{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T09:30:15Z","timestamp":1777541415873,"version":"3.51.4"},"reference-count":88,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2022,2,21]],"date-time":"2022-02-21T00:00:00Z","timestamp":1645401600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/04683\/2020"],"award-info":[{"award-number":["UIDB\/04683\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","doi-asserted-by":"publisher","award":["UIDP\/04683\/2020"],"award-info":[{"award-number":["UIDP\/04683\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","doi-asserted-by":"publisher","award":["SFRH\/BD\/ 134109\/2017"],"award-info":[{"award-number":["SFRH\/BD\/ 134109\/2017"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Minerals"],"abstract":"<jats:p>The Douro Carboniferous Basin (DCB), aged from Gzhelian, is an important coal-bearing basin occurring in Northern Portugal. While the coals and the sedimentary sequence of the DCB have been deeply studied, the inorganic geochemical data are scarce. This study intends to provide major and trace element contents and discuss their modes of occurrence and origins using a set of twenty-four coal samples from the S\u00e3o Pedro da Cova Coalfield taken from different sectors\/outcrops. Thus, an integrated approach using petrographic, geochemical, both organic and inorganic, and mineralogical data was used to achieve these purposes. The main results demonstrated that these coals are anthracite A and vitrinite is the main organic component. Most of the elements have inorganic affinities and are associated with aluminosilicates, while the other elements have affinities with sulfides. Illite and muscovite are the main phyllosilicates occurring in these coals and pyrite is the most common sulfide. However, cinnabar, together with phosphates (fluorapatite, monazite, xenotime and gorceixite), were also identified. The enrichment of most elements as well as a heterogenous rare earth elements (REE) distribution pattern in the tectono-sedimentary unit (TSU) samples are related to magmatic fluids. On the other hand, on the Eastern Outcrop (EO), a tectonic slice, the subparallel trend of the REE distribution patterns, and a depletion of all the elements are related to the sedimentary contribution. The occurrence of cinnabar and gorceixite epigenetic mineralizations is interpreted as the action of a porphyry intrusion identified in this area of the DCB, between the TSU B1 and TSU D1.<\/jats:p>","DOI":"10.3390\/min12020275","type":"journal-article","created":{"date-parts":[[2022,2,21]],"date-time":"2022-02-21T20:47:45Z","timestamp":1645476465000},"page":"275","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Effects of Magmatic Fluids in Coals of S\u00e3o Pedro da Cova Coalfield, Douro Carboniferous Basin, Portugal: Insights from Inorganic Geochemistry"],"prefix":"10.3390","volume":"12","author":[{"given":"Mariana","family":"Costa","sequence":"first","affiliation":[{"name":"Departamento de Geoci\u00eancias, Ambiente e Ordenamento do Territ\u00f3rio, Faculdade de Ci\u00eancias da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"}]},{"given":"Helena","family":"Moura","sequence":"additional","affiliation":[{"name":"Instituto de Ci\u00eancias da Terra, Polo da Faculdade de Ci\u00eancias da Universidade do Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9451-7830","authenticated-orcid":false,"given":"Ary","family":"Pinto de Jesus","sequence":"additional","affiliation":[{"name":"Departamento de Geoci\u00eancias, Ambiente e Ordenamento do Territ\u00f3rio, Faculdade de Ci\u00eancias da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"}]},{"given":"Isabel","family":"Su\u00e1rez-Ruiz","sequence":"additional","affiliation":[{"name":"Instituto de Ciencia y Tecnolog\u00eda del Carbono (INCAR-CSIC), Francisco Pintado Fe 26, 33011 Oviedo, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4631-7831","authenticated-orcid":false,"given":"Deolinda","family":"Flores","sequence":"additional","affiliation":[{"name":"Departamento de Geoci\u00eancias, Ambiente e Ordenamento do Territ\u00f3rio, Faculdade de Ci\u00eancias da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"},{"name":"Instituto de Ci\u00eancias da Terra, Polo da Faculdade de Ci\u00eancias da Universidade do Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,21]]},"reference":[{"key":"ref_1","first-page":"187","article-title":"The structure of the intramontane Upper Carboniferous basins in Portugal","volume":"Volume 29","author":"Oliveira","year":"1983","journal-title":"The Carboniferous of Portugal"},{"key":"ref_2","unstructured":"Pires, C.C., Gomes, M.E.P., and Coke, C. 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