CARBONACEOUS LIMESTONE, S-60L. California.|
Fine to medium fine grained, black with scattered veinlets of white calcite.
Often a smell of methane on freshly broken surface. Will leave carbon residue
when dissolved in acid.
CALICHE, S-60M. Nevada. White to tan.
Desert floor sand, rock, and debris cemented by calcium carbonate.
(Good caliche breccia currently available)
White, pure, school grade.
CORALLINE LIMESTONE, S-60-O. Nevada
Densely arranged, medium grained, gray, crystalline columns of rugose coral in lighter
gray, finer grained matrix. Check.
FUSULINE LIMESTONE, S-60P. Nevada.
Brownish fusulinids to 8mm in fine grain, gray-brown limestone.
Fossils usually lighter color than the groundmass and reasonably discernable
(especially wet). Check.
OUT OF STOCK
PEAT, S-65. Cost A. Michigan. Brown,.
matted, sized pieces. Numerous macro twigs and grass like plant matter. Some
ROCK SALT , S-70.
Utah. Crystalline, medium to coarse grain, colorless to reddish-brown to gray,
due to impurities.
SANDSTONE, S-75. Utah or Arizona.
Medium fine grained, red to light red.
SANDSTONE , S-75A. Utah.
Nearly white to grayish and yellowish white. 1-2mm quartz grains.
Arizona. Coconino. Layered. Shows distinctive depositional features.
Tan to reddish-brown.
Inquire about more sandstones from other locations.
OIL SANDSTONE (TAR SAND), S-75C.
Black, fine grained, oil impregnated sandstone. Fresh surface smells of petroleum.
When exposed to sufficient heat , oil residue is produced.
California. Compact olive-gray, medium fine grained
with occasional carbonaceous material on layered surfaces.