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Lunar Geochemistry from X-Ray Line Flux Ratios Using CLASS on Chandrayaan-2

  • Authors: R. Kumar, Y. Rai, S. Srijan, A. Bansal, Ameya V. Singh, A. Kumar, H. Mhatre, M. Goyal, S. Swain, S. Patidar, Aditya P. Saikia, A. Ahmad, S. Narendranath, Netra S. Pillai, R. Kashyap, V. Bhalerao

R. Kumar et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 5.

Lunar XRF line-intensity ratio maps of O/Si and Ca-Kα/Si from CLASS data binned at 296 s. Black lines are mare boundaries from LROC data. Oxygen is not expected to vary much across the lunar surface, which is indeed observed in the O/Si map. On the other hand, the expected differences in terranes are not observed in the Ca-Kα/Si map.

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