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Analysis of mica inclusions using LA-ICP-MS: 1 a new approach for sourcing raw material of ceramics

Abstract : The analytical methods used for determining the origin of archaeological ceramics, such as petrography, X-raypowder diffraction, X-rayfluorescence spectrometry, attain their limits for differentiating bodies of similarcomposition, especially when they derive from the alteration of granitoid rocks. Our new approach is based onthe chemical analysis of biotite inclusions in ceramic bodies using laser ablation-inductively coupled plasma-mass spectrometry, and enables us to identify the geological origin of the clay used. Spot analysis of the biotiteinclusions contained in ceramics made from clay derived from the alteration of rocks can be linked to theoriginal granitic massif. The thin section or rock analysis of biotite inclusions is relatively fast. The dosage oftrace elements, such as lithium and vanadium establishes afiliation between the rocks and ceramics. Using thisgeochemical base, it is possible to establish a link between a granitic batholite and early ceramics and to proposea circumscribed production area. This article will focus on occupations located on islands from western France.
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Submitted on : Friday, June 8, 2018 - 1:53:06 PM
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Gehres - Analysis of mica incl...
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Benjamin Gehres, Guirec Querré. Analysis of mica inclusions using LA-ICP-MS: 1 a new approach for sourcing raw material of ceramics. Journal of Archaeological Science: Reports, Elsevier, 2018, 21, pp.912-920. ⟨10.1016/j.jasrep.2017.05.018⟩. ⟨hal-01810988⟩



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