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lermontovite

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Journal Article

THE ORIGIN AND ZONING OF HYPOGENE AND SUPERGENE Fe–Mn–Mg–Sc–U–REE PHOSPHATE MINERALIZATION FROM THE NEWLY DISCOVERED TRUTZHOFMÜHLE APLITE, HAGENDORF PEGMATITE PROVINCE, GERMANY Available to Purchase

Harald G. Dill, Frank Melcher, Axel Gerdes, Berthold Weber
Published: 01 October 2008
The Canadian Mineralogist (2008) 46 (5): 1131–1157.
DOI: https://doi.org/10.3749/canmin.46.5.1131
..., vivianite manganifère, et lermontovite–vyacheslavite (?). Les complexes contenant le fluor et le phosphate ont régi la formation des phosphates et des silicates de Sc. Contrairement au cas de la pegmatite de Hagendorf voisine, les assemblages magmatiques et hydrothermaux dans l’aplite THM ne contiennent...
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Journal Article

Beshtauite, (NH 4 ) 2 (UO 2 )(SO 4 ) 2 ·2H 2 O, a new mineral from Mount Beshtau, Northern Caucasus, Russia Available to Purchase

Igor V. Pekov, Sergey V. Krivovichev, Vasiliy O. Yapaskurt, Nikita V. Chukanov, Dmitriy I. Belakovskiy
Published: 01 August 2014
American Mineralogist (2014) 99 (8-9): 1783–1787.
DOI: https://doi.org/10.2138/am.2014.4870
..., and named after the locality. It is associated with rozenite, gypsum, lermontovite, and older marcasite, pyrite, halloysite, and opal. Beshtauite occurs as well-shaped short-prismatic crystals up to 0.1 × 0.15 × 0.2 mm, their clusters and crusts up to 0.5 mm across growing on marcasite. Beshtauite...
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Journal Article

Chemical variability in vyacheslavite, U(PO 4 )(OH): Crystal-chemical implications for hydrous and hydroxylated U 4+ , Ca, and REE phosphates Available to Purchase

Gwladys Steciuk, Radek Škoda, Veronika Dillingerová, Jakub Plášil
Published: 03 January 2022
American Mineralogist (2022) 107 (1): 131–137.
DOI: https://doi.org/10.2138/am-2021-7875
... are known from nature: lermontovite U 4+ (PO 4 )(OH)(H 2 O) ( Melkov et al. 1983 ), and vyacheslavite, U 4+ (PO 4 )(OH) ( Belova et al. 1984 ). These minerals form as products of reduction of U 6+ to U 4+ in the supergene enrichment areas of the oxidation zones of U deposits. Together with the other U 4...
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View PDF for article title, Chemical variability in vyacheslavite, U(PO 4 )(OH): Crystal-chemical implications for hydrous and hydroxylated U 4+ , Ca, and REE phosphates
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Journal Article

Uramphite, (NH 4 )(UO 2 )(PO 4 )·3H 2 O, from the second world occurrence, Beshtau uranium deposit, Northern Caucasus, Russia: Crystal-structure refinement, infrared spectroscopy, and relation to uramarsite Available to Purchase

Vladislav V. Gurzhiy, Anatoly V. Kasatkin, Nikita V. Chukanov, Jakub Plášil
Published: 01 February 2025
American Mineralogist (2025) 110 (2): 319–327.
DOI: https://doi.org/10.2138/am-2024-9313
... and contains diverse secondary uranium mineralization ( Belova and Tseitlin 1959 ; Lavrishchev et al. 2011 ). In particular, the Beshtau deposit is the type locality of two secondary U minerals: lermontovite, U 4+ (PO 4 )·H 2 O ( Melkov 1958 ; Melkov et al. 1983 ) and beshtauite, (NH 4 ) 2 (UO 2 )(SO 4 ) 2...
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Journal Article

Štěpite, U(AsO 3 OH) 2 ·4H 2 O, from Jáchymov, Czech Republic: the first natural arsenate of tetravalent uranium Available to Purchase

J. Plášil, K. Fejfarová, J. Hloušek, R. škoda, M. Novák, J. Sejkora, J. Čejka, M. Dušek, F. Veselovský, P. Ondruš, J. Majzlan, Z. Mrázek
Published: 01 February 2013
Mineralogical Magazine (2013) 77 (1): 137–152.
DOI: https://doi.org/10.1180/minmag.2013.077.1.12
..., U 4+ (UO 2 ) 4 O 6 (OH) 4 (H 2 O) 4 ](H 2 O) 5 ( Burns et al. , 1997 ); vyacheslavite, U 4+ (PO 4 ) (OH)· n H 2 O ( Belova et al. , 1984 ); sedovite, U 4+ (MoO 4 ) 2 ( Skvortsova and Sidorenko, 1965 ); lermontovite, U(PO 4 )(OH)·7H 2 O ( Melkov et al. , 1983 ); ningyoite, U 1– x Ca 1– x REE...
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Journal Article

THE GLADSTONE–DALE COMPATIBILITY OF MINERALS AND ITS USE IN SELECTING MINERAL SPECIES FOR FURTHER STUDY Available to Purchase

Joseph A. Mandarino
Published: 01 October 2007
The Canadian Mineralogist (2007) 45 (5): 1307–1324.
DOI: https://doi.org/10.2113/gscanmin.45.5.1307
..., heterosite, hotsonite, johnsomervilleite, kanonerovite, keckite, kintoreite, kleemanite, kolbeckite, kribergite, lacroixite, lermontovite, lipscombite, ludjibaite, maghagendorfite, mahlmoodite, mantiennéite, meta-ankoleite, metasaléeite, metavariscite, metavauxite, mitryaevaite, morinite, mrázekite...
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Journal Article

CONTINUOUS SOLID-SOLUTION BETWEEN MERCURIAN GIRAUDITE AND HAKITE Available to Purchase

Hans-Jürgen Förster, Dieter Rhede, Gerhard Tischendorf
Published: 01 August 2002
The Canadian Mineralogist (2002) 40 (4): 1161–1170.
DOI: https://doi.org/10.2113/gscanmin.40.4.1161
... . Seeliger , E. & Strunz , H. ( 1965 ): Erzpetrographie der UranMineralien von Wölsendorf. II. Brannerit, Lermontovit (?), Selen und Selenide, Ni-und Bi-Begleitmineralien etc . Neues Jahrb. Mineral., Abh . 103 , 163 – 178 . Simon , G. & Essene , E.J. ( 1996 ): Phase...
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Book Chapter

MINERALOGY AND CRYSTALLOGRAPHY OF URANIUM Available to Purchase

Author(s)
Sergey V. Krivovichev, Jakub Plášil
Book: Uranium: Cradle to Grave
Series: Short Courses
Publisher: Mineralogical Association of Canada
Published: 01 January 2013
DOI: 10.3749/9780921294689.ch03
EISBN: 978-0-921294-68-9
.... , due to the presence of biological remains and activity of sulfate-reducing bacteria, which may lead to the formation of black ‘secondary’ U 4+ minerals such as coffinite, ningyoite, lermontovite, vyacheslavite, etc . Deposition of these minerals associated with the immobilization of U result...
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