definisi
rhyolite punika rock igneous nggoleki-grained kang sugih ing silika
porphyry punika reddish-coklat kanggo kain rock igneous ngemot phenocrysts akeh macem-macem mineral ditempelake ing matrik nggoleki-grained
Sajarah
asal
lor amerika
egypt
panemu
Ferdinand von Richthofen
Ora dingerteni
Etimologi
saka rhyolit german, saka stream lahar greek rhuax + watu lithos
saka lawas porfire french, saka porfiro italian lan ing sawetara kasus langsung saka porphyrites latin
kelas
batuan beku
batuan beku
sub-kelas
awet rock, hard rock
awet rock, hard rock
kulawarga
group
vulkanik
plutonic
kategori liyane
rock grained coarse, rock opaque
rock grained nggoleki, rock opaque