1. Label the diagram using lava(L) & magma(M)
Name:__________________________________________Date:_____________ Block:
Igneous Rock Notes
Igneous rocks when_____________________________________________________________________
______________________________________________________________________________________
• The type of Igneous rock formed depends on the __________________ of the ________________
• Of all of the compounds present in Magma, _____________________ is the most abundant and
has the greatest effect on the magma characteristics.
Three Types of Magma: 1. 2. 3.
Low
Silica
High
Left Branch: Iron rich minerals that undergo abrupt changes as magma cools and crystalizes
Right Branch: Feldspar undergoes a continuous change of composition. Start out as calcium
rich and become sodium rich
Label the diagram using lava(L) & magma(M)

2. Intrusive Igneous Rock Extrusive Igneous Rock
Igneous rock mineral composition: (what minerals are found in igneous rock)
Igneous rocks contain many minerals, the rocks can be _________________ or ___________________
Felsic *
Pic:
Mafic *
Pic:
There are _____ types of igneous rock (the prefix in means to move into….ex means to move out of)
Intrusive Igneous Rock
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Extrusive Igneous Rock
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Igneous rocks are classified by their __________________
____________
Distribution of the ____________ or ____________ that make up the rock
Cools Quickly
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Cools Slowly
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

3. Porphyritic Rocks: _____________________________________________________________________
______________________________________________________________________________________
Example:
Vesicular Rocks: _______________________________________________________________________
Veins: ________________________________________________________________________________
Pegmatites: ___________________________________________________________________________
_____________________________________________________________________________________
Kimberlites: ___________________________________________________________________________
Example: Diamonds
Igneous Rocks in Construction:
Interlocking grain texture makes them strong, resistant to weather

4. Review Questions
Which is the most common igneous rock?__________________________________
Why does pumice float in water?_________________________________________
_________________________________________________________________________
Why does lava cool more quickly than magma?____________________________
What determines the texture of igneous rock?______________________________
5. A batholith forms from a large magma chamber that slowly cools deep beneath the earth’s surface. What type of texture is this igneous rock formation most likely to have?_____________________________