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WardsSci000450
Description:
Dark gray with abundant gas pocket vesicles.
Description:
Coarse-grained plagioclase and pyroxene with some olivine.
Description:
Dark gray, with hornblende as the dominant mafic mineral.
Description:
Rhyolite is a pale, pink felsic rock with lower density than most igneous rocks.
Description:
Pyroxenite is ultramafic igneous rock made up of primarily pyroxene minerals.
Description:
Coarse-grained, with microcline, biotite and horblende phenocrysts.
Description:
Syenite a light-colored rock consisting of feldspars and hornblende.
Description:
Medium-grained with biotite.
Description:
Scoria is a dark-colored rock formed from lava with a high gas content.
Description:
Pegmatite is igneous rock similar to granite but with larger crystals.
Description:
Anorthosite is an intrusive, igneous rock consisting of predominantly plagioclase feldspar.
Description:
Abundant small black phenocrysts in a gray to brown matrix.
Description:
Classic, dark; from the Columbia Plateau.
Description:
Obsidian is hard black colored, volcanic glass.
Catalog Number:
(470346-970)
Description:
Volcanic glass with snowflakes embedded throughout.
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 is still displayed and you need assistance, please call us at 1-800-962-2660.
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