astro-ph.EPMar 25, 2026

Connecting Meteorite Spectra to Lunar Surface Composition Using Hyperspectral Imaging and Machine Learning

Authors: Fatemeh Fazel Hesar, Mojtaba Raouf, Amirmohammad Chegeni, Peyman Soltani, Bernard Foing, Elias Chatzitheodoridis, Michiel J. A. de Dood, Fons J. Verbeek

Organizations: Leiden Institute of Advanced Computer Science, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands · ILEWG LUNEX-EuroSpaceHub EuroMoonMars Earth-Space Innovation Wassenaar, Leiden & Noordwijk, The Netherlands · Department of Space Engineering, Delft University of Technology, 2629 HS Delft, The Netherlands · Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands · Dipartimento di Fisica e Astronomia “G. Galilei”, Università di Padova, Via Marzolo 8, 35131 Padova, Italy · INFN-Padova, Via Marzolo 8, 35131 Padova, Italy · Huygens-Kamerlingh Onnes Laboratory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands · ERA Chair of Space Photonics , NSP Fotonika, Latvia University, Riga · Department of Geological Sciences, School of Mining and Metallurgical Engineering, National Technical University of Athens, Iroon Polytechniou 9, Zografou Campus, 15773 Athens, Greece

Abstract

We present an innovative, cost-effective framework integrating laboratory Hyperspectral Imaging (HSI) of the Bechar010 Lunar meteorite with ground-based lunar HSI and supervised Machine Learning(ML) to generate high-fidelity mineralogical maps. A 3mm thin section of Bechar010 was imaged under a microscope with a 30mm focal length lens at 150mm working distance, using 6x binning to increase the signal-to-noise ratio, producing a data cube (X ×\times Y ×\times λλ = 791×1024×224791 \times 1024 \times 224, 0.24mm ×\times 0.2mm resolution) across 400-1000}nm (224 bands, 2.7nm spectral sampling, 5.5nm full width at half maximum spectral resolution) using a Specim FX10 camera. Ground-based lunar HSI was captured with a Celestron 8SE telescope (3km/pixel), yielded a data cube (371×1024×224371 \times 1024 \times 224). Solar calibration was performed using a Spectralon reference ({99}% reflectance {<2}% error) ensured accurate reflectance spectra. A Support Vector Machine (SVM) with a radial basis function kernel, trained on expert-labeled spectra, achieved {93.7}% classification accuracy(5-fold cross-validation) for olivine ({92}% precision, {90}% recall) and pyroxene ({88}% precision, {86}{%} recall) in Bechar 010. LIME analysis identified key wavelengths (e.g., 485nm, {22.4}% for M3; 715nm, {20.6}% for M6) across 10 pre-selected regions (M1 to M10), indicating olivine-rich (Highland-like) and pyroxene-rich (Mare-like) compositions. SAM analysis revealed angles from 0.26 radian to 0.66 radian, linking M3 and M9 to Highlands and M6 and M10 to Mares. K-means clustering of Lunar data identified 10 mineralogical clusters ({88}% accuracy), validated against Chandrayaan-1 Moon mineralogy Mapper (M3\rm M^3) data (140m/pixel, 10nm spectral resolution).A novel push-broom HSI approach with a telescope achieves 0.8 arcsec resolution for lunar spectroscopy, inspiring full-sky multi-object spectral mapping.

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