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Igneous Rock Specimens


32  results were found
Specimens

Specimens are available for use in a wide variety of organic and inorganic testing procedures. Organic samples can be utilized for dissection purposes or studying whole preserved or life specimens, with practical examples in cellular biology or the internal structures of whole organs and complex multicellular systems. Rock specimens are useful for studying textures, grain sizes, and other features brought about by pressure, temperature, and other natural forces, offering a glimpse into the Earth’s geological history.


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Description:   Medium-grained with biotite.
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Description:   Grayish black trap rock.
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Description:   Porphyritic igneous rock containing biotite, feldspar, and hornblende.
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Description:   Obsidian is hard black colored, volcanic glass.
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Description:   Fine to medium-grained with biotite.
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Description:   Classic, dark; from the Columbia Plateau.
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Description:   Introduce your students to Gray Andesite with large phenocrysts of hornblende.
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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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Description:   Glassy; most specimens float in water.
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Description:   Gabbro is Mafic igneous rock formed deep underground consisting of olivine and pyroxene.
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Description:   Dark gray with abundant gas pocket vesicles.
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Catalog Number: (470346-970)

Description:   Volcanic glass with snowflakes embedded throughout.
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Description:   Pale pink felsite, with small sanidine phenocrysts.
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Description:   Abundant small black phenocrysts in a gray to brown matrix.
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Catalog Number: (470026-142)

Description:   Banded volcanic glass.
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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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