Larger crystals = ________ cooling
What is slower?
What is the mineral in this piece of granite that makes it pink?
What is potassium feldspar?
Where would someone looked to find the mineral composition for Andesite?
Where is the middle/bottom of pg. 6 in the reference table?
Molten material within earth's crust.
What is Magma?
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What is the range ( in percent % ) of Olivine that can be present in Peridotite?
The type of rock that forms from magma or lava cooling
An igneous rock
Smaller crystals = ________ cooling
what is faster?
( True or False )
An igneous rock that forms near Earth's surface will display a texture where plenty of mineral crystals can be seen
What is false?
An igneous rock that is light in color
What is felsic?
Where can someone find lava?
Where is the surface of the Earth?
What is the process that forms Igneous rocks?
This type of felsic igneous rock is black with a glassy texture.
Obsidian
Granite has this mineral size range ( in millimeters )
What is the texture of this rock?
What is fine grained?
Dunite and Peridotite are examples of these type of igneous rocks
What is ultra-mafic?
An igneous rock containing large crystals is this type of rock
What is an intrusive rock?
Rock formed from lava that erupted onto earth's surface
What is extrusive rock?
Geologists classify rocks into 3 major groups
Igneous
Sedimentary
Metamorphic
What is the name given to this unique rock texture?
What is porphyritic?
Andesite
What is fine grained?
What are the most common rock-forming minerals? (6 minerals)
Quartz, Feldspar, Biotite, Amphibole, Pyroxene, and Olivine
A dark colored felsic rock.
What is Obsidian?
Rock that formed from magma that has hardened beneath earth's surface?
What is intrusive rock?
What type of rock is this?
The Rock
Describe the process that forms the 2 different sized crystals in this rock
What is two stages where first large crystals can grow and then they are moved to the surface of the Earth where the rest of the magma lava cools rapidly
Why does this rock have holes in it?
What is volcanic gases trapped when cooling?
What is the maximum percentage of Potassium Feldspar that can be in a piece of Granite?
What is 75%?
Igneous rocks are classified by
What is texture and mineral composition?
Why do we have magma at the surface of the earth?
What is differences in density?
These are the building blocks of rocks
Minerals