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      MULTI-INSTRUMENTAL IDENTIFICATION OF ORPIMENT IN ARCHAEOLOGICAL MORTUARY CONTEXTS

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          Abstract

          This paper reports on an unknown yellowish mineral compound found in an archaeological context from Chorrillos cemetery (Calama, Chile) dating to the Early Formative period (800 - 200 B.C.). We used optic microscopy, SEM, EDX, ¹H-RMN, 13C-RMN, and infrared (IR) and Raman spectroscopy to tease out the chemical and molecular composition of the sample. The microscopic images show amorphous yellowish granulates with heterogeneous chemical surfaces. ¹H-RMN and 13C-RMN negative results show that the sample is free of organic matter. The SEM and EDX indicate the presence of arsenic and sulfur in the sample. The IR and Raman analyses suggest the presence of orpiment which is a toxic yellow arsenic sulfide mineral.

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          Most cited references 34

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          Arica Inserta en una Región Arsenical: El Arsénico en el Ambiente que Afecta y 45 Siglos de Arsenicismo Crónico

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            Chem

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              Inorg. Chem

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                Author and article information

                Affiliations
                [1 ] Universidad de Tarapacá Chile
                [2 ] Pontificia Universidad Católica de Chile Chile
                [3 ] Pontificia Universidad Católica de Valparaíso Chile
                [4 ] Universidad Andrés Bello Chile
                [5 ] Universidad de Chile Chile
                [6 ] Universidad de Tarapacá Chile
                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                jcchems
                Journal of the Chilean Chemical Society
                J. Chil. Chem. Soc.
                Sociedad Chilena de Química (Concepción )
                0717-9707
                September 2014
                : 59
                : 3
                : 2571-2573
                S0717-97072014000300010 10.4067/S0717-97072014000300010

                http://creativecommons.org/licenses/by/4.0/

                Product
                Product Information: SciELO Chile
                Categories
                CHEMISTRY, MULTIDISCIPLINARY

                General chemistry

                Northern Chile, Pigments, Chorrillos, SEM-EDX, Raman spectroscopy

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