{
  "abstract": "Vanadium(V) is considered a critical metal due to its increasing use in low-carbon energy technologies, particularly V redox-flow batteries. Black shale-hosted deposits represent an important unconventional V resource, where enrichment is closely linked to depositional redox conditions, organic matter accumulation, and postdepositional processes. This study investigates Lower-Middle Carboniferous black shales from the Çavuşlar-Kırtıl (Mersin) regions in the Central Taurus Belt of Türkiye, which represent a notable occurrence of V enrichment. Using an integrated geochemical and mineralogical approach, this study constrains V sources, reconstructs paleo-redox conditions, determines host phases, and identifies the key controls on V enrichment. The studied black shales are composed mainly of quartz, calcite, feldspar, and Illite-dominated clay minerals, representing mixed mudstone lithofacies. TOC contents range from 1.72 to 2.79 wt %, whereas V concentrations vary between 411 and 615 ppm. EFs indicate moderate-strong enrichment of redox-sensitive elements (V–Mo–U). Multiple reliable paleoredox proxies (UEF, MoEF, VEF, and NiEF, Fe/Al, Th/U, and Corg/P) consistently indicate deposition under predominantly suboxic to anoxic conditions with intermittent euxinic episodes. Trace element source assessment based on Fe/Ti, Al/(Al+Fe), Eu/Eu*, and elemental relationships indicates predominantly nonhydrothermal and authigenic signatures, supporting a trustworthy interpretation of the paleodepositional environment. EPMA and SEM–EDS analyses reveal that V is heterogeneously distributed within the shale matrix and associated with both organic matter and illitic clay minerals. Positive TOC-redox-sensitive element correlations suggest that organic matter might be the control on V enrichment, while measurable V in Illite indicates partial diagenetic redistribution into clay minerals under oxygen-deficient conditions. Overall, the results provide new insights into shale-hosted V enrichment mechanisms and their regional metallogenic significance.",
  "abstract_shown": true,
  "affiliations": [
    "Istanbul Technical University , , Ayazaga Campus, Maslak , ,"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Naside Merve Sutcu",
      "orcid": "0000-0002-8491-5739"
    },
    {
      "affs": [
        0
      ],
      "name": "Zeynep Doner",
      "orcid": "0000-0003-2928-3174"
    },
    {
      "affs": [
        0
      ],
      "name": "Mustafa Kumral"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a6wqtcm9yrfqj.bib",
  "cited_by": 0,
  "doi": "10.1021/acsomega.6c09274",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13737959/",
  "id": "a6wqtcm9yrfqj",
  "issns": [
    "2470-1343"
  ],
  "landing_url": "https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09274/5455092/Vanadium-Occurrence-and-Enrichment-Mechanisms-in",
  "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": [
    [
      "heading",
      "Article"
    ],
    [
      "openalex",
      "1906|Geochemistry and Elemental Analysis"
    ]
  ],
  "openalex": "W7223146338",
  "pdf_url": "https://pubs.acs.org/doi/pdf/10.1021/acsomega.6c09274",
  "pmcid": "PMC13737959",
  "pmid": "42992063",
  "published": "2026-10-21",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/a6wqtcm9yrfqj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:39Z",
      "native_id": "10.1021/acsomega.6c09274",
      "source": "crossref",
      "url": "https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09274/5455092/Vanadium-Occurrence-and-Enrichment-Mechanisms-in"
    },
    {
      "first_seen": "2026-11-09T12:23:02Z",
      "native_id": "PMC13737959",
      "source": "pmc",
      "url": "https://doi.org/10.1021/acsomega.6c09274"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:1906|Geochemistry and Elemental Analysis",
      "subfield": "geology-geochemistry"
    }
  ],
  "title": "Vanadium Occurrence and Enrichment Mechanisms in Lower-Middle Carboniferous Black Shales of the Central Taurus Belt, Türkiye: Insights into Critical Element Potential",
  "title_text": "Vanadium Occurrence and Enrichment Mechanisms in Lower-Middle Carboniferous Black Shales of the Central Taurus Belt, Türkiye: Insights into Critical Element Potential",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T12:23:02Z",
  "url": "https://research.draconitic.com/paper/a6wqtcm9yrfqj",
  "venue": "ACS Omega",
  "versions": []
}