Filters
Igneous Rocks
Rock specimens are useful for studying textures, grain sizes, and other features altered by pressure, temperature, and other natural forces. Different select categories of rock specimens are available for purchase as well, including metamorphic, igneous, and sedimentary rocks. Sets of rock specimens are housed in compartmentalized collection boxes, with descriptions of each specimen printed for easy confirmation of identification. These rock specimens are carefully selected to be the highest quality to provide students with a suitable introduction to earth materials and their characteristics.
Applied Filters
Filters
Ward's® Andesite (Porphyry)
Gray andesite with phenocrysts of felspar and/or hornblende.
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Ward's Science Essentials® Granite
Porphyritic igneous rock containing biotite, feldspar, and hornblende.
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Ward's® Science Essentials® Pegmatite
Pegmatite is igneous rock similar to granite but with larger crystals.
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Ward's Science Essentials® Pumice
Pumice is light colored glassy rock that floats in water.
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Ward's® Gabbro (Hornblende)
Dark gray, with hornblende as the dominant mafic mineral.
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Ward's® Diorite
Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.