definisi
Anthracite jinis rock sedimentary kang hard lan macem-macem batu bara sing wis luster dhuwur
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
asal
pennsylvania, kita
dingerteni
panemu
Dingertèni
Alexandre brongniart Rene Hauy
Etimologi
saka anthrakites greek, saka anthrax, anthrak meaning coal
saka trakhus greek atos 'utawa roughness trakhutēs
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