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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:help 24.37 kg
Meteoritical Bulletin:  MB 98  (2010)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 449 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 10 Mar 2010
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:
  Table 1
  Line 18:
Date:Dec. 2007
Mass (g):24370
Fayalite (mol%):34
Ferrosilite (mol%):69
Wollastonite (mol%):4
Magnetic suscept.:2.8
Classifier:A. Jambon, O. Boudouma, D. Badia, UPVI
Type spec mass (g):31
Type spec location:UPVI
Main mass:AHabibi
Finder:Dhamen Ouled Ali
Comments:Submitted by A. Jambon
   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)
References: Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)
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     Recommended::   (22° 47' 30"N, 3° 58' 0"W)

     This is 1 of 6 approved meteorites from Gao, Mali (plus 1 unapproved name)
     This is 1 of 45 approved meteorites from Mali (plus 1 unapproved name)
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Synonymshelp: Northwest Africa 5178 (NomCom approved both names by mistake)
NWA 5178 (NomCom approved both names by mistake)

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