igneous
Banded Rhyolite
Extrusive felsic igneous rock
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, featuring distinct alternating color bands of brown, yellow, and cream. Exhibits an aphanitic to glassy texture with a dull to sub-vitreous luster.
Identified More igneous →
Explore Banded Rhyolite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6 on the Mohs scale, featuring distinct alternating color bands of brown, yellow, and cream. Exhibits an aphanitic to glassy texture with a dull to sub-vitreous luster.
Formation & geological history
Formed from rapidly cooling silica-rich lava extruded on the Earth's surface, with flow banding developing during viscous movement before final solidification.
Uses & applications
Used primarily as a decorative stone, in lapidary arts for cabochons, and as a collector's specimen.
Geological facts
Flow banding in rhyolite records the movement and shearing of viscous lava flows just prior to eruption and cooling.
Field identification & locations
Identified by its fine-grained felsic composition and prominent parallel flow stripes. Commonly found in volcanic regions worldwide.
