Igneous Rock Identification and Characteristics

Front

What is an intermediate igneous rock with aphanitic texture?

Back

Andesite

Front

What type of igneous rock is vesicular, pyroclastic, has a glassy texture, is light in color, and floats in water?

Back

Pumice

Front

What is the term for volcanic glass?

Back

Obsidian

Front

What is the name of the intrusive rock that resembles granite but does not contain quartz?

Back

Syenite

Front

What is a felsic rock with an intrusive texture?

Back

Granite

Front

What is the texture of igneous rocks that cool quickly on the surface?

Back

Aphanitic texture

Front

What is the texture of igneous rocks that cool slowly underground?

Back

Phaneritic texture

Front

What type of igneous rock is formed from lava that cools quickly and has a glassy appearance?

Back

Obsidian

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive rocks form from magma cooling underground, while extrusive rocks form from lava cooling on the surface.

Front

What is the primary mineral composition of granite?

Back

Feldspar, quartz, and mica.