rhyolite is an igneous volcanic rock of felsic (silica-rich) composition. due to high silica content rhyolite lava is very

petrology plutonic felsic volcanic plugs silica rock rajasthan igneous lava ancient aravalli asia background canyon countryside destination extrusive equivalent fissure type formation geological geology granite plutons highlands hypabyssal rocks india indian isolated lithological formations malani suite contact mine mineral mountain mountains national monuments of nature old plug precambrian age pyroclastic quarry rhyolite stone subvolcanic vacation volcano