Felsic Xenocryst in the Bedded Porcellanite (Mesoproterozoic) of the Central India: An Evidence Suggesting the Rhyolitic Source of Silica. Glob. J. Earth Sci. Eng. 2017, 4 (1), 18-26. https://doi.org/10.15377/2409-5710.2017.04.3.