quartzite Synonyms

calcareous arenite crystal quartz krzemionki hornstones hard greyish-black stone boulders Rockingham quarrystone eveslogite blueschist arkose crystallized quartz granitelike rock brick pavers argillaceous arenite flagstone material fine-grained aggregate metamorphic rocks particulate rock-like material monolithic rock crystalline rocks calcilith ballast stone arenite anorthosite aplite calculus breccia boulder bluestone basalt ballast argillite andesite amethyst aggregate chalcedony chalk amphibolite bedrock stone quartz psammite pegmatite graywacke ganister diorite chert agate