Plášilite, Na(UO2)(SO4)(OH).2H2O, a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F15%3A%230002605" target="_blank" >RIV/00023272:_____/15:#0002605 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.jgeosci.org/content/jgeosci.184_kampf.pdf" target="_blank" >http://www.jgeosci.org/content/jgeosci.184_kampf.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3190/jgeosci.184" target="_blank" >10.3190/jgeosci.184</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Plášilite, Na(UO2)(SO4)(OH).2H2O, a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA

Popis výsledku v původním jazyce

lasilite (IMA 2014-021), Na(UO2)(SO4)(OH). 2H2O, is a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA. The new mineral occurs in and on sandstone matrix in close association with atacamite, blodite, brochantite, calcite, chalcanthite, dickite, gerhardtite, gypsum, hexahydrite, johannite, manganoblodite, natrozippeite and tamarugite. It is a low-temperature, secondary mineral formed by the post-mining weathering of uraninite. Plasilite is monoclinic, with the space group P2(1)/c, and unit cell parameters a = 8.7122(6), b = 13.8368(4), c = 7.0465(2) angstrom, beta = 112.126(8)degrees, V = 786.89(7) angstrom3 and Z = 4. Crystals are long, thin blades, elongated on [001] and flattened on {100}; rarely occur as prisms, also elongated on [001]. Crystals exhibit the forms {100}, {010} and {011}, and are commonly twinned on {100}. Plasilite is greenish yellow, has a white streak and fluoresces bluish white under both long-wave and short-wave UV. It is transparent with vitreous luster. The mineral has a Mohs hardness probably between 2 and 3, brittle tenacity, even fracture and two perfect cleavages, {010} and {001}. The calculated density based on the empirical formula is 3.726 g/cm3. The mineral is optically biaxial (+), with alpha = 1.556(1), beta = 1.581(1) and gamma = 1.608(1) (measured with white light). The measured 2V is 88(1) degrees and the calculated 2V is 89 degrees. Dispersion is moderate, r < v. The mineral is pleochroic with X = nearly colourless, Y = very pale yellow, Z = pale yellow; X < Y < Z. The optical orientation is X = b, Y <^> c = 4 degrees in obtuse beta. The empirical formula of plasilite is Na-0.94(UO2)(S1.01O4)(OH)(H2O)2 (based on 9 O apfu). Prominent features in the Raman spectrum include the symmetric stretching vibrations of the uranyl (UO22+) group and sulfate tetrahedra and the O-H stretching and bending vibrations of the H2O molecules.

Název v anglickém jazyce

Plášilite, Na(UO2)(SO4)(OH).2H2O, a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA

Popis výsledku anglicky

lasilite (IMA 2014-021), Na(UO2)(SO4)(OH). 2H2O, is a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA. The new mineral occurs in and on sandstone matrix in close association with atacamite, blodite, brochantite, calcite, chalcanthite, dickite, gerhardtite, gypsum, hexahydrite, johannite, manganoblodite, natrozippeite and tamarugite. It is a low-temperature, secondary mineral formed by the post-mining weathering of uraninite. Plasilite is monoclinic, with the space group P2(1)/c, and unit cell parameters a = 8.7122(6), b = 13.8368(4), c = 7.0465(2) angstrom, beta = 112.126(8)degrees, V = 786.89(7) angstrom3 and Z = 4. Crystals are long, thin blades, elongated on [001] and flattened on {100}; rarely occur as prisms, also elongated on [001]. Crystals exhibit the forms {100}, {010} and {011}, and are commonly twinned on {100}. Plasilite is greenish yellow, has a white streak and fluoresces bluish white under both long-wave and short-wave UV. It is transparent with vitreous luster. The mineral has a Mohs hardness probably between 2 and 3, brittle tenacity, even fracture and two perfect cleavages, {010} and {001}. The calculated density based on the empirical formula is 3.726 g/cm3. The mineral is optically biaxial (+), with alpha = 1.556(1), beta = 1.581(1) and gamma = 1.608(1) (measured with white light). The measured 2V is 88(1) degrees and the calculated 2V is 89 degrees. Dispersion is moderate, r < v. The mineral is pleochroic with X = nearly colourless, Y = very pale yellow, Z = pale yellow; X < Y < Z. The optical orientation is X = b, Y <^> c = 4 degrees in obtuse beta. The empirical formula of plasilite is Na-0.94(UO2)(S1.01O4)(OH)(H2O)2 (based on 9 O apfu). Prominent features in the Raman spectrum include the symmetric stretching vibrations of the uranyl (UO22+) group and sulfate tetrahedra and the O-H stretching and bending vibrations of the H2O molecules.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Geosciences

ISSN

1802-6222

e-ISSN

—

Svazek periodika

60

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

000348358700001

EID výsledku v databázi Scopus

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