| MetSoc Home Publications Contacts |
|
||
|
||
| Bir Moghrein | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Bir Moghrein This is an OFFICIAL meteorite name. Abbreviation: BiM 001 Observed fall: No Year found: 2016 Country: Mauritania Mass:  11 kg | ||||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 17 approved meteorites classified as Diogenite-olivine. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 26 Nov 2016 | ||||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 105:
Bir Moghrein 25°54.790’N, 11°59.431’W Tiris Zemmour, Mauritania Find: 2016 Apr 11 Classification: HED achondrite (Diogenite, olivine) History: (H. Chennaoui Aoudjehane) Found on 11 April 2016 by Mouloud Bachikh and his brother Bdyad during a search for meteorites in the area of Lamlawiya, close to Wad Tismar and Khang Ar Ramla, in the military zone of the Moroccan frontier with Mauritania. A few days after the first find, many hunters came to the site searching for other pieces, but only a few pieces were found after the initial discovery of the large stone. Physical characteristics: (H. Chennaoui Aoudjehane, FSAC) One big piece of ~11 kg and 10 small fragments totaling 150 g were found. The rock is coarse grained, brown-green colored, and its surface is shiny. Green olivine crystals are visible, and brownish pyroxene grains predominate, both millimeter sized. A very few clear plagioclase grains are present. Some regmaglypts were noted on the surface of the rock, which shows a very few relict patches of fusion crust. Petrography: (C. Agee, UNM) This meteorite consists of ~90% orthopyroxene, ~5% olivine, and ~2% plagioclase, and trace amounts of augite. Chromite and troilite are ubiquitous accessory phases. Heavily shocked, plagioclase has been converted to maskelynite. Geochemistry: (C. Agee, UNM) Olivine Fa23.2±0.4, Fe/Mn=51±3, n=19; low-Ca pyroxene Fs21.0±0.7Wo2.4±0.5, Fe/Mn=28±1, n=10; plagioclase An87.2±2.0, n=11. Classification: Diogenite-olivine Specimens: 18.7 and 1.3 g at FSAC, probe mount at UNM. Mouloud Bachikh holds the main mass. | ||||||||||||||||||||||||||||||||||||||||
| Data from: MB105 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||||||||||||
| Institutions and collections |
FSAC: Universite Hassan II Casablanca, Faculte des Sciences Ain Chock, Departement de Géologie, BP 5366 Maârif, Casablanca, Morocco (institutional address; updated 9 Jan 2013) UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015) |
||||||||||||||||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||||||||||||||||
| References: | Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
| ||||||||||||||||||||||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 19 approved meteorites from Tiris Zemmour, Mauritania (plus 1 impact crater) This is 1 of 191 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters) | ||||||||||||||||||||||||||||||||||||||||
| Proximity search: | |||||||||||||||||||||||||||||||||||||||||
| Synonyms: |
Bir Moghrein 001 (First meteorite in DCA) | ||||||||||||||||||||||||||||||||||||||||