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| Chug Chug 044 | |||||||||||||||||||||||||||||||||||||||
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| 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:  1270 g | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 2051 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 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
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: |
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| 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) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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| Photos: |
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Geography:
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Statistics: This is 1 of 3160 approved meteorites from Antofagasta, Chile (plus 11 unapproved names) (plus 1 impact crater) This is 1 of 3189 approved meteorites from Chile (plus 14 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||||
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