definisi
litchfieldite punika rock langka igneous kang coarse-grained, foliated lan macem-macem nepheline syenite, kadhangkala uga disebut minangka nepheline syenite gneiss utawa gneissic nepeheline syenite
pumice punika rock vulkanik sing kasusun saka Highly vesicular atos kaca vulkanik tekstur, kang bisa utawa ora bisa ngemot kristal
Sajarah
asal
usa
spain
panemu
Bayley
Ora dingerteni
Etimologi
saka occurrence ing Litchfield, maine, usa
saka pomis french lawas, saka varian dialect latin saka pumex
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
kulawarga
group
plutonic
vulkanik
kategori liyane
rock grained coarse, rock opaque
rock grained nggoleki, rock opaque