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
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
panemu
Ora dingerteni
Alexandre brongniart Rene Hauy
Etimologi
saka german kang tegese hornstone
saka trakhus greek atos 'utawa roughness trakhutēs
kelas
rocks metamorphic
batuan beku
sub-kelas
awet rock, rock alus
awet rock, medium atose rock
kategori liyane
rock grained nggoleki, rock opaque
rock grained nggoleki, rock opaque