Fine, common limestone; massive, and will fizzle with HCl.
Red, medium, to coarse-grained iron oxide cement; shows hematite bands.
Light gray, fine small clasts.
Brownish black, intermediate stage between peat and bituminous coal.
Compact Plant Fiber Masses.
Gray to brown mudstone with abundant silt.
Gray and poorly sorted, with a gritty texture.
Red-brown to gray, coarse-grained, containing feldspar and mica.
Black, fissile; commonly with carbonized fossil plant impressions.
4 pounds of limestone chips supplied in a box.
Earthy, porous calcareous tufa.
Buff-colored, coarse, detrital limestone, with cemented shell fragments.
Buff, coarse, crystalline “Austin Marble” with shell casts and molds.
Gray with line crinoid columnal fragments.
Light gray, earthy.
Gray to buff, with numerous ooliths and fossil fragments.
