Types Of Igneous Rocks 😬 Flashcards

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1
Q
Formed from magma 
formed underground 
cool slowly 
course texture 
has large mineral crystals 

examples are granite and Gabbro

A

Intrusive

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2
Q

Intrusive

A
Formed from magma 
formed underground 
cool slowly 
course texture 
has large mineral crystals 

examples are granite and Gabbro

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3
Q
Formed from lava 
formed on the surface
cools quickly 
fine texture or glassy texture
small crystals or no crystals 

examples are rhyolite basalt Pumice scoria obsidian

A

Extrusive

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4
Q

Extrusive

A
Formed from lava 
formed on the surface
cools quickly 
fine texture or glassy texture
small crystals or no crystals 

examples are rhyolite basalt Pumice scoria obsidian

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