definisi
hornfels punika rock metamorphic kawangun dening kontak antarane mudstone utawa sugih lempung rock, lan awak igneous panas, lan nggantosi padha panas ngrubah saka rock asli
rhyolite punika rock igneous nggoleki-grained kang sugih ing silika
Sajarah
asal
new zealand
lor amerika
panemu
Ora dingerteni
Ferdinand von Richthofen
Etimologi
saka german kang tegese hornstone
saka rhyolit german, saka stream lahar greek rhuax + watu lithos
kelas
rocks metamorphic
batuan beku
sub-kelas
awet rock, rock alus
awet rock, hard rock
kulawarga
group
-
vulkanik
kategori liyane
rock grained nggoleki, rock opaque
rock grained coarse, rock opaque