Dolomites in hydrated fine-grained Antarctic micrometeorites: Effective tools for analyzing secondary processes

• Published in: Geochimica et Cosmochimica Acta
• Main Authors: Dobrică, E., Ohtaki, K.K., Engrand, C.
• Other Authors: Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2022
• Subjects: [PHYS]Physics [physics]; Antarctic; Ryugu; Antarc*
• Online Access: https://hal.science/hal-03572244; https://hal.science/hal-03572244/document; https://hal.science/hal-03572244/file/Dobrica_2021_soumis.pdf; https://doi.org/10.1016/j.gca.2021.11.018

International audience We report detailed transmission electron microscope (TEM) observations of carbonates from one hydrated fine-grained Antarctic micrometeorite (H-FgMM). These carbonates show the occurrence of complex chemical variations and microstructures that provide important evidence regard...