{{Short description|Very rare uranium mineral}} {{infobox mineral | name = Meisserite | category = Sulfate mineral | image = | imagesize = | alt = | caption = | formula = Na<sub>5</sub>(UO<sub>2</sub>)(SO<sub>4</sub>)<sub>3</sub>(SO<sub>3</sub>OH)(H<sub>2</sub>O) | IMAsymbol = Mss<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref> | strunz = | dana = | system = Triclinic | class = Pinacoidal ({{overline|1}}) <br/><small>(same H-M symbol)</small> | symmetry = ''P''{{overline|1}} | unit cell = a = 5.32, b = 11.51, <br/>c = 13.56 [Å], α = 102.96°, <br/>β = 97.41°, γ = 91.46° (approximated); Z = 2 | color = Pale green to yellowish-green | colour = | habit = prismatic | twinning = | cleavage = {100} and {001}, fair | fracture = | tenacity = Very brittle | mohs = 2 | luster = Vitreous | streak = Very pale yellow | diaphaneity = Translucent to transparent | gravity = | density = 3.21 (calculated) (approximated) | polish = | opticalprop = Biaxal (-) | refractive = nα=1.51, nβ=1.55, nγ=1.56 (approximated) | birefringence = | pleochroism = Colorless (X), pale yellow (Y), pale greenish-yellow (Z) | 2V = 60<sup>o</sup> | dispersion = Weak | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = 25px Radioactive | references = <ref name="Pl" /><ref name=Mindat /><ref name=HOM>{{cite web|url=http://www.handbookofmineralogy.org/pdfs/meisserite.pdf |title=Meisserite - Handbook of Mineralogy |website=Handbookofmineralogy.org |accessdate=2016-03-10}}</ref> }} '''Meisserite''' is a very rare uranium mineral with the formula Na<sub>5</sub>(UO<sub>2</sub>)(SO<sub>4</sub>)<sub>3</sub>(SO<sub>3</sub>OH)(H<sub>2</sub>O).<ref name="Pl">Plášil, J., Kampf, A.R., Kasatkin, A.V., and Marty, J., Škoda, R., Silva, S., and Čejka, J., 2013. Meisserite, Na<sub>5</sub>(UO<sub>2</sub>)(SO<sub>4</sub>)<sub>3</sub>(SO<sub>3</sub>OH)(H<sub>2</sub>O), a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA. Mineralogical Magazine 77(7), 2975-2978</ref><ref name=Mindat>{{cite web |url=http://www.mindat.org/min-45960.html |title=Belakovskiite: Belakovskiite mineral information and data |website=Mindat.org |accessdate=2016-03-10}}</ref> It is interesting in being a natural uranyl salt with hydrosulfate (hydroxysulfate) anion, a feature shared with belakovskiite.<ref name="Mindat"/> Other chemically related minerals include fermiite, oppenheimerite, natrozippeite and plášilite.<ref>{{cite web|url=http://www.mindat.org/min-46506.html |title=Fermiite: Fermiite mineral information and data |website=Mindat.org |accessdate=2016-03-10}}</ref><ref>{{cite web|url=http://www.mindat.org/min-46514.html |title=Oppenheimerite: Oppenheimerite mineral information and data |website=Mindat.org |accessdate=2016-03-10}}</ref><ref>{{cite web|url=http://www.mindat.org/min-3694.html |title=Natrozippeite: Natrozippeite mineral information and data |website=Mindat.org |accessdate=2016-03-10}}</ref><ref>{{cite web|url=http://www.mindat.org/min-46145.html |title=Plášilite: Plášilite mineral information and data |website=Mindat.org |accessdate=2016-03-10}}</ref> Most of these uranyl sulfate minerals was originally found in the Blue Lizard mine, San Juan County, Utah, USA.<ref>{{cite web|url=http://www.mindat.org/loc-38665.html |title=Blue Lizard Mine, Chocolate Drop, Red Canyon, White Canyon District, San Juan Co., Utah, USA - Mindat.org |website=Mindat.org |accessdate=2016-03-10}}</ref> The mineral is named after Swiss mineralogist Nicolas Meisser.<ref name=HOM />
==Association and origin== Meisserite is associated with other sulfate minerals: belakovskiite, johannite, chalcanthite, copiapite, ferrinatrite, and gypsum.<ref name="Pl" /> It is resulting from post-mining oxidation of the primary uranium mineral - uraninite.<ref name=HOM />
==Crystal structure== The crystal structure of meisserite is unique. The building elements include:<ref name="Pl" /> * pentagonal bipyramids of uranyl groups * SO<sub>4</sub> groups These elements link to form chains. Sodium cations are bonded to oxygen atoms in chains, to hydrosulfate groups and water.
==References== <references/>
Category:Uranium(VI) minerals Category:Sulfate minerals Category:Sodium minerals Category:Triclinic minerals Category:Minerals in space group 2
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