Classification: Chondrite LL6 S2 / W0
Place/Time: Fall: 8 july 2023 in Boutal-fil, Chad (12°34’58.2”N 14°56’45.6”E)
Mass: +25 kg
Physical characteristics: Many individual rocks most of which partly to completely covered with pale black fusion crust. Broken surfaces display a fresh light greyish interior.
Petrography: (A. Greshake, MNB) The meteorite is an ordinary chondrite showing a thoroughly recrystallized texture with few poorly delineated relict chondrules. Main minerals are olivine, low-Ca pyroxene, and sodic plagioclase (grain size about 70 µm). More minor phases include Ca-pyroxene, Cl-apatite, troilite, and rare FeNi metal.
Geochemistry: olivine: Fa27.9±0.2 (Fa27.6-28.3, FeO/MnO=54±2, n=7); low-Ca pyroxene: Fs22.0±0.3Wo1.7±0.2 (Fs21.7-22.5Wo0.9-1.0, FeO/MnO=31±2, n=7); Ca-pyroxene: Fs8.8±0.4Wo43.0±2.3 (Fs8.6-9.7Wo37.3-44.1, FeO/MnO=22±2, n=7); feldspar: An10.2-10.7Ab83.4-85.2Or4.3-6.0, n=7
Specimens: Polandmet – Marcin Cimala holds 16 kg, Miguel Angel Contreras Gomez holds 7 kg, and Viktor Ivanov holds 670 gram.
