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Fig. 3 | Progress in Earth and Planetary Science

Fig. 3

From: The responses of the four main substitution mechanisms of H in olivine to H2O activity at 1050 °C and 3 GPa

Fig. 3

Polarised spectra measured parallel to principal crystallographic axes for [Si] experiments, ordered from highest water activity (top) to lowest (bottom). Spectra are the average of multiple measurements, normalised to 1 cm and offset for clarity. The indicated band positions are (1) 3612 cm−1, (2) 3578 cm−1, (3) 3550 cm−1, (4) 3612 cm−1, (5) 3578 cm−1, (6) 3550 cm−1, (7) 3477 cm−1, (8) 3612 cm−1 and (9) 3566 cm−1

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