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| Calama 253 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Calama 253 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2019 Country: Chile Mass:  369 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 819 approved meteorites (plus 1 unapproved name) classified as L3. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 23 Jul 2022 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Calama 253 22°28.52’S, 68°51.15’W Antofagasta, Chile Find: 8 Sep 2019 Classification: Ordinary chondrite (L3) Petrography: The meteorite has chondritic texture and is comprised by chondrules, chondrule fragments and mineral grains with interstitial fine-grained (1-5 µm) matrix. The chondrules are well outlined and have an average diameter 775±515 µm (N=79). The chondrules mostly are of BO, BP, PO, POP, ROP, RP, rare CC types. Compound chondrules are present. The main phases are olivine, pyroxene, feldspatic glass, Fe,Ni iron and troilite; chromite and silica are accessory. Fe,Ni metal and troilite surround the chondrules and occur in the matrix but rare occur in the chondrules. Chondrule mesostasis is isotropic. Olivine has weak undulatory optical extinction and irregular fracturing. Geochemistry: Mineral compositions and geochemistry: Olivine Fa25.6±15.8 (N=46); PMD Fa=34.1%; Pyroxene Fs9.4±4.8 Wo1.0±1.0 (N=11) | ||||||||||||||||||||||||||||||||||||
| Data from: MB111 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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| 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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