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Northwest Africa 12589 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12589 This is an OFFICIAL meteorite name. Abbreviation: NWA 12589 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 327 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 99 approved meteorites classified as LL7. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 11 May 2019 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12589 (NWA 12589) (Northwest Africa) Purchased: 2018 Oct Classification: Ordinary chondrite (LL7) Petrography: (K. Metzler, IfP) Brecciated ordinary chondrite with chondritic lithic clasts up to 7 mm. Clasts are recrystallized and contain chondrule relicts. Many secondary feldspar grains with sizes of 100 µm and larger. Rare (oxidized) metal with a maximum size of 1 mm. Geochemistry: Mineral compositions and geochemistry: (K. Metzler, IfP) The mean olivine composition is Fa31.1±0.3 (30.2-31.5; n=14). The mean low-Ca pyroxene composition is Fs25.2±0.3 Wo2.9±0.5 (Fs24.5-25.6 Wo2.1-3.8; n=17). Classification: LL chondrite based on mineral chemistry. Petrologic type 7 based on the equilibrated state of olivine and pyroxene, the large grain size of secondary plagioclase, and the high CaO concentration in low-Ca pyroxene. | ||||||||||||||||||||||||||||||
Data from: MB108 Table 0 Line 0: |
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Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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