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uramphite

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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
...Vladislav V. Gurzhiy; Anatoly V. Kasatkin; Nikita V. Chukanov; Jakub Plášil Abstract Uramphite, (NH 4 )(UO 2 )(PO 4 )·3H 2 O, was found at Beshtau uranium deposit, Northern Caucasus, Russia, as the second world occurrence besides its type locality, Tura-Kavak uranium-coal deposit in Kyrgyzstan...
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View PDF for article title, <span class="search-highlight">Uramphite</span>, (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
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Image
(a) An arrangement of O(N)4 site, occupied by H2O and NH4+ molecules in the structure of uramphite; (b) proposed distribution of H2O and NH4+ molecules by individual positions in a triclinic setting, and (c) proposed model of local distribution of H2O and NH4 molecules in the structure of uramphite (triclinic setting). (Color online.)

( a ) An arrangement of O(N)4 site, occupied by H 2 O and NH 4 + ... Available to Purchase

Published: 01 February 2025
Figure 5. ( a ) An arrangement of O(N)4 site, occupied by H 2 O and NH 4 + molecules in the structure of uramphite; ( b ) proposed distribution of H 2 O and NH 4 + molecules by individual positions in a triclinic setting, and ( c ) proposed model of local distribution of H
Image
(a) Yellow to orange uramphite crust on matrix. Sample 5.7 × 2.7 × 2.6 cm; (b) same sample under UV light; (c) close-up of (a), showing tabular crystals composing the crust. FOV: 3 mm; (d) cross sections of uramphite tabular crystals (white) on chamosite (Chm) and albite-microcline-quartz (Ab+Mcc+Qz) matrix. SEM (BSE) image. Photos (a–c) by Maria Milshina, (d) by Anatoly Kasatkin. (Color online.)

( a ) Yellow to orange uramphite crust on matrix. Sample 5.7 × 2.7 × 2.6 cm... Available to Purchase

Published: 01 February 2025
Figure 2. ( a ) Yellow to orange uramphite crust on matrix. Sample 5.7 × 2.7 × 2.6 cm; ( b ) same sample under UV light; ( c ) close-up of ( a ), showing tabular crystals composing the crust. FOV: 3 mm; ( d ) cross sections of uramphite tabular crystals (white) on chamosite (Chm) and albite
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Unwrapped precession images of the (a) hk0 and (b) h0l reciprocal lattice planes of the structure of uramphite.

Unwrapped precession images of the ( a ) hk 0 and ( b ) h 0 l reciprocal... Available to Purchase

Published: 01 February 2025
Figure 7. Unwrapped precession images of the ( a ) hk 0 and ( b ) h 0 l reciprocal lattice planes of the structure of uramphite.
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Beshtau uranium deposit, type locality where uramphite samples were collected. Photo by Dmitry N. Tsebro, September 2022. (Color online.)

Beshtau uranium deposit, type locality where uramphite samples were collect... Available to Purchase

Published: 01 February 2025
Figure 1. Beshtau uranium deposit, type locality where uramphite samples were collected. Photo by Dmitry N. Tsebro, September 2022. (Color online.)
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IR absorption spectra of (a) uramphite from Beshtau and (b) uramarsite holotype sample, [(NH4)1.15(H3O)0.72Na0.09]Σ1.96(UO2)2.02[(AsO4)1.22(PO4)0.78]Σ2.00·6.09H2O, from the Bota-Burum uranium deposit, Kazakhstan (Sidorenko et al. 2007).

IR absorption spectra of ( a ) uramphite from Beshtau and ( b ) uramarsite ... Available to Purchase

Published: 01 February 2025
Figure 3. IR absorption spectra of ( a ) uramphite from Beshtau and ( b ) uramarsite holotype sample, [(NH 4 ) 1.15 (H 3 O) 0.72 Na 0.09 ] Σ1.96 (UO 2 ) 2.02 [(AsO 4 ) 1.22 (PO 4 ) 0.78 ] Σ2.00 ·6.09H 2 O, from the Bota-Burum uranium deposit, Kazakhstan ( Sidorenko et al. 2007 ).
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Crystal structure of uramphite: (a) the structure projected along the [010]; (b) polyhedral representation of the uranyl phosphate layer projected along [001]; and (c) its black-and-white graph. Legend: U polyhedra = yellow; P tetrahedra = violet; O atoms = red; N atoms = blue; hydrogen atoms = small white circles; H-bonds = dashed red and blue lines. Thermal ellipsoids are shown at the 50% probability level; black nodes = U atoms; white nodes = P atoms. (Color online.)

Crystal structure of uramphite: ( a ) the structure projected along the [01... Available to Purchase

Published: 01 February 2025
Figure 4. Crystal structure of uramphite: ( a ) the structure projected along the [010]; ( b ) polyhedral representation of the uranyl phosphate layer projected along [001]; and ( c ) its black-and-white graph. Legend: U polyhedra = yellow; P tetrahedra = violet; O atoms = red; N atoms = blue
Image
Uramphite NH4[(UO2)2(PO4)2] solubility and Na-autunite steady state U concentrations.

