Igneous rocks close igneous rockIgneous rocks ... These crystals will grow and interlock to form a hard crystalline rock. Basalt is usually formed when lava solidifies on the earth’s surface ...
What FACTS ABOUT ROCKS do you know? They are abundant on earth, and yet little is known about them. These facts will increase your knowledge of the rocks.
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What are thundereggs? The rare, chalcedony-filled rocksproducing extrusive or volcanic igneous rocks like basalt. As magma cools, the minerals within it begin to crystallize and ...
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