Abstract
The permittivity measured at a frequency of 10 GHz normalized to constant density is the same within the experimental error for talc, baryte and dolomite. In the case of clay and kaolin, it is about 10% higher. This is attributed to the high content of Al2O3 (30–40%) in them, which interpretation is proved by experiment.
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Hanna, F.F., Hakim, I.K., Bishai, A.M. et al. Permittivity in the microwave region of some natural minerals. PAGEOPH 120, 772–777 (1982). https://doi.org/10.1007/BF00876659
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DOI: https://doi.org/10.1007/BF00876659