umohoite

{{infobox mineral | name = Umohoite | category = Oxide and Hydroxide | boxwidth = | image = Umohoite1.jpg | imagesize = 260px | alt = | caption = | formula = (UO2)MoO4·2H2O | IMAsymbol = Umo | strunz = | dana = | symmetry = | unit cell = | molweight = | color = Black, blue-black, dark green, orange-red | colour = | habit = | system = Triclinic | twinning = | cleavage = Perfect on {001} | fracture = | tenacity = | mohs = 2 | luster = Vitreous | streak = Blue gray | diaphaneity = Opaque | gravity = | density = 4.53 - 4.66 g/cm3 (Measured) 4.49(3) g/cm3 (Calculated) | polish = | opticalprop = | refractive = nα = 1.660 nβ = 1.831 nγ = 1.915 | birefringence = | pleochroism = | 2V = Measured: 65°, Calculated: 64° | dispersion = | extinction = | length fast/slow = | fluorescence= | absorption = | melt = | fusibility = | diagnostic = | solubility = | other = 25px Radioactive | alteration = | references = }} Umohoite is a rare oxide and hydroxide mineral. The name of this mineral reflects its composition: uranyl (U), molybdate (Mo) and water (). Its chemical formula is (UO2)MoO4·2H2O.

Umohoite's type location is in Marysvale, the mineral was first described by Paul F. Kerr and G. P. Brophy in 1953.