- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Several techniques useful in the preparation of spores, pollen, hystrichospherids, and similar acid-insoluble microfossils are described. These include oxidation treatments to remove unwanted organic matter; 4 aids in the mechanical separation of organic and mineral matter; and 2 methods for making permanent slides using cover-glass smears. A feature of all of these techniques is that the residues are retained in a water-base medium throughout processing.