IGNEOUS ROCKS
The Story of Igneous Rocks
Igneous rock form from the cooling and crystallization of liquid rock. (magma or lava)
Light Color | Color | Dark Color |
Felsic Magma | Magma Type | Mafic Magma |
Mostly Quartz, Feldspar, Mica | Magma Composition | Mostly Ferromagnesian Minerals |
Thick Slow Flowing | Magma Thickness | Thin Fast Flowing |
Texture of Rocks | ||
Granite | Gabbro | |
![]() |
Coarse Grained
(larger crystals) |
![]() |
Rhyolite | Basalt | |
![]() |
Fine Grained
(barely visible crystals) |
![]() |
Pumice & Obsidian | Scoria | |
![]() |
Glassy/Lava Rocks
(no crystals) |
![]() |
![]() |
ROCK: a group minerals bound together
|
||
Light Colored Quartz | Dark Colored Biotite Mica | Pink Colored Feldspar |
![]() |
![]() |
![]() |
All Three Are In Igneous Granite | All Three Are In Sedimentary Sandstone | All Three Are In Gneiss |
![]() |
![]() |
![]() |
*