wulfenite

{{Infobox mineral | name = Wulfenite | category = Molybdate mineral | boxwidth = | boxbgcolor =#cd6e35 | boxtextcolor = #fff | image = File:Wulfenite - Red Cloud mine, La Paz Co., Arizona, USA.jpg | imagesize = 260px | caption =Wulfenite from Red Cloud mine, Arizona | formula = PbMoO4 | IMAsymbol = Wul | molweight = | strunz = 7.GA.05 | system = Tetragonal | class = Dipyramidal (4/m) H-M symbol: (4/m) | symmetry = I41/a | unit cell = a = 5.433, c = 12.110 [Å]; Z = 4 | color = Orange-yellow, yellow, honey-yellow, reddish-orange, rarely colorless, grey, brown, olive-green and even black | habit = Thin tabular to pyramidal | twinning = Twins on the [001] common | cleavage = On {011}, distinct; on {001}, {013}, indistinct | fracture = Irregular to sub-conchoidal | tenacity = Brittle | mohs = 3 | luster = Adamantine, resinous | polish = | refractive = nω = 2.405 nε = 2.283 | opticalprop = Uniaxial (−), may be anomalously biaxial | birefringence = δ = 0.122 | dispersion = | pleochroism = Weak; orange and yellow | fluorescence= None | absorption = | streak = White | gravity = 6.5–7.0 | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Transparent to opaque | other = Specimens may be piezoelectric | references = }}

Wulfenite is a lead molybdate mineral with the formula PbMoO4. It often occurs as thin tabular crystals with a bright orange-red to yellow-orange color, sometimes brown, although the color can be highly variable. In its yellow form it is sometimes called "yellow lead ore".