definisi
taconite punika biji wesi kurang-bahan kang belongs kanggo sedimen rock lan ngemot bab 27% wesi lan 51% silika
nephelinite punika rock igneous nggoleki-grained utawa aphanitic arupi meh tanggung saka nepheline lan clinopyroxene (macem-macem augite).
Sajarah
asal
western australia, Minnesota
brasil
panemu
Newton Horace Winchell
Ora dingerteni
Etimologi
saka jeneng gunung taconic ing england anyar
saka néphéline french, saka Nefele greek
kelas
rocks sedimentary
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
kulawarga
group
-
plutonic
kategori liyane
rock grained coarse, rock opaque
rock grained nggoleki, rock opaque