- Names
-
- Z. Dionnet
- A. Aléon-Toppani
- R. Brunetto
- S. Rubino
- M. D. Suttle
- C. Lantz
- C. Avdellidou
- D. Baklouti
- F. Borondics
- Z. Djouadi
- F. Grieco
- E. Héripré
- T. Nakamura
- A. Rotundi
- M. Scheel
- Title
- Multiscale correlated analysis of the Aguas Zarcas CM chondrite
- Abstract
- In this paper, we report the results of a campaign of measurements on four fragments of the CM Aguas Zarcas (AZ) meteorite, combining X-ray computed tomography analysis and Fourier-transform infrared (FT-IR) spectroscopy. We estimated a petrologic type for our sampled CM lithology using the two independent techniques, and obtained a type CM2.5, in agreement with previous estimations. By comparing the Si-O 10-μm signature of the AZ average FT-IR spectra with other well-studied CMs, we place AZ in the context of aqueous alteration of CM parent bodies. Morphological characterization reveals that AZ has heterogeneous distribution of pores and a global porosity of 4.5 +/- 0.5 vol%. We show that chondrules have a porosity of 6.3 +/- 1 vol%. This larger porosity could be inherited due to various processes such as temperature variation during the chondrule formation and shocks or dissolution during aqueous alteration. Finally, we observed a correlation between 3D distributions of organic matter and mineral at micrometric scales, revealing a link between the abundance of organic matter and the presence of hydrated minerals. This supports the idea that aqueous alteration in AZ’s parent body played a major role in the evolution of the organic matter.
- Keywords
- Aguas Zarcas, spectroscopy, meteorites, experimental techniques
- Content
- spectral data, planetary sciences, spectral data use
- Year
- 2022
- Journal
- Meteoritics and Planetary Science
- Volume
- 57
- Number
- 5
- Pages
- 965 - 988
- Pages number
- 24
- Document type
- article
- Publication state
- published
- Doi
- 10.1111/maps.13807
- Identifiers
- Experiment/Spectra
-
- Average reflectance spectrum of a fragment of Murray chondrite (CM2) in the MIR range
- Average reflectance spectrum of a fragment of Murchison chondrite (CM2) in the MIR range
- Average reflectance spectrum of a fragment of Aguas Zarcas chondrite (CM2) in the MIR range
- Average reflectance spectrum of a fragment of Orgueil chondrite (CI) in the MIR range
- Average reflectance spectrum of a fragment of Y-79332 chondrite (CM2) in the MIR range
- Average reflectance spectrum of a fragment of B-7904 chondrite (C2) in the MIR range
- Average reflectance spectrum of a fragment of Jbilet Winselwan chondrite (CM2) in the MIR range
- Average reflectance spectrum of a pellet of the MET01070 chondrite (CM1) in the MIR range
- Average reflectance spectrum of a pellet of the QUE97990 chondrite (CM2) in the MIR range
- Average reflectance spectrum of a pellet of the EET92159 chondrite (CR2) in the MIR range