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