The majority of the specimen is malachite, pyromorphite and cerussite. The micro wulfenite crystals are closely associated with the brown pyromorphite. Magnification with a loupe or better would be handy. Wulfenite was rare at Browns Prospect. Based on the Mindat article for the location, this specimen is likely to have come from the 2010 collecting period. I originally purchased it shortly after this date. The location is famed for producing quality secondary lead and copper specimens since 1969.