The Probert Encyclopaedia of Rocks & Minerals

METAQUARTZITE

Metaquartzite is a metamorphosed sandstone, in which the grains of silica have fused together to form a hard, massive rock. Metaquartzite contains more than 90 percent quartz, which gives the rock a pale, sugary appearance. Metaquartzite is a fine to medium-grained rock formed at great heat under relatively low pressure.
Research Metaquartzite