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Chalcedony (SW fl. green, LW fl. tan), Calcite (SW fl., phos. pink)
Sioux County, Nebraska, across border from Ardmore, South Dakota
(shortwave UV)
full size cross-eyed stereo image
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HTML5 Stereo Viewer
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Chalcedony (SW fl. green, LW fl. tan), Calcite (SW fl., phos. pink)
Sioux County, Nebraska, across border from Ardmore, South Dakota
(shortwave UV)
full size cross-eyed stereo imagejpgHTML5 Stereo Viewer