Uramphite NH 4 [(UO 2 ) 2 (PO 4 ) 2 ] solubility and Na-autunite steady sta... Available to Purchase

Published: 01 January 2006
F igure 9. Uramphite NH 4 [(UO 2 ) 2 (PO 4 ) 2 ] solubility and Na-autunite steady state U concentrations.
Journal Article

Effects of pH, temperature, and aqueous organic material on the dissolution kinetics of meta-autunite minerals, (Na, Ca) 2−1 [(UO 2 )(PO 4 )] 2 · 3H 2 O Available to Purchase

Dawn M. Wellman, Jonathan P. Icenhower, Amy P. Gamerdinger, Steven W. Forrester
Published: 01 January 2006
American Mineralogist (2006) 91 (1): 143–158.
DOI: https://doi.org/10.2138/am.2006.1807
...F igure 9. Uramphite NH 4 [(UO 2 ) 2 (PO 4 ) 2 ] solubility and Na-autunite steady state U concentrations. ...
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View PDF for article title, Effects of pH, temperature, and aqueous organic material on the dissolution kinetics of meta-autunite minerals, (Na, Ca) 2−1 [(UO 2 )(PO 4 )] 2 · 3H 2 O
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Journal Article

Studies of the torbernite minerals (III): role of the interlayer oxonium, potassium, and ammonium ions, and water molecules Available to Purchase

Malcolm Ross, H. T. Evans, Jr.
Published: 01 February 1965
American Mineralogist (1965) 50 (1-2): 1–12.
... 4 ) ·3H 2 O (meta-ankoleite) and H 3 O(UO 2 PO 4 )·3H 2 O, NH 4 (UO 2 AsO 4 )·3H 2 O and troegerite, and NH 4 (UO 2 PO 4 )·3H 2 O (uramphite) and H 3 O(UO 2 PO 4 )·3H 2 O. These series are expressed by the formula A 1 – y ( H 3 O ) y ( UO 2 XO 4 ) ⋅ 3 H 2 O where A=K + or NH 4 + , and X = As or P...
View PDF for article title, Studies of the torbernite minerals (III): role of the interlayer oxonium, potassium, and ammonium ions, and water molecules
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Journal Article

THE CRYSTAL STRUCTURES OF X (NpO 2 )(PO 4 )(H 2 O) 3 ( X = K + , Na + , Rb + , NH 4 + ) AND THEIR RELATIONSHIP TO THE AUTUNITE GROUP Available to Purchase

Tori Z. Forbes, Peter C. Burns
Published: 01 June 2007
The Canadian Mineralogist (2007) 45 (3): 471–477.
DOI: https://doi.org/10.2113/gscanmin.45.3.471
.... , Isobe , H. & Sato , T. ( 1997 ): Mobility of uranium during weathering . Am. Mineral . 82 , 888 – 899 . Nekrasova , Z.A. ( 1957 ): Hydrous phosphate of uranium and ammonium (uramphite) – NH 4 (UO 2 )(PO 4 )·3H 2 O . Atomnaya Energ., Voprosy Geol. Urana, Suppl . 6 , 67...
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View PDF for article title, THE CRYSTAL STRUCTURES OF X (NpO 2 )(PO 4 )(H 2 O) 3 ( X = K + , Na + , Rb + , NH 4 + ) AND THEIR RELATIONSHIP TO THE AUTUNITE GROUP
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Journal Article

MONOVALENT CATIONS IN STRUCTURES OF THE META-AUTUNITE GROUP Available to Purchase

Andrew J. Locock, Peter C. Burns, M. John M. Duke, Theodore M. Flynn
Published: 01 August 2004
The Canadian Mineralogist (2004) 42 (4): 973–996.
DOI: https://doi.org/10.2113/gscanmin.42.4.973
... 0.5 )[(UO 2 )(AsO 4 )](H 2 O) 2.5–3(?) , and uramphite NH 4 [(UO 2 )(PO 4 )](H 2 O) 3 . Further synthetic compounds of this group include Li + , Rb + , Cs + , Ag + , and Tl + end-members. Methods of synthesis have been presented by many investigators, including Fairchild (1929) , Ross (1955...
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View PDF for article title, MONOVALENT CATIONS IN STRUCTURES OF THE META-AUTUNITE GROUP
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Journal Article

Fungi, Rocks, and Minerals Available to Purchase

Geoffrey M. Gadd
Journal: Elements
Published: 01 June 2017
Elements (2017) 13 (3): 171–176.
DOI: https://doi.org/10.2113/gselements.13.3.171
... [Pb 5 (PO 4 ) 3 Cl] results in lead oxalate formation ( Sayer et al. 1999 ). Many fungi are also capable of uranium oxide solubilization and can form secondary uranium phosphate minerals of the meta-autunite group: uramphite and/or chernikovite ( Fomina et al. 2007 ). Fungi may also liberate...
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Journal Article

