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Stewart Valley 024 | |||||||||||||||||||||||||||||||||||||||
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Basic information | Name: Stewart Valley 024 This is an OFFICIAL meteorite name. Abbreviation: StV 024 Observed fall: No Year found: 2017 Country: United States Mass: 158.2 g | ||||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 709 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 20 Jul 2018 | ||||||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Stewart Valley 024 (StV 024) 36°14.991’N, 116°10.319’W Nevada, USA Find: 2017 Jan 07 Classification: Ordinary chondrite (H3) Petrography: Chondrules are very sharply defined, but none appear to contain isotropic glassy mesostases, suggesting a high type-3 classification. Chondrule types include, PO, PP, POP, BO, RP and C. Olivine grains exhibit sharp optical extinction, indicative of shock stage S1. However, some of the troilite grains are polycrystalline, suggesting the rock was shocked and then annealed. Consistent with this is the occurrence of small irregular troilite grains within some grains of metallic Fe-Ni, probably a feature formed by localized shock melting. There are no observable crystalline plagioclase grains. More than 95% of the metal and troilite grains have been transformed into limonite and goethite by terrestrial weathering. | ||||||||||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Photos: |
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Geography: |
Statistics: This is 1 of 184 approved meteorites from Nevada, United States (plus 4 unapproved names) This is 1 of 1925 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters) | ||||||||||||||||||||||||||||||||||||||
Proximity search: | |||||||||||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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