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Taoudenni 002
Basic information Name: Taoudenni 002
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Mali
Mass:help 14.51 kg
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 260 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 6 May 2021
Writeuphelp
Writeup from MB 110:

Taoudenni 002        22.9833, -3.4333

Gao, Mali

Find: 2021

Classification: Martian meteorite (Shergottite)

History: Found by a team of meteorite hunters just northeast of Taoudenni, Mali. A deal was brokered between the finders and Darryl Pitt with a Mauritanian meteorite and desert truffle hunter as the intermediary.

Physical characteristics: This single boulder-like, smooth-contoured mass features a sweeping parabolic face truncated by a strikingly flat perpendicular surface. Fusion crust is absent on this abstract ventifact form; a gently-rippled surface texture is rendered in variegated earth tones under a pale green hue with ochre accents. A desert varnish covers the smooth stippling which has been determined to be the grains of pyroxene, olivine and maskelynite of which this mass is primarily comprised. A clear demarcation indicates the portions of the mass which rested above and below ground. Saw cut and broken surface reveal a medium-grained mixture of light gray, light green, and orange grains.

Petrography: (C. Agee, UNM) This meteorite has the approximate modal abundances: 50% pyroxene, 25% olivine, 20% maskelynite, with accessory ilmenite, chromite, titanomagnetite, and troilite. Pyroxenes are igneously zoned with pigeonitic cores and augitic rims. Phenocrystic pyroxene grains often form cumulate masses up to several mm. Phenocrystic olivines are typically less than 1mm and have mild zoning profiles. Maskelynite is found primarily as acicular laths with typical dimensions of 0.1 × 1 mm.

Geochemistry: (C. Agee, UNM) Olivine Fa45.9±9.3, Fe/Mn=54±2, CaO=0.17±0.06, NiO=0.05±0.01 (wt%), n=5; pyroxene Fs30.5±7.4Wo15.6±10.9, Fe/Mn=30±2, n=20; maskelynite An51.2±1.7Ab46.3±0.9Or2.5±0.8, n=6.

Classification: Martian shergottite (olivine-pyroxene phyric basalt)

Specimens: 22.26 g on deposit at UNM, Darryl Pitt holds the main mass.

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Gao
Place of purchase:Mauritania
Date:2021
Latitude:22.9833
Longitude:-3.4333
Mass (g):14507
Pieces:1
Class:Martian (shergottite)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):45.9±9.3
Ferrosilite (mol%):30.5±7.4
Wollastonite (mol%):15.6±10.9
Classifier:C. Agee, UNM
Type spec mass (g):22.26
Type spec location:UNM
Main mass:DPitt
Comments:Submitted by C. Agee
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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography:

Mali
Coordinates:
     Recommended::   (22° 59'N, 3° 26'W)

Statistics:
     This is 1 of 9 approved meteorites from Gao, Mali (plus 1 unapproved name)
     This is 1 of 51 approved meteorites from Mali (plus 1 unapproved name)
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