Mineralogical Analysis of Ochre and Rock Coatings from Mount Behn Using the Australian Synchrotron

04th December 2013

Finch et al 2013Seven excavated ochre samples and five pigments from the within laminar accretions on the wall of the Mount Behn rock art site in the Napier Range, Western Australia, have been analysed using the Australian Synchrotron to determine their mineral content. The excavated ochres were also analysed using powder x-ray microdiffraction to facilitate a comparison with Synchrotron data. Synchrotron Powder Diffraction techniques are known to be faster and have higher resolution than powder micro-XRD, so comparisons focused on differences in mineralogical phase identifications between the two datasets. The greater resolution of Synchrotron Powder Diffraction facilitated identification of some minor phase minerals not detected using micro-XRD. Results demonstrated that the Synchrotron is at least an order of magnitude faster at collecting diffraction intensity data than micro-XRD and the resolution of the synchrotron data is also about ten times greater than micro-XRD.

The citation for this poster is:

Finch, D., S. O’Connor, J. Balme, M. Aubert and J. Huntley 2013 Mineralogical Analysis of Ochre and Rock Coatings from Mount Behn Using the Australian Synchrotron. Poster presented at the AAA Annual Conference, 2-4 December, Coffs Harbour.

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