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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.

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Ward's® Sedimentary Rock Collection

Ward's® Sedimentary Rock Collection

Represents a Wide Range of Depositional Environments and Rock Textures

 
 
Ward's® Limestone (Gray)

Ward's® Limestone (Gray)

Fine, common limestone; massive, and will fizzle with HCl.

 
 
Ward's® Sandstone (Banded)

Ward's® Sandstone (Banded)

Red, medium, to coarse-grained iron oxide cement; shows hematite bands.

 
 
Ward's® Breccia (Volcanic)

Ward's® Breccia (Volcanic)

Light gray, fine small clasts.

 
 
Ward's® Coal (Lignite)

Ward's® Coal (Lignite)

Brownish black, intermediate stage between peat and bituminous coal.

 
 
Ward's® Coal (Peat)

Ward's® Coal (Peat)

Compact Plant Fiber Masses.

 
 
Ward's® Siltstone

Ward's® Siltstone

Gray to brown mudstone with abundant silt.

 
 
Ward's® Graywacke

Ward's® Graywacke

Gray and poorly sorted, with a gritty texture.

 
 
Ward's® Arkose

Ward's® Arkose

Red-brown to gray, coarse-grained, containing feldspar and mica.

 
 
Shale (Carbonaceous)

Shale (Carbonaceous)

Black, fissile; commonly with carbonized fossil plant impressions.

 
 
Ward's® Limestone (Travertine)

Ward's® Limestone (Travertine)

Earthy, porous calcareous tufa.

 
 
Limestone (Coquina)

Limestone (Coquina)

Buff-colored, coarse, detrital limestone, with cemented shell fragments.

 
 
Ward's® Limestone (Shell)

Ward's® Limestone (Shell)

Buff, coarse, crystalline “Austin Marble” with shell casts and molds.

 
 
Ward's® Limestone (Encrinal)

Ward's® Limestone (Encrinal)

Gray with line crinoid columnal fragments.

 
 
Ward's® Limestone (Chalk)

Ward's® Limestone (Chalk)

Light gray, earthy.

 
 
Ward's® Limestone (Oolitic)

Ward's® Limestone (Oolitic)

Gray to buff, with numerous ooliths and fossil fragments.