Rough piece of orange/brown sphalerite/schalenblende intermixed with white dolomite. The sphalerite fluoresces a nice orange, while the dolomite fluoresces white. The fluorescence is best observed under longwave UV light (or even 405nm blue laser). The dolomite is slightly phosphorescent. There are also patches of a metallic mineral, likely galena.
Fluorescence under longwave UV light.
Normal light.
Fluorescence under longwave UV light.
Normal light.
Fluorescence under longwave UV light.
Normal light.
