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Northwest Africa 12500 | |||||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12500 This is an OFFICIAL meteorite name. Abbreviation: NWA 12500 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 108.7 g | ||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 11505 approved meteorites (plus 23 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||
Comments: | Approved 18 Jan 2021 | ||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 12500 (NWA 12500) (Northwest Africa) Purchased: 2018 Classification: Ordinary chondrite (H5) History: Purchased at Hamburg Mineral Show Dec. 2018. Physical characteristics: 108.7 g dark-brown stone with metallic specks on the surface Petrography: (R. Bartoschewitz, Bart) fractured matrix with melt dykes and recrystallized melt pools, and poorly recognizable chondrule relicts. Metal and sulfide penetration into cracks blackened the meteorite. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa18.2±0.4 (range Fa17.3-19.0; n=16); pyroxene Fs15.8±0.3Wo1.7±0.2; feldspar An14-18Or2-5 (n=2); chromit CRAL=85, FFM=67 (n=1). Kamacite Ni=6.4-8.7 wt%, Co=0.6 wt% (n=5). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 5.50 Classification: Ordinary chondrite (H5, S5, W0) Specimens: 20.1 g at Kiel, Bart holds the main mass. | ||||||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013) Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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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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