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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: ![]() | ||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 130 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:![]() |
Statistics: This is 1 of 20 approved meteorites from Tiris Zemmour, Mauritania (plus 1 impact crater) This is 1 of 200 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||||||||||
Proximity search: |