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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.

Andesite Igneous Rock Andesite Igneous Rock   
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Andesite is an igneous rock that consists of mostly feldspar and biotite. This rock is usually gray, brown, black,...
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Anorthosite Igneous Rock Anorthosite Igneous Rock   
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Anorthosite is a white to light gray-colored intrusive igneous rock. Major minerals of anorthosite include just feldspar. Anorthosite has...
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Basalt Igneous Rock Basalt Igneous Rock   
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Basalt is a common, gray to black extrusive igneous rock. Major minerals of basalt include pyroxene and feldspar. Basalt...
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Carbonatite Igneous Rock Carbonatite Igneous Rock   
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Carbonatite is a light gray to yellow igneous rock. Carbonatite can form as either an intrusive or extrusive rock....
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Diorite Igneous Rock Diorite Igneous Rock   
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Diorite is an often gray, intrusive igneous rock. Major minerals include feldspar and hornblende. Diorite is medium to coarse-grained...
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Gabbro Igneous Rock Gabbro Igneous Rock   
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Gabbro is a dark gray, intrusive rock. Major minerals include feldspar and pyroxene. Gabbro has a medium to coarse-grained...
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Granite Igneous Rock - Red/Pink Granite Igneous Rock - Red/Pink   
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Granite is a medium-grained textured igneous rock with a mixture of different colored minerals. Major minerals include feldspar, quartz...
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Granite Igneous Rock - Gray/White Granite Igneous Rock - Gray/White   
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Granite is a common volcanic igneous rock that forms below ground. This attractive igneous rock is a speckled white...
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Monzonite Igneous Rock Monzonite Igneous Rock   
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Monzonite is a dark gray to green, intrusive igneous rock. Major minerals include feldspars, pyroxene, and hornblende. Monzonite has...
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Obsidian Igneous Rock Obsidian Igneous Rock   
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Obsidian is a black, extrusive igneous rock that is often called volcanic glass due to its absent crystals and...
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