Thermoluminescence and electron paramagnetic resonance (EPR) studies of mineral chrysocolla (DIOPTASE (cas 15606-25-4))

Add time:09/03/2019    Source:sciencedirect.com

The natural mineral chrysocolla (CuSiO3·2H2O) has been investigated in terms of thermally stimulated luminescence and EPR measurements. The glow curves for natural samples present three glow peaks at 190, 357 and 450°C. Pre annealed and subsequently irradiated samples give rise to four glow peaks at 140°C, 193°C, 305°C and 450°C. The formation of Ho centers at the expense of water molecules present in the channels has been identified by EPR measurements.

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