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Carbonates in Ryugu and Bennu with MicrOmega: Insights into Aqueous Alteration on Primitive Asteroids

  • Authors: Max Mahlke, Cateline Lantz, Cédric Pilorget, Donia Baklouti, Rosario Brunetto, Kentaro Hatakeda, Te Jiang, Damien Loizeau, Rachel Sheppard, Alice Aléon-Toppani, Masanao Abe, Jean-Pierre Bibring, Yuma Enokido, Ryota Fukai, Vincent Hamm, Yuya Hitomi, Seiya Kawasaki, Tania Le Pivert-Jolivet, Akiko Miyazaki, Kana Nagashima, Arisa Nakano, Aiko Nakato, Laura Nardelli, Masahiro Nishimura, Tomoko Ojima, Tatsuaki Okada, François Poulet, Lucie Riu, Ryosuke Sakurai, Rui Tahara, Tomohiro Usui, Toru Yada, Kasumi Yogata, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Seiichiro Watanabe, Makoto Yoshikawa, Yuichi Tsuda

Max Mahlke et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 6.

Median spectra of carbonate ROIs in Ryugu (chambers A and C separately) and Bennu for four different carbonate compositions. The number in parentheses gives the number of averaged ROIs per spectrum. The left side shows the full spectra, the right side focuses on the 2.7 µm (normalized at 2.55 µm) and 3.4 µm (continuum-removed, scaled to uniform band depth) absorptions. Vertical dotted lines at 2.72 µm and 2.85 µm indicate typical band minima of Mg- and Fe-rich phyllosilicates, respectively.

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