4972 Metauranocircite-I, Davier Mine, Bald Mountain District, Lawrence Co., South Dakota, USA

Lemon-yellow highly fluorescent plates on a goethite matrix. Ex Al Wilkins. Width of view 11.5mm. Stack of 35 images (white light), 10 images (longwave UV).

Use the slider on the photo below to compare the white light and UV images. Click here for a higher resolution version.