Échantillons rocheux
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.
Ward's® Limestone (Shell)
Buff, coarse, crystalline “Austin Marble” with shell casts and molds.
Expand 3 item
Ward's® Limestone (Oolitic)
Gray to buff, with numerous ooliths and fossil fragments.
Expand 4 item
Ward's® Marble (Coarse White)
Gray to white, coarse crystalline, carbonate rock.
Expand 4 item
Ward's® Obsidian
Shiny black volcanic glass showing conchoidal fracture and some spherulites.
Expand 4 item
Ward's® Schist (Mica)
Foliated biotite, coarse, silvery gray with quartz-feldspar bands.