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Obsidian
Obsidian

Troctolite
Troctolite



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Troctolite

Obsidian lan Troctolite Definition

1 Definition
1.1 definisi
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
troctolite jinis rock intrusive mafic. iku kasusun ateges Jumlah utama nanging maneko rupo olivine lan calcic plagioclase bebarengan karo pyroxene suntingan. iku anorthosite-sugih olivine, utawa sing relatif pyroxene-kurang saka gabbro
1.2 Sajarah
1.2.1 asal
Ethiopia
dingerteni
1.2.2 panemu
obsius
christian Leopold von Buch
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka troklotit german, saka trōktēs greek, iwak segara (dijupuk dadi sejenis iwak)
1.4 kelas
batuan beku
batuan beku
1.4.1 sub-kelas
awet rock, medium atose rock
awet rock, hard rock
1.5 kulawarga
1.5.1 group
vulkanik
plutonic
1.6 kategori liyane
rock opaque
rock grained coarse, rock opaque