White fluorite cubes covered by secondary lead minerals, mostly (?) cerussite. The cerussite is powdery white, but it covers a translucent mineral which is not (or weakly so) fluorescent. Biggest fluorite cubes are between 8 and 10 mm in size. In the matrix there are some shiny galena cubes, only partially visible.
Fluorescence under longwave UV light.
Normal light.
Fluorescence spectrum of cerussite under longwave UV light.
Fluorescence spectrum of fluorite under longwave UV light.
Label from John P. Scully.
