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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® Rhyolite (Pink)

Ward's® Rhyolite (Pink)

Pale pink felsite, with small sanidine phenocrysts.

 
 
Ward's® Basalt (Vesicular)

Ward's® Basalt (Vesicular)

Dark gray with abundant gas pocket vesicles.

 
 
Ward's® Obsidian

Ward's® Obsidian

Shiny black volcanic glass showing conchoidal fracture and some spherulites.

 
 
Ward's® Diorite

Ward's® Diorite

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.