Stibnite is quite rare from Arkansas, but indeed, long ago in the past, there were some small Antimony mines in Sevier county. The Stibnite is present as small, thin, elongated crystals in compact masses. There is an overcoating of yellow material which is likely Cervantine, a common alteration oxide found on Stibnite and listed for the location. The specimen was acquired by the University of Michigan at least 50 years ago. It is unclear to what the A.G.S. on the label refers.
Flaws: None of the Stibnite crystals are termminated.
This mineral is also found in the following galleries: Minerals From the United States | Sulfides and Sulfosalts | Oxides and Hydroxides | Minerals Priced Between 50 and 99 Dollars