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: Fa_15.4±10.2 (Fa_0.6-33.2, n=24); Cr₂O₃ in ferroan olivine 0.03±0.02 wt%, n=40; low Ca-pyroxene: Fs_11.0±8.2Wo_0.6±0.2 (Fs_0.9-23.6Wo_0.2-1.1, 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. .