Gritstone lan Anthracite Definition
definisi
gritstone utawa grit punika hard, coarse-grained, siliceous sandstone
Anthracite jinis rock sedimentary kang hard lan macem-macem batu bara sing wis luster dhuwur
asal
pennines, england
pennsylvania, kita
panemu
JJ Ferber
Dingertèni
Etimologi
saka grit + watu
saka anthrakites greek, saka anthrax, anthrak meaning coal
kelas
rocks sedimentary
rocks metamorphic
sub-kelas
awet rock, hard rock
awet rock, rock alus
group
ora ditrapake
ora ditrapake
kategori liyane
rock grained coarse, rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque