kasolite

{{Infobox mineral|boxbgcolor=#fcba03|image=Kasolite-Malachite-162839.jpg|caption=Kasolite and malachite from Musonoi mine, Democratic Republic of Congo|formula=Pb(UO2)(SiO4) · H2O|IMAsymbol=Kso|strunz=09.AK.15|system=Monoclinic|dana=53.03.01.01|class=Prismatic H-M symbol: 2/m|symmetry=P 21/a|unit cell=596.48|molweight=587.33|color=Reddish orange, yellow, yellow brown, green, gray green|cleavage=Perfect on {001} Good on {010}, {100}|fracture=Uneven|tenacity=Brittle|mohs=4 - 5|luster=Resinous, Greasy|opticalprop=Biaxial (+)|refractive=nα = 1.890 nβ = 1.910 nγ = 1.950|birefringence=0.060|pleochroism=WeakX =Y = Pale yellow Z = Colorless to slightly grayish|2V=Measured: 43°Calculated: 72°|dispersion=Strong|fluorescence=Radioactive|streak=Light brownish yellow|gravity=5.83 - 6.5|density=Measured: 5.83 - 6.5 Calculated: 6.256|diaphaneity=Transparent, translucent, opaque|impurities=As, P, Ba, Fe, Mg, Ca|other=25px Radioactive}}

Kasolite is an uncommon lead uranyl silicate monohydrate mineral. It is an IMA approved mineral, that had been a valid species before the foundation of the association, that had been first described and published in 1921 by Schoep. It is a grandfathered mineral, meaning the name kasolite is still believed to refer to a valid species to this day. The mineral's name originates from its type locality, namely the Shinkolobwe Mine, also known as Kasolo Mine. Kasolite is possibly the lead analogue of the unnamed phase UM1956-02-SiO:CaHU, and it is the only accepted lead-uranium silicate.