definisi
gritstone utawa grit punika hard, coarse-grained, siliceous sandstone
luxullianite jinis langka granit, dikenal kanggo ngarsane kelompok-kelompok saka radially disusun kristal Tourmaline acicular kang diubengi déning phenocrysts saka orthoclase lan quartz ing matrik saka kuarsa, Tourmaline, Feldspar alkali, mica coklat.
kategori liyane
rock grained coarse, rock opaque
rock grained coarse, rock opaque