Browse Items · University of Arkansas Museum

Agate

Two oval white agate cabochons, all polished. Cut by donor. Part of a polished stones collection.

Black stripped agate. Irregularly-shaped agate stone, all polished, with black concentric rings. Cut by donor. Part of a polished stones collection.

Tags: Geology, Rocks and Minerals

One specimen of light reddish-brown agate with numerous patches of black dendrites.

Tags: Geology, Kansas, North America, Rocks and Minerals, United States

All the samples are contained in one large gar or vial. Those inside are a sand size mix of the mineral and two small vials.

Tags: Geology, Rocks and Minerals

Large specimen of dark purple amethyst quartz crystals.

Tags: Canada, Geology, North America, Ontario, Purple, Rocks and Minerals

Specimen consists of massive anglesite, malachite, quartz and azurite. Azurite also occurs as small crystals filling veins.

Tags: California, Geology, North America, Rocks and Minerals, United States

This specimen is a concentrate of antimony, probably from a smelting operation of some type.

Tags: Australia, Geology, Gray, Rocks and Minerals

One specimen of colorless to white, tetragonal crystals of apophyllite, on a massive amethyst quartz. Collected by A. E. Foote.

Tags: Geology, Mexico, North America, Rocks and Minerals

Part of rosette, polished cross section piece of tan-yellow and brown, on one face, outside is rough, and is a dirty yellow color.

Tags: Brown, Geology, North America, Rocks and Minerals, Texas, United States, Yellow

Two small vial samples.

Tags: Geology, Rocks and Minerals