The color of uranophane is bright butter yellow while cuprosklodowskite is dark green and sklodowskite is a bronze to golden yellow. Uranophane forms interesting specimens and fine specimens are sought after by collectors of rare uranium minerals. Remember, this is a radioactive mineral and should be stored away from other minerals that are affected by radioactivity and human exposure should definitely be limited. Color is usually a butter yellow to bright lemon yellow also amber to brown. Luster is vitreous to silky.
Crystals are transparent to translucent.
Crystal Habits are typically fibrous or acicular tufts, radial aggregates and crusts. Hardness is 2 - 3. Streak is pale yellow. Associated Minerals are uraninite , torbernite , autunite , zeunerite , sklodowskite , cuprosklodowskite and other uranium ore oxidation zone minerals. Radioactive and somewhat fluorescent greenish yellow.