Tozour Family's Fluorescent Rocks Chalcedony, Calcite - Sioux Co., Nebraska, across border from Ardmore, SD - Plugin - special page for use of the sView plugin in Internet Explorer or very old versions of Firefox ESR

Chalcedony (SW fl. green, LW fl. tan), Calcite (SW fl., phos. pink), Sioux Co., Nebraska, across border from Ardmore, SD