Microelemental characterisation of Aboriginal Australian natural Fe oxide pigments

Rachel Popelka-Filcoff; Claire Lenehan; Enzo Lombi; Erica Donner; Daryl Howard; Martin de Jonge; David Paterson; Keryn Walshe; Allan Pring

doi:10.1039/c5ay01547b

Microelemental characterisation of Aboriginal Australian natural Fe oxide pigments

Rachel Popelka-Filcoff, Claire Lenehan, Enzo Lombi, Erica Donner, Daryl Howard, Martin de Jonge, David Paterson, Keryn Walshe, Allan Pring

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

This manuscript presents the first comprehensive microcharacterisation of Fe oxide minerals used in Aboriginal Australian mineral pigments. The combination of X-ray fluorescence microscopy (XFM) and light microscopy provides a broad characterisation as well as the ability to spatially match visual observation with elemental composition. A novel method for casting pigment samples in a pattern on a slide was used for consistent elemental mapping. Semiquantitative bulk data was also collected and compared to the microscopic and microelemental data. These analyses demonstrate the ability to document the variability in ochre pigments in Australia, as well as which elements drive the variation within and between ochre source locations. The methods developed provide a more comprehensive understanding of other complex natural mineral pigments worldwide.

Original language	English
Pages (from-to)	7363-7380
Number of pages	18
Journal	Analytical Methods
Volume	7
Issue number	17
DOIs	https://doi.org/10.1039/c5ay01547b
Publication status	Published - 7 Sept 2015

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AU - Donner, Erica

AU - Howard, Daryl

AU - de Jonge, Martin

AU - Paterson, David

AU - Walshe, Keryn

AU - Pring, Allan

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AB - This manuscript presents the first comprehensive microcharacterisation of Fe oxide minerals used in Aboriginal Australian mineral pigments. The combination of X-ray fluorescence microscopy (XFM) and light microscopy provides a broad characterisation as well as the ability to spatially match visual observation with elemental composition. A novel method for casting pigment samples in a pattern on a slide was used for consistent elemental mapping. Semiquantitative bulk data was also collected and compared to the microscopic and microelemental data. These analyses demonstrate the ability to document the variability in ochre pigments in Australia, as well as which elements drive the variation within and between ochre source locations. The methods developed provide a more comprehensive understanding of other complex natural mineral pigments worldwide.

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Microelemental characterisation of Aboriginal Australian natural Fe oxide pigments

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