Sponsor of the Day:
Jerkmate
https://geology.com/rocks/scoria.shtml
Scoria: Igneous Rock - Pictures, Definition & More
Scoria is a dark colored, extrusive igneous rock with a vesicular texture.
igneous rock picturesscoriadefinition
https://geology.com/rocks/obsidian.shtml
Obsidian: Igneous Rock - Pictures, Uses, Properties
Obsidian is an igneous rock, a volcanic glass used for thousands of years to make cutting tools.
igneous rock picturesuses propertiesobsidian
https://geology.com/rocks/gabbro.shtml
Gabbro: Igneous Rock - Pictures, Definition & More
Gabbro is an intrusive igneous rock that is black in color and has a composition similar to basalt.
igneous rock picturesdefinition
https://geology.com/rocks/pumice.shtml
Pumice: Igneous Rock - Pictures, Definition & More
Pumice is an extrusive igneous rock with a vesicular texture and very low specific gravity. It is used to make lightweight concrete, abrasive products and more.
igneous rock picturespumicedefinition
https://geology.com/rocks/andesite.shtml
Andesite: Igneous Rock - Pictures, Definition & More
Andesite is an extrusive igneous rock with a mineral composition between granite and basalt. It is named after the Andes Mountains, where it is very abundant.
igneous rock picturesdefinition
https://geology.com/rocks/diorite.shtml
Diorite: Igneous Rock - Pictures, Definition & More
Diorite is an intrusive igneous rock of intermediate composition.
igneous rock picturesdefinition
https://geology.com/rocks/granite.shtml
Granite: Igneous Rock - Pictures, Definition & More
Granite is the most widely known igneous rock. It is an intrusive rock with visible grains of feldspar, quartz, mica, and amphibole minerals. It is durable and...
igneous rock picturesgranitedefinition