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| Calama 175 | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Calama 175 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2019 Country: Chile Mass:  184 g | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 17 Oct 2021 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Calama 175 22°29.036’S, 68°50.392’W Antofagasta, Chile Find: 18 Oct 2019 Classification: Ordinary chondrite (H4) History: The meteorite was found on autumn 2019 by Atali Agakhanov during a meteorite searching expedition organized by Timur Kryachko. Physical characteristics: Total mass is about 184 g. The interior of the meteorite is dark brown whereas the surface is brown to light brown with visible chondrules and metal. Petrography: (Kseniya A. Konovalova, FMMR). Petrographic observation of a polished section shows that main part of the meteorite contains well-formed chondrules in a coarse-grained matrix. The matrix contains no plagioclase. Chondrules sizes vary from 100 µm to 1 mm (with predominant size 200-500 µm). Metal blebs and troilite are surrounding by rare hydroxides veins (weathering grade is W1). Olivine has no undulatory extinction, indicating a shock stage of S1. Geochemistry: Mineral composition and Geochemistry: EDS analyses (Atali Agakhanov, Ksenia A. Konovalova, FMMR). Olivine 18.99±0.54 (N=27), Low-Ca pyroxene Fs17.3±0.6Wo0.78±0.19 (N=16), plagioclase Ab88.0An7.9Or3.7 (N=4). Phosphate is Cl-apatite. Composition of kamacite (in wt. %, n = 9): Fe - 90.69, Ni - 6.74, Co - 0.79. Classification: (Kseniya A. Konovalova, FMMR). Ordinary chondrite. H4, S1, W1. Specimens: Atali Agakhanov holds main mass. 21.17 g and thin section, FMMR. | ||||||||||||||||||||||||||||||||||||||
| Data from: MB110 Table 0 Line 0: |
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| Institutions and collections |
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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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| Photos: |
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Geography:
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Statistics: This is 1 of 3440 approved meteorites from Antofagasta, Chile (plus 12 unapproved names) (plus 1 impact crater) This is 1 of 3469 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||||
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| Also see: |
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| Revision history: |
This lists important revisions made to data for this record.
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