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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:   Anorthosite is an intrusive, igneous rock consisting of predominantly plagioclase feldspar.
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Description:   Pyroxenite is ultramafic igneous rock made up of primarily pyroxene minerals.
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Description:   Pegmatite is igneous rock similar to granite but with larger crystals.
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Description:   Gray andesite with large, blocky hornblende phenocrysts.
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Description:   Pumice is light colored glassy rock that floats in water.
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Description:   Grayish black trap rock.
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Description:   Syenite a light-colored rock consisting of feldspars and hornblende.
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Description:   Coarse-grained, with microcline, biotite and horblende phenocrysts.
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Description:   Medium-grained with biotite.
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Description:   Dark gray, with hornblende as the dominant mafic mineral.
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Description:   Scoria is a dark-colored rock formed from lava with a high gas content.
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Description:   Classic, very coarse-grained igneous texture.
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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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