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| Calama 199 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Calama 199 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2020 Country: Chile Mass:  295 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 79 approved meteorites classified as CK3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 12 Feb 2022 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Calama 199 22°19’02"S, 68°41’50"W Antofagasta, Chile Find: 2020 Classification: Carbonaceous chondrite (CK3) History: The stone was found by Dario Ruiz in the Atacama desert in 2021 Physical characteristics: Black stone. Cut face reveals a dark-gray interior with mm-sized chondrules and CAIs set in an abundant brown matrix. Petrography: (J. Gattacceca, CEREGE) Chondrite with mm-sized chnodrules and mm-sized CAIs set in about 50 vol% of recrystallized matrix. Olivine is the dominant mineral. Olivine in chondrules is zoned with Fe-poor cores. Plagioclase in the matrix are up to 100 µm. Magnetite is abundant. Rare sulfides, to 2 µm, associated with magnetite. Geochemistry: Matrix olivine Fa31.9±1.3, NiO 0.31±0.13 wt% (n=5). Chondrule olivine Fa22.4±9.0, range Fa5.3-32.0, Fa PMD 36%, NiO 0.21±0.14 wt% (n=11). Ca-pyroxene Fs1.2±0.3Wo37.2±2.4 (n=3). Low-Ca pyroxene Fs4.2Wo3.2 (n=1). Plagioclase An19.7Ab74.9Or5.3 (n=1). Magnetite Cr2O3 content is 3.56±0.35 wt%. Classification: Carbonaceous chondrite (CK3). CK group based on mineralogy, texture and Cr content of magnetite. Type 3 based on the unequilibrated chondrule olivine contrasting with the recrystallized matrix that has almost equilibrated olvine and contains plagioclase, as described in Torrano et al. (2020). Specimens: Type specien at CEREGE. Main mass with Dario Ruiz. | ||||||||||||||||||||||||||||||||||||
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| Data from: MB111 Table 0 Line 0: |
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| Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) |
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| References: | Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Geography:
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Statistics: This is 1 of 2908 approved meteorites from Antofagasta, Chile (plus 10 unapproved names) (plus 1 impact crater) This is 1 of 2937 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||
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