noun. A fine-grained, light-colored igneous rock, composed chiefly of feldspar and quartz.

noun. A compact, very hard rock, almost flinty in texture. made up of quartz and orthoclase feldspar intimately mixed.

noun. A finegrained rock, flintlike in fracture, consisting essentially of orthoclase feldspar with occasional grains of quartz.

noun. A fine grained volcanic extrusive rock, generally light in color, composed of felsic minerals.

noun. Any light-colored volcanic rock whose true mineralogy is not yet determined.

"The reason I wanted to see this beach is because the book said that if, conditions were right, the sound of the waves hitting this unique shoreline of flat, shingle-like “pink rhyolite and felsite bedrock” makes a tinkling, bell-like sound."

Gujarat  clinkers  hundred-meter  lapilli  mile-high