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Crystallinity assessment of anthropogenic calcites using Raman micro-spectroscopy

hal.structure.identifierArchéosciences Bordeaux
hal.structure.identifierUniversity of the Free State [South Africa] [UFS]
dc.contributor.authorTOFFOLO, Michael
dc.contributor.authorPINKAS, Iddo
dc.contributor.authorGALLO, Ana Álvaro
dc.contributor.authorBOARETTO, Elisabetta
dc.date.accessioned2025-02-22T03:00:59Z
dc.date.available2025-02-22T03:00:59Z
dc.date.issued2023
dc.identifier.issn2045-2322
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/205123
dc.description.abstractEnAnthropogenic calcite is a form of calcium carbonate produced through pyrotechnological activities, and it is the main component of materials such as lime binders and wood ash. This type of calcite is characterized by a significantly lower degree of crystallinity compared with its geogenic counterparts, as a result of different formation processes. The crystallinity of calcite can be determined using infrared spectroscopy in transmission mode, which allows decoupling particle size effect from atomic order and thus effectively distinguish anthropogenic and geogenic calcites. On the contrary, Raman micro-spectroscopy is still in the process of developing a reference framework for the assessment of crystallinity in calcite. Band broadening has been identified as one of the proxies for crystallinity in the Raman spectra of geogenic and anthropogenic calcites. Here we analyze the full width at half maximum of calcite bands in various geogenic and anthropogenic materials, backed against an independent crystallinity reference based on infrared spectroscopy. Results are then used to assess the crystallinity of anthropogenic calcite in archaeological lime binders characterized by different states of preservation, including samples affected by the formation of secondary calcite, and tested on micromorphology thin sections in which lime binders are embedded in sediments.
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enCrystallinity assessment of anthropogenic calcites using Raman micro-spectroscopy
dc.typeArticle de revue
dc.identifier.doi10.1038/s41598-023-39842-8
dc.subject.halSciences de l'Homme et Société/Archéologie et Préhistoire
dc.subject.halChimie/Chimie inorganique
bordeaux.journalScientific Reports
bordeaux.page12971
bordeaux.volume13
bordeaux.hal.laboratoriesArchéosciences Bordeaux - UMR 6034*
bordeaux.issue1
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionUniversité Bordeaux Montaigne
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-04960098
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04960098v1
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