definisi
Anthracite jinis rock sedimentary kang hard lan macem-macem batu bara sing wis luster dhuwur
tephrite iku sawijining aphanitic kanggo porphyritic tekstur, vulkanik rock igneous
Sajarah
asal
pennsylvania, kita
germany
panemu
Ora dingerteni
van tooren
Etimologi
saka anthrakites greek, saka anthrax, anthrak meaning coal
saka tephra greek, awu saka basa indo-european, kanggo ngobong
kelas
rocks metamorphic
batuan beku
sub-kelas
awet rock, rock alus
awet rock, hard rock
kulawarga
group
-
vulkanik
kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque