Pocket of smithsonite crystals on matrix. On top of the smithsonite there are a few small cerussite crystals. Under longwave UV light both the smithsonite and cerussite fluoresce yellow. Under shortwave UV light, the smithsonite is not fluorescent anymore, but the cerussite keeps a light yellow fluorescence. Most notable under shortwave UV light is a bright blue fluorescence mineral, likely hydrozincite. Under shortwave UV light there is also an unidentified red fluorescent mineral.
Fluorescence under both shortwave and longwave UV light.
Fluorescence under longwave (365nm LED) UV light.
Fluorescence under shortwave UV light.