Rapakivi Granit lan Obsidian Definition

Rapakivi Granit

Obsidian

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1 Definition

1.1 definisi

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

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

1.2 Sajarah

1.2.1 asal

finland, europe

Ethiopia

1.2.2 panemu

Jakob sederholm

obsius

1.3 Etimologi

saka rapakivi finnish kang stands for rock crumbly

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

1.4 kelas

batuan beku

1.4.1 sub-kelas

awet rock, hard rock

awet rock, medium atose rock

1.5 kulawarga

1.5.1 group

plutonic

vulkanik

1.6 kategori liyane

rock grained coarse, rock opaque

rock opaque

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