definisi
travertine punika Mineral dumadi saka kalsium karbonat dilapisi kawangun dening Deposition saka spring Waters
obsidian punika kaca vulkanik alami kawangun minangka rock igneous extrusive. diprodhuksi nalika lahar felsic extruded saka gunung mbledhos ndingin kanthi cepet karo wutah kristal minimal
Sajarah
asal
italy
Ethiopia
panemu
Marcus vitruvius pollio
obsius
Etimologi
saka travertino italian jenis bangunan watu, saka tiburs, kata saka tibur (Tivoli), ing Italia
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
kelas
rocks sedimentary
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
kulawarga
group
-
vulkanik
kategori liyane
rock grained nggoleki, rock opaque
rock opaque