definisi
Anthracite jinis rock sedimentary kang hard lan macem-macem batu bara sing wis luster dhuwur
ignimbrite punika rock vulkanik dumadi utamané saka pecahan pumice, kawangun dening consolidation saka materi setor dening mili pyroclastic
asal
pennsylvania, kita
new zealand
panemu
Dingertèni
Patrick marshall
Etimologi
saka anthrakites greek, saka anthrax, anthrak meaning coal
saka geni ignis latin + Imber, padusan imbr- udan, badai maya + -ite
kelas
rocks metamorphic
batuan beku
sub-kelas
awet rock, rock alus
awet rock, medium atose rock
group
ora ditrapake
vulkanik
kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained nggoleki, rock opaque