definisi
taconite punika biji wesi kurang-bahan kang belongs kanggo sedimen rock lan ngemot bab 27% wesi lan 51% silika
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
asal
western australia, Minnesota
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panemu
Newton Horace Winchell
Alexandre brongniart Rene Hauy
Etimologi
saka jeneng gunung taconic ing england anyar
saka trakhus greek atos 'utawa roughness trakhutēs
kelas
rocks sedimentary
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
kategori liyane
rock grained coarse, rock opaque
rock grained nggoleki, rock opaque