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| Sierra Gorda 060 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Sierra Gorda 060 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2021 Country: Chile Mass:  7.7 kg | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 710 approved meteorites (plus 2 unapproved names) classified as H3. [show all] Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 17 Apr 2022 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Sierra Gorda 060 22°30.02’S, 69°2.63’W Antofagasta, Chile Find: 15 Mar 2021 Classification: Ordinary chondrite (H3) Petrography: The meteorite has chondritic texture and is composed of chondrules (av. diameter 640 um), chondrule fragments, and mineral grains with interstitial, fine-grained, clastic matrix. The main phases are olivine, pyroxene, feldspatic glass, Fe,Ni iron and troilite; chromite and Ca-phosphate are accessory. The chondrules are of the BO, PO, PP, CC, BP, POP, RP types. Chondrule mesostasis is isotropic. Olivine has undulatory optical extinction and irregular fracturing. Local melt pockets and discontinuous melt veins were observed. Bulk Fe,Ni metal abundance is 4.6 vol.%, which is intermediate between the metal content of H and L chondrites (7.80±0.62 vol%, n=25, and 3.54±0.34 vol%, n=53, respectively, from Gattacceca et al., 2014). Geochemistry: Olivine: Fa20.2±4.3 (N=17), PMD Fa = 14.6%; pyroxene Fs12.9±5.9Wo1.0±0.5 (N=16); kamacite (Borisovsky S. E., EPMA, IGEM, all in wt.%): Ni=6.02±0.34; Co=0.52±0.04 (N=6). Classification: Ordinary chondrite, H3. The metal content, and metal composition are intermediate between H and L groups, and chondrules are larger than in typical H3 chondrites. | ||||||||||||||||||||||||||||||||||||
| Bibliography: |
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| 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) IGEM: Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetny Per., 35, Moscow, 119017 , Russia (institutional address; updated 16 Dec 2010) |
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| Catalogs: |
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| References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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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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