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The Geoscience Economy Igneous Rock Collection is an economy collection of 6 commonly known igneous rocks. Igneous rocks are formed by the cooling of molten rock, either magma or lava. Each generous specimen is between 1-1/4 to 1-1/2 inches and the whole set is packaged in a resealable zip lock bag with a label.
Sold as a Set of 6Set of six igneous rock specimens for studying rock and mineral properties in classroom demonstrations and experimentsIgneous rocks form from molten rock that cools and solidifies either above or below the surface of the earthIncludes the following specimens of granite, gabbro, basalt, rhyolite, obsidian, and scoriaPacked in a resealable bag that is labeled with the name and description of each rock