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