Igneous Rocks

Texture term for Coarsed grained

Texture term for Fine Grained

Texture term for No crystals

Texture term for two distinctive crystal types

Texture term for very coarsed grained crystals, i.e bigger than your thumb

Trapped bubble gasses that create wholes as in pumice

Porphiritc fine-grained, extrusive igneous rock composed mainly of plagioclase with other minerals such as hornblende, pyroxene and biotite

Type of igneous rock that forms bigger crystals, and cools slower

Dark-colored volcanic glass that forms from the very rapid cooling of molten rock material. It cools so rapidly that crystals do not form

a dark-colored, vesicular, extrusive igneous rock.

a light-colored, extremely coarse-grained intrusive igneous rock. It often contains rare minerals that are not found in other parts of the magma chamber.

A coarse-grained, intrusive igneous rock that contains a mixture of feldspar, pyroxene, hornblende and sometimes quartz.

Fine-grained, dark-colored extrusive igneous rock composed mainly of plagioclase and pyroxene.

a coarse-grained, dark colored, intrusive igneous rock that contains feldspar, augite and sometimes olivine

a light-colored, fine-grained, extrusive igneous rock that typically contains quartz and feldspar minerals.