Sedimentary 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.
Sediment Comparators
Without Glued-On Grains That Wear Off, Chart Stands up to Repeated use.
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Ward's Science Essentials® Sandstone
Red clastic rock composed of sand sized particles and hematite.
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Ward's Science Essentials® Limestone
Limestone is a gray calcium carbonate that will fizz with dilute HCl.
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Ward's Science Essentials® Siltstone
Gray to tan clastic rock made of silt sized particles.
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Ward's Science Essentials® Breccia
Breccia is a sedimentary rock made up of angular rock fragments.
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Ward's Science Essentials® Bituminous Shale
Bituminous rich black shale for hands-on investigations.
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Ward's Science Essentials® Tufa
Carbonate rock formed by the precipitation from water.
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Ward's Science Essentials® Scoria
Scoria is a dark-colored rock formed from lava with a high gas content.
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Ward's Science Essentials® Conglomerate
Conglomerate is a sedimentary rock made up rounded quartz pebbles.
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Ward's® Illite Shale
Green shale which contains approximately 85% Illite. Impurities may include other clay minerals, such as micas and feldspars.
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Ward's® Black Sand
1 pound of black sand packaged in a heat-sealed bag.