Green fluorite is common here, as are many varieties of quartz. Banded agate, a mineral named for its unusual, undulating stripes, is somewhat unique to this area.
According to the head of the Sierra County Rock and Gem Society (SCRAGS), “most rock hunters come to Sierra County to collect carnelian, amethyst, and sulfides.”
SCRAGS meets monthly at the Geronimo Springs Museum, and coordinates field trips to sites around the county. For more information on rock hounding in Sierra County, visit SCRAGS’ Facebook page or join the group and get out in the field!