{
  "abstract": "Accurate localization of rare high-Mg minerals in lunar soil is hindered by their small grain size and occurrence in compositionally heterogeneous matrices. High-Mg minerals are operationally defined as olivine with Fo > 80 (Fo = 100 × Mg/(Mg + FeT) molar basis), orthopyroxene with Mg# > 80 (Mg# = 100 × Mg/(Mg + FeT) molar basis), and clinopyroxene with Mg# > 70. A particle-resolved scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) screening method was developed for Chang’e-6 lunar soil. The key advance is that Mg-bearing particles are not only identified by phase mapping but are further classified according to Mg# for pyroxene and Fo for olivine, enabling high-Mg candidates to be directly ranked and spatially located across large mapped areas. Analytical conditions were optimized using Monte Carlo simulations, counting-statistics requirements, particle-size constraints, and phase-segmentation performance. The final conditions were 15 kV, 10 nA, a dwell time of 2000 μs, a resolution of 1024 pixels, frame processing of 4, a boundary tolerance of 10, and a grouping level of 0. Quantitative SEM-EDS results agreed well with electron-probe microanalysis (EPMA) analyses of the same grains. Application of the method showed that Mg-bearing phases accounted for approximately 1.8% of the mapped compositional area and enabled rapid localization of high-Mg olivine and pyroxene grains for subsequent high-precision analyses. The workflow provides a practical basis for selecting high-Mg candidates for subsequent studies of lunar mantle provenance and Lunar Magma Ocean differentiation.",
  "abstract_shown": true,
  "affiliations": [
    "Institute of Geology and Geophysics, Chinese Academy of Sciences , , ,",
    "University of Chinese Academy of Sciences , , ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jiangyan Yuan",
      "orcid": "0000-0002-1845-7565"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Kaihui Shi"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yi Chen"
    },
    {
      "affs": [
        0
      ],
      "name": "Di Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Lihui Jia"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1hprcxtrt78y6.bib",
  "cited_by": 0,
  "doi": "10.1021/acsomega.6c09206",
  "fulltext_url": "https://doi.org/10.1021/acsomega.6c09206",
  "id": "1hprcxtrt78y6",
  "issns": [
    "2470-1343"
  ],
  "landing_url": "https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09206/5453393/A-Validated-SEM-EDS-Workflow-for-Screening-Rare",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "QD1-999"
    ],
    [
      "openalex",
      "2508|Electron and X-Ray Spectroscopy Techniques"
    ]
  ],
  "openalex": "W7222926236",
  "pdf_url": "https://pubs.acs.org/doi/pdf/10.1021/acsomega.6c09206",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/1hprcxtrt78y6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:39Z",
      "native_id": "10.1021/acsomega.6c09206",
      "source": "crossref",
      "url": "https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09206/5453393/A-Validated-SEM-EDS-Workflow-for-Screening-Rare"
    },
    {
      "first_seen": "2026-11-04T14:20:38Z",
      "native_id": "156f1966ced144ebaeb893dfb240d02a",
      "source": "doaj",
      "url": "https://doi.org/10.1021/acsomega.6c09206"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2508|Electron and X-Ray Spectroscopy Techniques",
      "subfield": "materials-polymers"
    }
  ],
  "title": "A Validated SEM-EDS Workflow for Screening Rare High-Mg Minerals in Fine-Grained Chang’e-6 Lunar Soil",
  "title_text": "A Validated SEM-EDS Workflow for Screening Rare High-Mg Minerals in Fine-Grained Chang’e-6 Lunar Soil",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T14:20:34Z",
  "url": "https://research.draconitic.com/paper/1hprcxtrt78y6",
  "venue": "ACS Omega",
  "versions": []
}