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| Sierra Gorda 028 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Sierra Gorda 028 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2019 Country: Chile Mass:  16 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 9 approved meteorites classified as H/L5. [show all] Search for other: H chondrites, H chondrites (type 4-7), H/L chondrites, H/L chondrites (type 4-7), L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 21 Mar 2020 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 109:
Sierra Gorda 028 22°30.09’S, 69°2.44’W Antofagasta, Chile Find: 25 Mar 2019 Classification: Ordinary chondrite (H/L5) Petrography: (Lorenz C.A., Vernad) The meteorite has chondritic texture and is composed of chondrule fragments, minor poorly lineated chondrules, and metal and troilite grains, set in minor recrystallized granular matrix. Modal abundance of metal is 4 vol%, troilite 3 vol%. Silicate grains often have finest troilite network. Olivine has undulatory and mosaic extinction, irregular and planar fractures and planar deformation features. Feldspar is partly isotropic. Chromite-feldspar objects were found. The meteorite is rich in troilite- and metal-troilite veinlets and aggregates. Silicate glass-troilite-metal melt pockets and melt veins are present. Classification: The meteorite is classified as H/L5 chondrite based on pyroxene composition between that of H and L groups | ||||||||||||||||||||||||||||||||||||
| Data from: MB109 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. 109, in preparation (2020)
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| Photos: |
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Geography:
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Statistics: This is 1 of 3160 approved meteorites from Antofagasta, Chile (plus 11 unapproved names) (plus 1 impact crater) This is 1 of 3189 approved meteorites from Chile (plus 14 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||
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