SEDIMENTARY ROCKS 

 

 

LIMESTONE through SANDSTONE

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)

CHALK, S-60N. 
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 silt
.

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.

SANDSTONE, S-75B. 
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.

GRAYWACKE, S-75D.
California. Compact olive-gray, medium fine grained
with occasional carbonaceous material on layered surfaces.


Return to Index
Geoprime Home Page



Copyright 1997-2012 Geoprime