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50.0 MB (2.7 MB compressed)
5128 x 3408 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
MARK WILLIAMSON / SCIENCE PHOTO LIBRARY MARK WILLIAMSON / SCIENCE PHOTO LIBRARY
A sample of Fluorite crystal (CaF2). Photographed at Focus Terra, the Earth Science Research and Information Centre of ETH, the Swiss Federal Institute of Technology, Zurich.
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