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® Skarn
White, very dark green, and very dark red to light red granoblastic intergrowth of wollastonite, diopside, and andradite.
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Ward's® GEO-Logic Types of Fossilization Topic Set
Define and compare ways organisms have been preserved.
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Ward's® Amphibolite
Dark, coarse-grained, and composed chiefly of hornblende.
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Ward's® Andesite (Porphyry)
Gray andesite with phenocrysts of felspar and/or hornblende.
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Ward's® Mantle Xenolith
Glossy green dunite (olivine) inclusion in non-genetically related basalt. Average size: 3" x 4".
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Ward's® Cross-bedded Sandstone
Sawn and lacquered slab showing thinly bedded truncated layers in a well-cemented sandstone. Large hand specimen.