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Catalog Number: (470025-348)

Description:   Study the Formation of Different Igneous Rocks
Description:   Dark gray, with hornblende as the dominant mafic mineral.
Description:   Grayish black trap rock.
Description:   Coarse-grained plagioclase and pyroxene with some olivine.
Description:   Coarse, “salt and pepper”: dark pyroxene and light andesine.
Description:   Coarse-grained, with microcline, biotite and horblende phenocrysts.
Description:   Samples of Intrusive and Extrusive Igneous Rocks
Description:   Classic, very coarse-grained igneous texture.
Description:   Medium-grained with biotite.
Description:   Gray andesite with large, blocky hornblende phenocrysts.
Description:   Shiny black volcanic glass showing conchoidal fracture and some spherulites.
Description:   Dark gray, composed mostly of pyroxene and olivine.
Description:   Light gray, with flow structure.
Description:   Classic, dark; from the Columbia Plateau.
Description:   Fine to medium-grained with biotite.
Description:   Gray-to-brown basaltic, with over 50% vesicles.
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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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