Další formáty:
BibTeX
LaTeX
RIS
@article{1091371,
author = {Plášil, Jakub and Hloušek, Jan and Veselovský, František and Fejfarová, Karla and Dušek, Michal and Škoda, Radek and Novák, Milan and Čejka, Jiří and Sejkora, Jiří and Ondruš, Petr},
article_number = {2-3},
doi = {http://dx.doi.org/10.2138/am.2012.3976},
keywords = {Adolfpateraite uranyl sulfate crystal structure chemical composition Jáchymov},
language = {eng},
issn = {0003-004X},
journal = {American Mineralogist},
title = {Adolfpateraite, K(UO2)(SO4)(OH)(H2O), a new uranyl sulphate mineral from Jáchymov, Czech Republic.},
volume = {97},
year = {2012}
}
TY - JOUR
ID - 1091371
AU - Plášil, Jakub - Hloušek, Jan - Veselovský, František - Fejfarová, Karla - Dušek, Michal - Škoda, Radek - Novák, Milan - Čejka, Jiří - Sejkora, Jiří - Ondruš, Petr
PY - 2012
TI - Adolfpateraite, K(UO2)(SO4)(OH)(H2O), a new uranyl sulphate mineral from Jáchymov, Czech Republic.
JF - American Mineralogist
VL - 97
IS - 2-3
SP - 447-454
EP - 447-454
SN - 0003004X
KW - Adolfpateraite uranyl sulfate crystal structure chemical composition Jáchymov
N2 - Adolfpateraite, monoclinic K(UO2)(SO4)(OH)(H2O), is a new supergene mineral from the Svornost mine, Jáchymov ore district, Czech Republic. It forms sulfur yellow to greenish yellow crystalline aggregates, up to 2 mm in diameter. Crystals are transparent to translucent with a vitreous luster, without observable cleavage. The streak is pale yellow. The Mohs hardness is ~2. The mineral shows a green fluorescence in long-wave ultraviolet radiation. Adolfpateraite is pleochroic, with alpha = colorless and gamma = yellow (beta could not been examined). It is biaxial, with alfa = 1.597(2), gama = 1.659(2) (beta could not been measured), birefringence 0.062. The empirical chemical formula (mean of 4 electron microprobe point analyses) was calculated based on 8 O apfu and is K0.94(UO2)1.00(SO4)1.02(OH)0.90(H2O)1.00 (water content calculated). The simplified formula is K(UO2)(SO4)(OH)(H2O), requiring K2O 10.70, UO3 64.97, SO3 18.19, H2O 6.14, total 100.00 wt%. Adolfpateraite is monoclinic, space group P21/c, a = 8.0462(1), b = 7.9256(1), c = 11.3206(2) A, beta = 107.726(2), V = 687.65(2) A^3, Z = 4, and Dcalc = 4.24 g/cm3. The five strongest reflections in the X-ray powder diffraction pattern are [dobs in Angstroms (I) (hkl)]: 7.658 (76) (100), 5.386 (100) (002), 5.218 (85) (102), 3.718 (46) (021), 3.700 (37) (202). The crystal structure has been refined from single-crystal X-ray diffraction data to R1 = 0.0166 with GOF = 1.30, based on 1915 observed reflections [Iobs > 3sigma(I)]. The crystal structure consists of chains of uranyl polyhedra extended along [010], with OH located on the shared vertex between the bipyramids. The sulfate tetrahedra decorate the outer side of the chain with bridging bidentate linkages between the uranyl pentagonal bipyramids.
ER -
PLÁŠIL, Jakub, Jan HLOUŠEK, František VESELOVSKÝ, Karla FEJFAROVÁ, Michal DUŠEK, Radek ŠKODA, Milan NOVÁK, Jiří ČEJKA, Jiří SEJKORA a Petr ONDRUŠ. Adolfpateraite, K(UO2)(SO4)(OH)(H2O), a new uranyl sulphate mineral from Jáchymov, Czech Republic. Online. \textit{American Mineralogist}. 2012, roč.~97, 2-3, s.~447-454. ISSN~0003-004X. Dostupné z: https://dx.doi.org/10.2138/am.2012.3976. [citováno 2024-04-23]
|
