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Igneous Rocks


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Description:   Classic, dark; from the Columbia Plateau.
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Description:   Coarse-grained plagioclase and pyroxene with some olivine.
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Description:   Coarse-grained, with microcline, biotite and horblende phenocrysts.
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Description:   Rhyolite is a pale, pink felsic rock with lower density than most igneous rocks.
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Description:   Diorite is a mix of dark pyroxene and light andesine provides perfect representation of an intermediate igneous rock.
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Description:   Gray-to-brown basaltic, with over 50% vesicles.
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Catalog Number: (470026-184)

Description:   Pale pink felsite, with small sanidine phenocrysts.
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Description:   Samples of Intrusive and Extrusive Igneous Rocks
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Description:   Gray andesite with large, blocky hornblende phenocrysts.
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Description:   Introduce your students to Gray Andesite with large phenocrysts of hornblende.
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Description:   Pumice is light colored glassy rock that floats in water.
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Description:   Porphyritic igneous rock containing biotite, feldspar, and hornblende.
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Description:   Pegmatite is igneous rock similar to granite but with larger crystals.
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Description:   Glassy; most specimens float in water.
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Description:   Shiny black volcanic glass showing conchoidal fracture and some spherulites.
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Description:   Gray, fine, friable, with abundant small sanidine crystal fragments.
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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-962-2660.
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