definisi
porphyry punika reddish-coklat kanggo kain rock igneous ngemot phenocrysts akeh macem-macem mineral ditempelake ing matrik nggoleki-grained
shoshonite punika rock basaltic, mlaku a trachyandesite potassic, dumadi saka olivine, augite lan plagioclase phenocrysts ing groundmass karo plagioclase calcic lan sanidine lan sawetara kaca vulkanik peteng-colored
Sajarah
asal
egypt
wyoming, usa
panemu
Ora dingerteni
iddings
Etimologi
saka lawas porfire french, saka porfiro italian lan ing sawetara kasus langsung saka porphyrites latin
saka panggonan asal disebut shoshone riverin wyoming
kelas
batuan beku
batuan beku
sub-kelas
awet rock, hard rock
awet rock, medium atose rock
kulawarga
group
plutonic
vulkanik
kategori liyane
rock grained nggoleki, rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque