"Freeze-Dried Specimens"

Altered Igneous and Sedimentary Rocks are Clearly Represented

Chlorite-bearing.

Foliated biotite, coarse, silvery gray with quartz-feldspar bands.

Quartzite is hard, non-foliated rock formed from metamorphosed quartz sandstones.

Sale

High grade metamorphosed rock showing bands of quartz, feldspar, and biotite.

Sale

Gray metamorphosed shale showing "slaty cleavage".

Light gray, fine-grained, well-foliated, schistose.

Pink/gray coarse carbonate rock.

Dark, coarse-grained, and composed chiefly of hornblende.

Gray to white, coarse crystalline, carbonate rock.