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.
Ward's® Coal (Lignite)
Supplier: Avantor
Brownish black, intermediate stage between peat and bituminous coal.
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Ward's® Limestone (Encrinal)
Supplier: Avantor
Gray with line crinoid columnal fragments.
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Ward's Science Essentials® Siltstone
Supplier: Avantor
Gray to tan clastic rock made of silt sized particles.
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Ward's® Conglomerate (Quartz)
Supplier: Avantor
Small, rounded pebbles and tightly cemented granules.
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Sediment Comparators
Supplier: Avantor
Without Glued-On Grains That Wear Off, Chart Stands up to Repeated use.
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Ward's® Limestone (Oolitic)
Supplier: Avantor
Gray to buff, with numerous ooliths and fossil fragments.
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Ward's® Siltstone
Supplier: Avantor
Gray to brown mudstone with abundant silt.
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Ward's® Shale (Argillaceous)
Supplier: Avantor
Typical green-gray, fissile, clay-rich.
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Ward's® Sandstone (White)
Supplier: Avantor
Well-cemented, medium-grained orthoquartzite.
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Sedimentary Rock Set of 18
Supplier: Avantor
Includes: six each of conglomerate, sandstone and shale. Set of 18.
Common rocks and minerals for testing and identification studies are 2–3cm each.
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Ward's® Sandstone (Red)
Supplier: Avantor
Hematite-cemented quartz; orthoquartzite.
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Ward's® Breccia (Volcanic)
Supplier: Avantor
Light gray, fine small clasts.
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Ward's® Limestone (Shell)
Supplier: Avantor
Buff, coarse, crystalline “Austin Marble” with shell casts and molds.
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#: 21905-026
Supplier: Kimberly-Clark
#: 32934-080
Supplier: Kimberly-Clark
#: 89039-656
Supplier: VWR International