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Figure 1
(a) Still image from a video camera showing the Volcelia stone mounted with clamps on a padded easel. Rubber padding, both on clamps and easel, protected the artifact. The cross-hair of the video camera was trained on the optical fluorescence (not shown) of the marble substrate where the beam hit the sample. (b) A detailed view of the letter `A' used for this study.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 19| Part 4| May 2012| Pages 547-550
doi:10.1107/S0909049512021164
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