definisi
greywacke wis ditetepake minangka rock sandstone coarse-grained peteng kang ngandhut sen lempung luwih saka 15 saben
taconite punika biji wesi kurang-bahan kang belongs kanggo sedimen rock lan ngemot bab 27% wesi lan 51% silika
asal
-
western australia, Minnesota
panemu
Ora dingerteni
Newton Horace Winchell
Etimologi
saka grauwacke german, saka grau grey + wacke
saka jeneng gunung taconic ing england anyar
kelas
rocks sedimentary
rocks sedimentary
sub-kelas
awet rock, hard rock
awet rock, medium atose rock
kategori liyane
rock grained nggoleki, rock opaque
rock grained coarse, rock opaque