PHIL HILL / SCIENCE PHOTO LIBRARY PHIL HILL / SCIENCE PHOTO LIBRARY
Geochemical analysis. Desk holding a portable X-ray fluorescence (XRF) spectrometer (centre right) used to determine the mineral composition of rock samples on location. X-rays are used to induce fluorescence in the material, with each different element emitting radiation at a characteristic energy. The machine is housed in a lead lined desktop box and connected to a field computer.
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