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| Mdeïné 001 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Mdeïné 001 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2021 Country: Mauritania Mass:  10.5 kg | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 273 approved meteorites classified as Mesosiderite. [show all] Search for other: Mesosiderites, Metal-rich meteorites | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 23 Jul 2022 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Mdeïné 001 21º54.1452N, 7º27.7062W Adrar, Mauritania Purchased: 2021 Classification: Mesosiderite History: A large number of samples ranging in size from 2-1121 g were found just inside the eastern border of the Adrar region of Mauritania. Adrián Contreras Gómez (CRATER meteorites) purchased the samples in Mauritania in June 2021. Physical characteristics: Samples are dark colored and irregularly shaped. The cut face, shows the interior is composed of brecciated silicates and weathered FeNi metal. Petrography: Description and classification (A. Love, App) Sample is a breccia composed of coarse-grained (avg. grain size=1626 μm, n=9), weakly zoned orthopyroxene clasts, finer-grained polycrystalline lithic fragments and rare impact melt clasts. These components are surrounded by a network of weathering veins and abundant, irregular-shaped, altered metal grains. Olivine shows developed reaction coronas. Pyroxenes in lithic fragments are exsolved. Additional minerals are: silica polymorph, troilite, chromite, phosphates (merrillite and apatite) and rare kamacite and taenite. Geochemistry: (A. Love, App) Olivine (Fa31.2-36.1, Fe/Mn=34.2-32.3, n=2); low Ca pyroxene (Fs29.5±4.5Wo3.2±0.9, Fe/Mn=25.2±3.3, n=20); pigeonite (Fs58.3Wo6.4, Fe/Mn=30.8, n=1); high Ca pyroxene (Fs26.3±7.3Wo38.8±1.3, n=3); plagioclase (An94.8±1.8Or0.1±0.1, n=6). Classification: Mesosiderite. Based on textures and mineral compositions, sample is a mesosiderite. Specimens: Adrián Contreras Gómez (CRATER meteorites) holds the 1121 g main mass. A polished thin section and 2 individuals weighing 23.62 g are on deposit at App. | ||||||||||||||||||||||||||||||||||||
| Data from: MB111 Table 0 Line 0: |
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| Institutions and collections |
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) |
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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 8 approved meteorites from Adrar, Mauritania (plus 1 impact crater) This is 1 of 221 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||||||||||
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| Revision history: |
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