Obsidian lan Rapakivi Granit Definition

Obsidian

Rapakivi Granit

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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

rapakivi granit punika granit hornblende-biotite ngemot kristal dibunderaké akeh orthoclase kang mantled karo oligoclase

1.2 Sajarah

1.2.1 asal

Ethiopia

finland, europe

1.2.2 panemu

obsius

Jakob sederholm

1.3 Etimologi

saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius

saka rapakivi finnish kang stands for rock crumbly

1.4 kelas

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

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