1 Definition
1.1 definisi
chert punika hard, peteng, opaque rock sedimentary kang dumadi saka silika karo susunan nggoleki-grained amorf
taconite punika biji wesi kurang-bahan kang belongs kanggo sedimen rock lan ngemot bab 27% wesi lan 51% silika
1.2 Sajarah
1.2.1 asal
dingerteni
western australia, Minnesota
1.2.2 panemu
Dingertèni
Newton Horace Winchell
1.3 Etimologi
saka quartz Flint-kaya, 1670s, diweruhi origin- istilah lokal, kang wis dijupuk menyang nggunakake geologi
saka jeneng gunung taconic ing england anyar
1.4 kelas
rocks sedimentary
rocks sedimentary
1.4.1 sub-kelas
awet rock, hard rock
awet rock, medium atose rock
1.5 kulawarga
1.5.1 group
ora ditrapake
ora ditrapake
1.6 kategori liyane
rock grained nggoleki, rock opaque
rock grained coarse, rock opaque