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| Calama 079 | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Calama 079 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2017 Country: Chile Mass:  44.3 g | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 6459 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 23 Feb 2020 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 109:
Calama 079 22°24.362 S, 68°34.391 W Antofagasta, Chile Find: 2017 Oct 14 Classification: Ordinary chondrite (H4) History: One fragment weighing 44.34 g was found 14 October 2017 by the UrFU meteorite expedition-2017 in Chile (Pastukhovich A.Yu., Larionov M.Yu., Kruglikov N.A., Kolunin R.N.) near Chiu-Chiu. Physical characteristics: The meteorite has roughly rounded shape. Exterior of the stone is desert polished. The surface and interior of the meteorite is light to dark brown in color due to Fe-hydroxides. No fusion crust was observed. Petrography: Classification (K. Dugushkina and S. Berzin, RAS-UB). The meteorite consists mainly of a fine-grained inequigranular recrystallized matrix; chondrules make up 25-30% of the volume. Predominantly porphyritic olivine (PO) and porphyritic olivine-pyroxene (POP) chondrules. Chondrules mostly have even boundaries. The meteorite consists mainly of olivine 55%, low-Ca pyroxene 20%, Ca pyroxene 10%, plagioclase 10%, troilite 2-3%, Fe-Ni-metal 2-3%. Also chondrite contains accessory apatite, chromite and ilmenite. Heavy oxidation of metal and troilite, 60-95% being replaced (W3). Shock stage is S3. Geochemistry: EDX analyses by K. Dugushkina, RAS-UB. Olivine Fa20.3±0.6 (N=16), orthopyroxene Fs17.8±0.8Wo1.2±0.2 (N=14), clinopyroxene En43±1.5Fs20±2.8Wo46±0.5, plagioclase An37±0.14 (N=9), chromite, apatite, troilite and FeNi-metal. Classification: H4, ordinary chondrite. Specimens: 29.54 g sample and 14.8 g cut-off and thin section, UrFU | ||||||||||||||||||||||||||||||||||||||
| Data from: MB109 Table 0 Line 0: |
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| Institutions and collections |
UrFU: Ural Federal University, 620002, 19 Mira street, Ekaterinburg, Russia (institutional address; updated 14 Jan 2015) RAS-UB: Zavaritsky Institute of Geology and Geochemistry Russian Academy of Sciences, Ural Branch 15 Akademika Vonsovskogo str., Ekaterinburg, 620016, Russia (institutional address; updated 19 Apr 2018) |
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| Catalogs: |
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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 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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