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sparsely reported in the literature. Keeping this in view, we have carried
out laboratory measurements of the dielectric constant and loss tangents
of some samples of sandstone, quartzite, limestone, marble, dolerite and
basalt. LCR bridge and Q-meter have been employed for measurements
in the frequency range 10 - 10' Hz. The results have been presented in the
form of variation of these parameters with frequency which show characteristic
features. Observations on the effect of moisture content of these
samples on the dielectric properties have also been reported. Further,
correlation of petrographic studies of rock samples with measured variations
of dielectric properties has been attempted.
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