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Chug Chug 109
Basic information Name: Chug Chug 109
     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 100 g
Recommended:  H5    [explanation]

This is 1 of 10803 approved meteorites (plus 19 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 18 Sep 2021
Writeup from MB 110:

Chug Chug 109        22°29.140’S, 69°10.667’W

Antofagasta, Chile

Find: 25 Oct 2019

Classification: Ordinary chondrite (H5)

History: The meteorite was found in autumn 2019 by Atali Agakhanov during a meteorite searching expedition organized by Timur Kryachko.

Physical characteristics: Total mass is about 100 g. The surface of meteorite is dark brown with fusion crust whereas the interior is gray-brown with visible metal and chonrules.

Petrography: (Kseniya A. Konovalova, FMMR). Petrographic observation of a polished section shows that meteorite consists of well-formed chondrules in a coarse-grained matrix. Chondrules size vary from 200 to 700 µm, predominantly 300-500 µm. POP and PO chondrules include turbid glass with small diopside crystalls. These features indicate a petrological type of 5 for the meteorite. The meteorite is pervasived by weathearing products that has filled small cracks and has converted some metal and troilite to brown iron hydroxides (W2). Olivine crystals have no undulatory extinction (shock stage S1).

Geochemistry: Mineral composition and Geochemistry: EDS analyses (Atali Agakhanov, Ksenia Konovalova, FMMR). The primary chondrite paragenesis includes olivine 19.96±0.63 (N=29), Low-Ca pyroxene Fs17.8±0.6Wo2.04±1.76 (N=24), clinopyroxene Fs26.6±1Wo46.6±1.3 (Al2O3 - 0.43-3.65 wt., %, n=8). Composition of kamacite (in wt., %, n = 7): Fe - 93.04, Ni - 6.91, Co - 0.77, taenite (in wt., %) : Fe - 78.8, Ni - 23.5, Co - 0.6

Classification: (Kseniya A. Konovalova, FMMR). Ordinary chondrite. H5, S1, W2.

Specimens: 68.96 g and thin section are in the FMMR

Data from:
  Table 0
  Line 0:
Origin or pseudonym:plain
Date:25 Oct 2019
Mass (g):100
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):19.96±0.63 (N=29)
Ferrosilite (mol%):17.8±0.6 (N=24)
Wollastonite (mol%):2.04±1.76 (N=24)
Classifier:K. A. Konovalova, FMMR
Type spec mass (g):68.96
Type spec location:FMMR
Main mass:FMMR
Finder:Atali Agakhanov
Comments:Field name is MA025; submitted by Kseniya A. Konovalova, spacelikeyou@yandex.ru
   and collections
FMMR: Fersman Mineralogical Museum, Leninskiy prospekt 18 korpus 2, Moscow, Russia, 119071, Russia; Website (institutional address; updated 24 Feb 2018)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     Recommended::   (22° 29' 8"S, 69° 10' 40"W)

     This is 1 of 2160 approved meteorites from Antofagasta, Chile (plus 6 unapproved names) (plus 1 impact crater)
     This is 1 of 2189 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)
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