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| Calama 005 | |||||||||||||||||||||||||||||||||||
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| Basic information | Name: Calama 005 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2017 Country: Chile Mass:  380 g | ||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||||||
| Comments: | Approved 17 Jan 2018 | ||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 107:
Calama 005 22°23.56’S, 68°38.61’W Antofagasta, Chile Find: 25 March 2017 Classification: Carbonaceous chondrite (CO3) Physical characteristics: 1 individual sample, 380 g, broken in several pieces, brown-black and covered with brown fusion crust. Petrography (M. A. Ivanova, Vernad): meteorite consists of fine-grained matrix material, chondrules of Type I and II, and refractory inclusions. Average diameter of chondrules is 0.2 mm. Chondrules consist of olivine, pyroxene and plagioclase mesostasis. The minor phases are spinel, melilite, chromite, sulfides, kamacite, taenite, and tetrataenite. Geochemistry: Mineral compositions and geochemistry (M. A. Ivanova, Vernad): Olivine (EMPA) is Fa22.2±18.4 (N=98) mol%, CaO 0.24±0.16 ; MnO 0.23±0.13 (both wt. %), pyroxene is presented by orthopyroxene (Fs11.6±10.8Wo1.8±1.4 (N=20)), augite (Fs4.5Wo41.9En53.5), diopside (Fs1.4Wo50.7), and Al-diopside (Fs4.3Wo51.7), Al2O3 16.3 wt%, TiO2 2.9 wt%. Mesostasis in chondrules is (wt%): SiO2 50.4; TiO2 0.42; Al2O3 22.8; Cr2O3 0.19; FeO 3.6; MnO 0.14; MgO 2.80; CaO 14.6; Na2O 2.95; K2O 0.19. Classification (M. A. Ivanova, Vernad): Based on the texture, average chondrules size, mineralogy, and mineral chemistry the meteorite is a carbonaceous chondrite of CO3 type. The meteorite shows only minor weathering features. Specimens: 1 piece (70 g) and a thin section are deposited in Vernad. The main mass with Mr. Timur Kryachko and Mt. Eugeniy Zakharchuk. | ||||||||||||||||||||||||||||||||||
| Data from: MB107 Table 0 Line 0: |
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| Institutions and collections |
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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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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