1 Definition
1.1 definisi
rhyolite punika rock igneous nggoleki-grained kang sugih ing silika
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
1.2 Sajarah
1.2.1 asal
1.2.2 panemu
Ferdinand von Richthofen
Alexandre brongniart Rene Hauy
1.3 Etimologi
saka rhyolit german, saka stream lahar greek rhuax + watu lithos
saka trakhus greek atos 'utawa roughness trakhutēs
1.4 kelas
1.4.1 sub-kelas
awet rock, hard rock
awet rock, medium atose rock
1.5 kulawarga
1.5.1 group
1.6 kategori liyane
rock grained coarse, rock opaque
rock grained nggoleki, rock opaque