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Igneous Rock Specimens


32  results were found

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Supplier:  Avantor
Description:   Pale pink felsite, with small sanidine phenocrysts.
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Supplier:  Avantor
Description:   Dark gray, with hornblende as the dominant mafic mineral.
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Supplier:  Avantor
Description:   Gray andesite with large, blocky hornblende phenocrysts.
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Supplier:  Avantor
Description:   Coarse, “salt and pepper”: dark pyroxene and light andesine.
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Supplier:  Avantor
Description:   Classic, very coarse-grained igneous texture.
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Supplier:  Avantor
Description:   Diorite is a mix of dark pyroxene and light andesine provides perfect representation of an intermediate igneous rock.
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Supplier:  Avantor
Description:   Pumice is light colored glassy rock that floats in water.
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Supplier:  Avantor
Description:   Introduce your students to Gray Andesite with large phenocrysts of hornblende.
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Supplier:  Avantor
Description:   Obsidian is hard black colored, volcanic glass.
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Supplier:  Avantor
Description:   Fine to medium-grained with biotite.
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Supplier:  Avantor
Description:   Medium-grained with biotite.
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Supplier:  Avantor
Description:   Coarse-grained, with microcline, biotite and horblende phenocrysts.
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Supplier:  Avantor
Description:   Shiny black volcanic glass showing conchoidal fracture and some spherulites.
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Supplier:  Avantor
Description:   Glassy; most specimens float in water.
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Supplier:  Avantor
Description:   Porphyritic igneous rock containing biotite, feldspar, and hornblende.
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Supplier:  Avantor
Description:   Pegmatite is igneous rock similar to granite but with larger crystals.
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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 1-800-932-5000.
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