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Taoussat-n-Amouzzour 001
Basic information Name: Taoussat-n-Amouzzour 001
     This is an OFFICIAL meteorite name.
Abbreviation: TnA 001
Observed fall: No, but it is possible
Year found: 2022
Country: Niger
Mass:help 22.5 kg
Meteoritical Bulletin:  MB 112  (2023)  L3
Recommended:  L3    [explanation]

This is 1 of 851 approved meteorites (plus 2 unapproved names) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 30 Jul 2023
Writeup from MB 112:

Taoussat-n-Amouzzour 001 (TnA 001)        17.27508, 8.37378

Agadez, Niger

Find, possible fall: 2022 Dec 15

Classification: Ordinary chondrite (L3)

History: On December 15, 2022, at around 7 p.m. local people at wadi Amdriga and the village of Tafragah, Niger observed a fireball east of Arlit. Several days later, many fresh, partially to completely crusted stones were found together by shepherds near a dry river bed west of Massif de Taghouaji at 17°16’30.288"N, 8°22’25.606"E. In March, 2023 Marcin Cimala purchased 5250 g and Ziyao Wang 1133 g of the material.

Physical characteristics: All rocks show a fresh grayish interior with recognizable chondrules and are partly to completely covered with black fusion crust.

Petrography: The meteorite shows a chondritic texture with well-defined, mostly rounded, and packed chondrules (mean diameter: 586±290 µm, n=97) in a fine-grained dark grayish matrix that contains sulfides and FeNi metal.

Geochemistry: olivine: Fa15.4±10.2 (Fa0.6-33.2, n=24); Cr2O3 in ferroan olivine 0.03±0.02 wt%, n=40; low Ca-pyroxene: Fs11.0±8.2Wo0.6±0.2 (Fs0.9-23.6Wo0.2-1.1, n=24).

Classification: Ordinary chondrite (L3). L chondrite class is consistent with the measured magnetic susceptibility. Chromium contents in ferroan olivine indicate a subtype ~3.2.

Specimens: 42 g including one polished thin section at MNB; 9.9 g including one polished thin section at UWB; Polandmet - Marcin Cimala holds a total of 5250 g including a single 3245 g oriented specimen with fresh black fusion crust showing regmaglypts, flow lines, rollover rims, and bubbles; smaller fragments are partially covered with fusion crust. WangZ has three broken partially crusted stones with a combined weight of 1133 grams. Ryan Munro owns several pieces totaling 2334.7 g. Remainder held by an anonymous finder. .

Data from:
  Table 0
  Line 0:
Date:2022 Dec 15
Mass (g):22500
Shock stage:S1
Weathering grade:W0/1
Fayalite (mol%):15.4±10.2
Ferrosilite (mol%):11.0±8.2
Wollastonite (mol%):0.6±0.2
Magnetic suscept.:4.65
Classifier:A. Greshake, MNB
Type spec mass (g):51.9
Type spec location:MNB/UWB
Main mass:anonymous
Comments:Work names MC-2023BE and WZY-157; submitted by Ansgar Greshake
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Polandmet: targoniny 30 43445 Dziegielow Poland, Poland; Website (institutional address; updated 7 May 2021)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Fujun Ren         
Woreczko Jan & Wadi      
Ziyao Wang                  

     Recommended::   (17° 16' 30"N, 8° 22' 26"E)

     This is 1 of 54 approved meteorites from Agadez, Niger
     This is 1 of 120 approved meteorites from Niger (plus 4 unapproved names)
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