug 044
     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 1270 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1715 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 1 Nov 2020
Writeuphelp
Writeup from MB 109:

Chug Chug 044        22°29.969’S, 69°10.181’W

Antofagasta, Chile

Find: 2018 Mar 18

Classification: Ordinary chondrite (L4)

History: The meteorite (one piece) was found on March 31, 2018, by Ilya Chaplygin during a meteorite searching expedition organized by Timur Kryachko.

Physical characteristics: Total mass of the piece is about 1270 g. 90% of the meteorite is covered by black, rough fusion crust with cracks. Some parts are weathered or broken revealing uneven surface dominated by rounded chondrules. Bottom side is colored by light-reddish desert material. The interior of the meteorite is light-brown with clearly visible abundant chondrules and metal particles.

Petrography: (Pavel Yu. Plechov, FMMR). Petrographic observation of a polished section show that the meteorite consist of chondrules sizes vary from 300 to 750 µm (with predominant size 500-750 µm) in recrystallized matrix. Olivine, low-Ca pyroxene and metall blebs are the main minerals in matrix. Olivine is equilibrated (with PMD of FeO 1.14%) but low-Ca pyroxene is not equilibrated. Nonsilicates is present and consist of both merrillite and Cl-apatite. These features indicate a petrological type of 4 for the meteorite. Metall and sulfides are fresh but have rare weathering products (goethite) that occur as veins and in situ alteration of FeNi-metals and troilite (weathearing grade W1). Olivine has no undulatory extinction, and opaque shock veins and melt pockets are absent, indicating a shock stage of S1.

Geochemistry: Mineral composition and Geochemistry: EDS analyses (Pavel Yu. Plechov, FMMR, Sergey Ev. Borisovskiy, IGEM). The primary chondrite paragenesis includes olivine Fa25.2±1.4 (N=25), Low-Ca pyroxene Fs12.6±5.5Wo1.01±0.91 (N=22), chromite Crt36.8±51.9Spl36.9±34.7 (N=2).

Classification: Ordinary chondrite. L4 , S1, W1.

Specimens: Type specimen: 62 g and thin section at FMMR.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:plain
Date:2018 Mar 18
Latitude:22°29.969'S
Longitude:69°10.181'W
Mass (g):1270
Pieces:1
Class:L4
Shock stage:S1
Weathering grade:W1
Fayalite (mol%):25.3±1.41 (N=25)
Ferrosilite (mol%):12.6±5.5 (N=22)
Wollastonite (mol%):1.09±0.91 (N=22)
Classifier:Pavel Yu. Plechov, FMMR
Type spec mass (g):62
Type spec location:FMMR
Main mass:Ilya Chaplygin
Finder:Ilya Chaplygin
Comments:field name 008i; 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. 109, in preparation (2020)
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Photos:
CreditPhotos
Public domain photographs:
Pavel Plechov   
Geography:

Chile
Coordinates:
     Recommended::   (22° 29' 58"S, 69° 10' 11"W)

Statistics:
     This is 1 of 1974 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 2002 approved meteorites from Chile (plus 11 unapproved names) (plus 1 impact crater)
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