barite rose - teaching set of barite roses from the Garber Sandstone near Noble, east of Norman, Oklahoma

Barite roses formed when barite precipitated from groundwater and crystallized in pore spaces in the Permian Garber Sandstone.  

The source of the barite is undetermined, but may have an origin in groundwater rich in barium and reduced sulfur (sulfide). As the groundwater migrated upward along fractures and porous layers in the Garber Sandstone, it reached aerated areas where the sulfate was oxidized to form sulfate. Barite, barium sulfate, was then precipitated. Barite is insoluble in water. These crystals contain sand grains that are hematite-stained, imparting the reddish color to the roses.

Teaching set of small to medium barite roses, with a density that is surprising to students. The photos are representative of what we ship. The photos show five roses, but each set has six.

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