"WardsSci000478"
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Ward's Science Essentials® Siltstone
Clearance
Gray to tan clastic rock made of silt sized particles.
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Ward's Science Essentials® Gabbro
Clearance
Gabbro is Mafic igneous rock formed deep underground consisting of olivine and pyroxene.
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Ward's Science Essentials® Granite
Clearance
Porphyritic igneous rock containing biotite, feldspar, and hornblende.
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Ward's Science Essentials® Pumice
Clearance
Pumice is light colored glassy rock that floats in water.
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Ward's Science Essentials® Conglomerate
Clearance
Conglomerate is a sedimentary rock made up rounded quartz pebbles.
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Ward's Science Essentials® Pink Marble
Clearance
Pink/grey marble colored metamorphosed carbonate rock.
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Ward's Science Essentials® Gray Slate
Clearance
Gray metamorphosed shale showing "slaty cleavage".
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Ward's Science Essentials® Chert
Clearance
Chert is a microcrystalline, hard, silica mineral.
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Ward's Science Essentials® Scoria
Clearance
Scoria is a dark-colored rock formed from lava with a high gas content.
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Ward's Science Essentials® Obsidian
Clearance
Obsidian is hard black colored, volcanic glass.
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