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Picrite
Picrite

Obsidian
Obsidian



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Obsidian

Picrite lan Obsidian Definition

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Definition

definisi

picrite iku macem-macem dhuwur-Magnesium basalt olivine sing sugih banget ing olivine Mineral
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

pulo hawaii
Ethiopia

panemu

Ora dingerteni
obsius

Etimologi

saka pikros greek pait + -ite, abad ka-19
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius

kelas

batuan beku
batuan beku

sub-kelas

awet rock, hard rock
awet rock, medium atose rock

kulawarga

group

vulkanik
vulkanik

kategori liyane

rock grained nggoleki, rock opaque
rock opaque