"Ward's Phenomena"

Well-cemented, medium-grained orthoquartzite.

Black, soft; most widely mined.

Light gray, fine small clasts.

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

Dense and massive.

Hematite-cemented quartz; orthoquartzite.

Represents a Wide Range of Depositional Environments and Rock Textures

Green shale which contains approximately 85% Illite. Impurities may include other clay minerals, such as micas and feldspars.

Useful for weathering and erosion, soil formation, porosity and permeability, or other general earth science labs.

1 pound of black sand packaged in a heat-sealed bag.

Introduce your students to rocks formed from deposition of sediment.

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

Soil

Black, fissile; commonly with carbonized fossil plant impressions.

Indicative of Various Sedimentary Formation Processes