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| Chug Chug 019 | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Chug Chug 019 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2018 Country: Chile Mass:  5 g | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 23 approved meteorites classified as H4-an. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 5 Apr 2020 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 109:
Chug Chug 019 22°29.46’S, 69°07.57’W Antofagasta, Chile Find: 27 Oct 2018 Classification: Ordinary chondrite (H4, anomalous) History: one piece of meteorite (field number 4-57) was found in the the desert by Mr. T. V. Kryachko. Physical characteristics: a sample of meteorite has a brown fusion crust. Petrography: M. A. Ivanova (Vernad) Meteorite consists of well-defined chondrules, 0.34±0.21 cm in size, embedded in matrix enriched in Fe-oxides. POP and PP chondrules are abundand, BO and PR are rare; minerals are olivine, pyroxene, Fe,Ni-metal and iron oxides, sulfide, quartz, phosphate, carbonate and chromite. Glass of plagioclase composition occurs in chondrules. Shock stage is S1, weathering grade is W3. Geochemistry: Mineral compositions and geochemistry: M. A. Ivanova. Olivine Fa10.2±0.28 (N=39), orthopyroxene Fs11.6±4.44; Wo0.64±0.47, Fe/Mn = 21.2±8.7 (N=32) , clinopyroxene is represented by pigeonite : Fs29-32Wo8-12 and augite Fs3-4Wo37-43; plagioclase glass in chondrule has a variable composition: Ab44-88Or0.7-13; Fe,Ni-metal contains 4.0-15.7 wt% Ni, 0.48±0.04 wt% Co; sulfide is represented by troilite. Oxygen isotopic composition (OU): δ17O = 3.100, δ18O 4.589, Δ17O = 0.714; δ17O 3.083, δ18O = 4.605, Δ17O 0.688 (all ‰). Classification: based on chondrules size (0.34 ± 0.21 cm), very reduced silicates compared to H chondrite (Fa10), Co content (0.48 wt.%) in low-Ni Fe,Ni-metal and oxygen isotopic composition, this meteorite is an anomalous H chondrite. Based on homogeneous olivine composition but very clear boundaries of chondrules and variable low-Ca pyroxene composition, petrological type should be 4. Specimens: individual sample of meteorite (1.54 g) and 1 polished section are deposited in Vernad. | ||||||||||||||||||||||||||||||||||||||
| Data from: MB109 Table 0 Line 0: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||||||||||
| Institutions and collections |
OU: Planetary and Space Sciences
Department of Physical Sciences
The Open University
Walton Hall
Milton Keynes
MK7 6AA
United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011) Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016) |
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| References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:
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Statistics: This is 1 of 2620 approved meteorites from Antofagasta, Chile (plus 10 unapproved names) (plus 1 impact crater) This is 1 of 2649 approved meteorites from Chile (plus 16 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||||
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