A novel method for simultaneous analysis of particle size and mineralogy for Chang’E-5 lunar soil with minimum sample consumption

Cao, Kenan; Dong, Mingtan; She, Zhenbing; Xiao, Qian; Wang, Xinyi; Qian, Yuqi; Li, Yi‐Heng; Wang, Zaicong; He, Qing; Wu, Xiang; Zong, Keqing; Hu, Zhaochu; Xiao, Long

doi:10.1007/s11430-022-9966-5

Cited by 10 publications

(2 citation statements)

References 39 publications

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“…S2). examined 155 mg scooped CE-5 soil for its particle size distribution and indicated that up to 95 % of the particle sizes are <10 lm, which is the same as our results obtained by a Ramanbased particle analysis system (Cao et al, 2022) (Fig. S2a).…”

Section: Homogeneity Of the Ce-5 Lunar Soil And Ground-truth Calibrat...supporting

confidence: 87%

Bulk compositions of the Chang’E-5 lunar soil: Insights into chemical homogeneity, exotic addition, and origin of landing site basalts

Zong

Wang

et al. 2022

Geochimica et Cosmochimica Acta

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Section: Homogeneity Of the Ce-5 Lunar Soil And Ground-truth Calibrat...supporting

confidence: 87%

Bulk compositions of the Chang’E-5 lunar soil: Insights into chemical homogeneity, exotic addition, and origin of landing site basalts

Zong

Wang

et al. 2022

Geochimica et Cosmochimica Acta

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“…However, if the laser spot size (∼100 μm) exceeds the mineral grain size, the probability of exciting composited Raman spectra increases significantly. Planetary surface minerals are commonly fine‐grained (∼μm); for example, the mean size of the samples scooped by the CE‐5 mission was 3.5 μm (K. Cao et al., 2022). Additionally, a smaller laser spot diameter necessitates a higher focusing precision, which is not conducive to Raman applications in planetary missions.…”

Section: Discussionmentioning

confidence: 99%

Quantitative Mineralogy of Planetary Silicate Ternary Mixtures Using Raman Spectroscopy

Ling

Liu

et al. 2023

Earth and Space Science

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A 532‐nm‐excited lunar Raman spectrometer (LRS) has been selected as a scientific payload of the Chang'e‐7 mission, exploring mineralogy assemblages in the lunar south polar region. However, the quantification of dark‐colored silicate minerals via Raman spectroscopy is an urgent requirement for upcoming Raman applications in future lunar and planetary explorations. Therefore, we conducted detailed laboratory studies on the Raman quantification of lunar silicate minerals using ternary mixtures of feldspar, olivine, and augite. Quantitative models were established employing the observed linear relationship between Raman integrated intensities and mineral proportions. The significant correlation coefficients (>0.94) and small RMSE (≤4.20 wt.%) confirmed the performance of these models. A series of methods (multipoint sampling, multispectral averaging, peak area extraction, and spectral parameter ratios) were jointly used to ensure that the models were not significantly affected by crystal orientation, chemical inhomogeneity, and instruments. Factors (σ2/σ1) describing the relative Raman scattering cross sections were introduced to calibrate the Raman counts. Our results indicated that the relative Raman scattering efficiency of feldspar, olivine, and augite is 1.4:2.4:1, which can be used to improve the quantitative accuracy of the point‐counting method if polymineralic mixing spectra are dominant. The models were validated across different samples using laboratory mixtures and lunar soil (CE5C0600). The lithology of the Chang'e‐5 soils is basaltic/gabbroic according to the quantitative mineralogy returned from our models that is consistent with the results from traditional methods. This research will be of particular significance for accurately determining the mineral abundances for Chang'e‐7 and other planetary missions. As such, crucial information can be inferred to understand the geological evolution of the exploration regions.

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Sulfide compositions of young Chang’e-5 basalts and implications for sulfur isotopes in lunar basalt sources

Wang,

Li,

Zhang

et al. 2024

Geochimica et Cosmochimica Acta

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A novel method for simultaneous analysis of particle size and mineralogy for Chang’E-5 lunar soil with minimum sample consumption

Cited by 10 publications

References 39 publications

Bulk compositions of the Chang’E-5 lunar soil: Insights into chemical homogeneity, exotic addition, and origin of landing site basalts

Bulk compositions of the Chang’E-5 lunar soil: Insights into chemical homogeneity, exotic addition, and origin of landing site basalts

Quantitative Mineralogy of Planetary Silicate Ternary Mixtures Using Raman Spectroscopy

Sulfide compositions of young Chang’e-5 basalts and implications for sulfur isotopes in lunar basalt sources

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