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| Taoudenni | |||||||||||||||||||||||||||||||||||
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| Basic information | Name: Taoudenni This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2007 Country: Mali Mass:  24.37 kg | ||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 522 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||||||||
| Comments: | Approved 10 Mar 2010 | ||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB online:
Taoudenni 22°47.5’N, 3°58.0’W Gao, Mali Found: Dec. 2007 Classification: HED achondrite (Diogenite) History: A Moroccan meteorite hunter (Dhamen Ouled Ali) looking for pieces of the Erg Chech fall (Chergach) found this 23 kg single stone by chance, 15 km north of the Taoudenni salines. Physical characteristics: One single 24,370 g stone, with patches of fusion crust (5 to 10 % approximately). log χ = 2.8. Petrography: A. Jambon, O. Boudouma, D. Badia, UPVI, studied one polished section by EMPA and SEM. The meteorite has a cumulate texture, dominantly orthopyroxene, with minor amounts of poikilitally enclosed olivine and chromite/pyrrhotite and interstitial plagioclase and chromite. Rare silica and kamacite (mostly weathered) occur. A few clusters of subhedral olivine are irregularly distributed (according to photographs of the whole stone). Mode from a BSE image on a polished section of about 2 cm2: orthopyroxene = 87%, olivine = 7%, chromite = 1.6%, plagioclase = 3%. Geochemistry: Mineral compositions and geochemistry: Abundant low-Ca pyroxene : En69Fs26Wo4; Cr2O3 = 0.7%; FeO/MnO = 31. Olivine Fa34; Cr2O3 = 0.03%, CaO = 0.08 %; FeO/MnO = 51. Minor high-Ca pyroxene: En45Fs13Wo42. Plagioclase An87Ab12Or1. Chromite: Mg# = 0.24; Cr/(Cr+Al) = 0.69. Kamacite has Ni = 12%. Classification: Diogenite. Weathering: moderate. No shock features. Specimens: Type specimens: A specimen of 31 g and one polished section are on deposit at UPVI. A. Habibi (Erfoud) holds the main mass. | ||||||||||||||||||||||||||||||||||
| Data from: MB98 Table 1 Line 18: |
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| Institutions and collections |
UPVI: Université Pierre et Marie Curie (Paris VI),Case 110, 4 Place Jussieu, 75005 Paris, France (institutional address; updated 5 Oct 2014) AHabibi: Palms Hotel Club, Erfoud 52200, Morocco (private address; updated 3 Jan 2010) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)
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| Photos: |
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Geography:
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Statistics: This is 1 of 32 approved meteorites from Gao, Mali (plus 1 unapproved name) This is 1 of 116 approved meteorites from Mali (plus 2 unapproved names) | ||||||||||||||||||||||||||||||||||
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| Synonyms: |
Northwest Africa 5178 (NomCom approved both names by mistake) NWA 5178 (NomCom approved both names by mistake) Taoudenni 001 (First meteorite in DCA) | ||||||||||||||||||||||||||||||||||
| Revision history: |
This lists important revisions made to data for this record.
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