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| Calama 283 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Calama 283 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2022 Country: Chile Mass:  234 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 848 approved meteorites (plus 2 unapproved names) classified as L3. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 19 Mar 2023 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
Calama 283 22°23.23’S, 68°37.27’W Antofagasta, Chile Find: 16 Nov 2022 Classification: Ordinary chondrite (L3) Petrography: The meteorite is composed of chondrules and the minor chondrule fragments and fine-grained matrix. The chondrules are well outlined. Some of them are surrounded by the troilite rims. Average chondrule diameter is 840±374 µm (N=71). The chondrules are of PO, POP, ROP, RP, granular olivine-pyroxene and granular olivine types. Barred and cryptocrystalline chondrules are rare. The chondrule mesostasis is isotropic glass. Olivine has a normal optic extinction and irregular fractures. The metal (2.3 vol.%) and troilite form well outlined grains of 100-400 µm in size. The large metal grains contain rounded troilite inclusions. At places the troilite veinlets cross the silicate grains. Geochemistry: Olivine Fa PMD =34.3%. | ||||||||||||||||||||||||||||||||||||
| Data from: MB112 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. 112, in preparation (2023)
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Geography:
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Statistics: This is 1 of 3442 approved meteorites from Antofagasta, Chile (plus 12 unapproved names) (plus 1 impact crater) This is 1 of 3471 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||
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| Also see: |
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| Revision history: |
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