"Freeze-Dried+Specimens"

Hemolysis, the rupture of red blood cells, is induced by certain species of streptococcal bacteria that produce extracellular hemolysin.  Observe this phenomenon with this set of 3 non-pathogenic species

Light gray, fine small clasts.

Slaty cleavage; contains hematite.

Brown, earthy, massive; used for yellow pigment.

This specimen block features a real fish skeleton.

Silvery, paragranite and muscovite-rich with medium garnet crystals.

Premium introductory collection features 12 palm-sized specimens that depict the variety of colors and forms found in minerals. Each specimen is numbered and keyed to an ID sheet featuring additional data about each item. Includes an information booklet and a magnifier.

Specimens of the most common U.S. agricultural produce.

Typical green-gray, fissile, clay-rich.

Coal bed leaf impression. Hand specimen.

Dark gray with abundant gas pocket vesicles.

Nearly pure, green crystalline forsterite.

Pure translucent to white, rhombic cleavages, Mohs’ hardness of 3.

Gray to white, coarse crystalline, carbonate rock.

These mounted specimens are a fine supplement to textbook illustrations.

There are 16 specimen blocks in this package