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Igneous Rocks

Igneous Rocks form by some of the most interesting methods of all rocks on Earth. Kids love the varied colors, textures and properties of our igneous rock samples. Each igneous rock sample is individually packaged and comes with an information card to tell you about your new rock.  Please note that we always try to have the largest samples possible, but are at times limited by the mines. Typical samples sizes are generally 1-2 inches in length or width but can vary based in availability and natural formation.

Snowflake Obsidian Igneous Rock Snowflake Obsidian Igneous Rock   
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Snowflake Obsidian is an extrusive igneous rock that forms from volcanic lava. Major minerals include feldspar, quartz and mica....
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Pegmatite Igneous Rock Pegmatite Igneous Rock   
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Pegmatite is a light-colored intrusive igneous rock. Major minerals include quartz and mica. Large mineral grains are characteristic of...
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Peridotite Igneous Rock Peridotite Igneous Rock   
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Peridotite is a black or green intrusive igneous rock. Major minerals include olivine and pyroxene. Peridotite is a medium-grained...
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Pumice Igneous Rock Pumice Igneous Rock   
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Pumice is a light gray, extrusive igneous rock. Major minerals include feldspar, quartz and mica. Pumice has a vesicular...
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Rhyolite Igneous Rock Rhyolite Igneous Rock   
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Rhyolite is a light pink to gray, extrusive igneous rock. Major minerals include feldspar, quartz and mica. Rhyolite is...
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Scoria Igneous Rock Scoria Igneous Rock   
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Scoria is a red, brown or black extrusive igneous rock that has a vesicular texture, which means that it...
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Syenite Igneous Rock Syenite Igneous Rock   
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Syenite is a gray to pink intrusive igneous rock. Major minerals include feldspar and hornblende. Syenite has a fine...
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Trachyte Igneous Rock Trachyte Igneous Rock   
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Trachyte is a white to light gray extrusive igneous rock. Major minerals include feldspar and biotite mica. Trachyte has...
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Volcanic Ash Igneous Rock Volcanic Ash Igneous Rock   
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Volcanic ash is composed of clay to sand-sized particles of rock and volcanic glass. This material is expelled from...
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Volcanic Breccia Igneous Rock Volcanic Breccia Igneous Rock   
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Volcanic Breccia is a gray to green extrusive igneous rock. Breccias are composed of various minerals and have angluar,...
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