Laboratory measurement of dielectric constant and loss tangent of Indian rock samples

Abstract

The data on dielectric properties of Indian rock samples are very 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.