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| El Hassan Ould Hamed 001 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: El Hassan Ould Hamed 001 This is an OFFICIAL meteorite name. Abbreviation: EHOH 001 Observed fall: No Year found: 2019 Country: Mauritania Mass:  12.16 kg | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 144 approved meteorites classified as Eucrite-unbr. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 18 Jul 2020 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 109:
El Hassan Ould Hamed 001 (EHOH 001) 25.229°N, 08.624°W Tiris Zemmour, Mauritania Find: 2019 Dec Classification: HED achondrite (Eucrite, unbrecciated) History: Found in December 2019 at a site NE of Imourene, Mauritania, and purchased a few weeks later by Mohamed Brahim Sueilem and Naji Ben Faraji from a dealer in Tindouf, Algeria. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Fresh protogranular gabbroic assemblage (grainsize up to 3.4 mm) of predominantly exsolved pigeonite and calcic plagioclase, together with accessory silica polymorph, Ti-Al-chromite, ilmenite, baddeleyite, zircon and troilite. Host low-Ca pyroxene in pyroxene grains exhibits distinctive polysynthetic twinning. Chromite and ilmenite grains occur mainly as inclusions within pyroxenes. Geochemistry: Low-Ca pyroxene host (Fs57.2-59.0Wo5.3-4.1, FeO/MnO = 29-33, N = 4), augite exsolution lamellae (Fs26.6-27.1Wo42.5-43.4, FeO/MnO = 29-31, N = 4), plagioclase (An89.2-90.7Or0.4-0.3, N = 3). Oxygen isotopes (K. Ziegler, UNM): analyses of acid-washed subsamples by laser fluorination gave, respectively, δ17O 1.652, 1.812, 1.789; δ18O 3.676, 3.963, 3.944; Δ17O -0.289, -0.280, -0.293 per mil. Classification: Eucrite (unbrecciated, gabbroic, protogranular). Specimens: 20.3 g including one polished thin section at UWB; remainder with Mr. N. Ben Faraji. | ||||||||||||||||||||||||||||||||||||
| Data from: MB109 Table 0 Line 0: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||||||||
| Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) |
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| Catalogs: |
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| References: | Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.
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Geography:
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Statistics: This is 1 of 33 approved meteorites from Tiris Zemmour, Mauritania (plus 1 impact crater) This is 1 of 232 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||||||||||
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