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A Technical Study of Five Ruby Ambrotypes
2009
unpublished
Ruby ambrotypes are images made photographically upon a colored glass support. A descriptive study of ruby ambrotypes was carried out on five samples. Goals of analysis included identifying the colorants in the glass support, classifying coatings on the surface and characterizing tarnish. Elemental analysis performed with x-ray fluorescence (XRF) spectroscopy and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) revealed the presence of manganese as the colorant in the
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