1 Definition
1.1 definisi
Anthracite jinis rock sedimentary kang hard lan macem-macem batu bara sing wis luster dhuwur
rhyolite punika rock igneous nggoleki-grained kang sugih ing silika
1.2 Sajarah
1.2.1 asal
pennsylvania, kita
lor amerika
1.2.2 panemu
Dingertèni
Ferdinand von Richthofen
1.3 Etimologi
saka anthrakites greek, saka anthrax, anthrak meaning coal
saka rhyolit german, saka stream lahar greek rhuax + watu lithos
1.4 kelas
rocks metamorphic
batuan beku
1.4.1 sub-kelas
awet rock, rock alus
awet rock, hard rock
1.5 kulawarga
1.5.1 group
1.6 kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained coarse, rock opaque