Bacterially enhanced dissolution of meta-autunite Available to Purchase

Christina M. Smeaton, Christopher G. Weisener, Peter C. Burns, Brian J. Fryer, David A. Fowle
Published: 01 November 2008
American Mineralogist (2008) 93 (11-12): 1858–1864.
DOI: https://doi.org/10.2138/am.2008.2836
... uranyl (VI) phosphate (uramphite) by the thermophilic gram-positive bacterium Thermoterrabacterium ferrireducens to a U(IV) phosphate, ningyoite ( Khijniak et al. 2005 ). There remains a dearth of research examining the microbial impact on the weathering of U phosphate minerals. In the present...
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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
..., metaswitzerite, monazite-(Sm), newberyite, paulkellerite, plumbogummite, przhevalskite, rhabdophane-(La), roscherite, stercorite, triangulite, tristramite, uramphite, vochtenite, wilhelmvierlingite, xanthoxenite, xiangjiangite and zairite. Aheylite, aldermanite, ardealite, artsmithite, arupite...
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Journal Article

THE APPLICATION OF HRTEM TECHNIQUES AND NANOSIMS TO CHEMICALLY AND ISOTOPICALLY CHARACTERIZE GEOBACTER SULFURREDUCENS SURFACES Available to Purchase

Mostafa Fayek, Satoshi Utsunomiya, Susan M. Pfiffner, David C. White, Lee R. Riciputi, Rodney C. Ewing, Lawrence M. Anovitz, Frank J. Stadermann
Published: 01 October 2005
The Canadian Mineralogist (2005) 43 (5): 1631–1641.
DOI: https://doi.org/10.2113/gscanmin.43.5.1631
... ). For example, XRD analysis of a heat-dried biomass showed that the uranyl-loaded samples contain crystalline ammonia uranyl phosphate ( Andres et al. 1993 ), which has a crystal structure similar to the naturally occurring mineral uramphite ( Markovic et al. 1988 ). However, it is not clear whether...
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View PDF for article title, THE APPLICATION OF HRTEM TECHNIQUES AND NANOSIMS TO CHEMICALLY AND ISOTOPICALLY CHARACTERIZE GEOBACTER SULFURREDUCENS SURFACES
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Journal Article

Application of Neutron Powder-Diffraction to Mineral Structures Available to Purchase

Karsten Knorr, Wulf Depmeier
Published: 01 January 2006
Reviews in Mineralogy and Geochemistry (2006) 63 (1): 99–111.
DOI: https://doi.org/10.2138/rmg.2006.63.5
.... The structure is tetragonal ( a = 6.99379(2) Å and c = 17.78397(7) Å) and isostructural with the analogous arsenate, the mineral abernathyite. A phase transition is observed at about 270 K. Other examples of uranium minerals studied with neutrons are uramphite (ND 4 )(UO 2 )(PO 4 )(D 2 O) 3 ( Fitch...
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New Mineral Names Available to Purchase

Glenn Poirier, T. Scott Ercit, Kimberly T. Tait, Paula C. Piilonen, Ralph Rowe
Published: 01 February 2009
American Mineralogist (2009) 94 (2-3): 399–408.
DOI: https://doi.org/10.2138/am.2009.538
... be twice this value. Poor crystal quality precluded single-crystal studies. The difference between X-ray and optical properties is attributed to microstrain associated with dehydration. The mineral is a member of the meta-autunite group, more specifically the arsenate analog of uramphite. The holotype...
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Journal Article

The Crystal Chemistry of the Phosphate Minerals Available to Purchase

Danielle M.C. Huminicki, Frank C. Hawthorne
Published: 01 January 2002
Reviews in Mineralogy and Geochemistry (2002) 48 (1): 123–253.
DOI: https://doi.org/10.2138/rmg.2002.48.5
... 4 ) 2 (OH)O](H 2 O) 6.5 Saléeite [6] Cu 2+ (H 2 O) 4 [(UO 2 )(PO 4 )] 2 (H 2 O) 4 Dewindite [8] Pb 2+ 2 [11] Pb 2+ (H 2 O) 11 [(UO 2 ) 3 (PO 4 ) 2 (OH)O] 2 (H 2 O) 1 Uramphite (NH 4 ) 2 [(UO 2 )(PO 4 )] 2 (H 2 O) 6 Francoisite(−Nd) [9] Nd(H 2 O) 5 [(UO 2 ) 3 (PO 4 ) 2 (OH)O](H...
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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
...) 3 meta-ankoleite P 4/ ncc 6.99 / 90 6.99 / 90 17.78 / 90 1 H 3 O[(UO 2 )(PO 4 )](H 2 O) 3 chernikovite P 4/ ncc 7.00 / 90 7.00 / 90 17.49 / 90 2 NH 4 [(UO 2 )(PO 4 )](H 2 O) 3 uramphite P 4/ ncc 7.03 / 90 7.03 / 90 18.09 / 90 3 Uranyl arsenates with monovalent...
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