Northeast Africa 037 (NEA 037)
Classification: HED achondrite (Eucrite, unbrecciated)
History: Found in Libya in 2021.
Physical characteristics: Crusted stone. Cut surface reveals a fine-grained light-gray interior.
Petrography: (J. Gattacceca, CEREGE) Unbrecciated igneous rock with granoblastic texture. Main minerals are pyroxene (mostly low-Ca pyroxene) and plagioclase in similar abundance and typical grainsize 1.2 mm. Low-Ca pyroxene has Ca-pyroxene exsolutions. Accessory chromite, ilmenite, troilite, silica polymorph. No metal was observed.
Geochemistry: Low-Ca pyroxene Fs57.9±0.9Wo6.2±0.9, FeO/MnO = 34.3±2.7 (n=6). Ca-pyroxene Fs29.6±0.8Wo40.3±0.8, FeO/MnO = 30.6±6.1 (n=4). Plagioclase An88.1±0.6Ab11.3±0.6Or0.6±0.1 (n=7).
Specimens: Type specimen at CEREGE. Main mass with Isabelle Pothier.
Mass (g): 614
Pieces: 9
Classifier: J. Gattacceca, CEREGE
Main mass: Isabelle Pothier
