"gray K. Besonson"

Dark gray, with hornblende as the dominant mafic mineral.

White and black bands of quartz, feldspar, and biotite; typical foliation.

Pink and gray bands, with biotite; shows good foliation.

Fine to medium-grained with biotite.

Medium-grained with biotite.

Buff, coarse, crystalline “Austin Marble” with shell casts and molds.

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

Gray-to-brown basaltic, with over 50% vesicles.

Black, fissile; commonly with carbonized fossil plant impressions.

Chlorite-mica with perfect slaty cleavage.

Individual fusulinids. Vial of ten.

Honeycomb coral.

Formalin Preserved

Formalin Preserved

Formalin Preserved

Formalin Preserved