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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.
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Ward's® Obsidian
Shiny black volcanic glass showing conchoidal fracture and some spherulites.
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Ward's® Andesite (Porphyry)
Gray andesite with phenocrysts of felspar and/or hornblende.
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Ward's® Diorite
Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.
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Ward's Science Essentials® Igneous Rocks Collection
Introduce your students to rocks formed from the cooling of magma and lava.
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Ward's® Snowflake Obsidian (Cristobalite), Student Specimens
Volcanic glass with snowflakes embedded throughout.
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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® Obsidian
Obsidian is hard black colored, volcanic glass.