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decavanadates

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Journal Article

Identifying Protonated Decavanadate Polyanions Available to Purchase

Mark A. Cooper, Frank C. Hawthorne, Anthony R. Kampf, John M. Hughes
Published: 01 March 2019
The Canadian Mineralogist (2019) 57 (2): 245–253.
DOI: https://doi.org/10.3749/canmin.1800069
...Mark A. Cooper; Frank C. Hawthorne; Anthony R. Kampf; John M. Hughes Abstract The decavanadate anion, [V 10 O 28 ] 6− , is a common constituent in vanadate minerals and synthetic materials, and both protonated, [H x V 10 O 28 ] (6− x )− , and mixed-valent, [(V 4+ x V 5+ 10− x )O 28 ] (6+ x...
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View PDF for article title, Identifying Protonated <span class="search-highlight">Decavanadate</span> Polyanions
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Journal Article

Trebiskyite, the First Titanium-Decavanadate Mineral Available to Purchase

Travis A. Olds, Anthony R. Kampf, John M. Hughes, Paul M. Adams, Joe Marty
Published: 18 January 2024
The Canadian Journal of Mineralogy and Petrology (2024) 62 (1): 117–132.
DOI: https://doi.org/10.3749/2300034
...Travis A. Olds; Anthony R. Kampf; John M. Hughes; Paul M. Adams; Joe Marty Abstract Trebiskyite, Na 3 Mg 2 [TiV 9 O 28 ]·22H 2 O, from the Pickett Corral mine, Bull Canyon, Montrose County, Colorado, USA, is the first mineral containing essential Ti as a component of a decavanadate polyanion...
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View PDF for article title, Trebiskyite, the First Titanium-<span class="search-highlight">Decavanadate</span> Mineral
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Journal Article

Bonding between the decavanadate polyanion and the interstitial complex in pascoite-family minerals Available to Purchase

Frank C. Hawthorne, John M. Hughes, Mark A. Cooper, Anthony R. Kampf
Published: 04 March 2022
The Canadian Mineralogist (2022) 60 (2): 341–359.
DOI: https://doi.org/10.3749/canmin.2100051
...Frank C. Hawthorne; John M. Hughes; Mark A. Cooper; Anthony R. Kampf ABSTRACT The decavanadate isopolyanion, [V 10 O 28 ] 6– , is a constituent of pascoite-family vanadate minerals and synthetic materials, and both protonated, [H x V 10 O 28 ] (6– x )– , and mixed-valence, [V 4+ x V 5+ 10– x )O 28...
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View PDF for article title, Bonding between the <span class="search-highlight">decavanadate</span> polyanion and the interstitial complex in pascoite-family minerals
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Journal Article

Revision of the Formulae of Wernerbaurite and Schindlerite: Ammonium- Rather Than Hydronium-bearing Decavanadate Minerals Available to Purchase

Anthony R. Kampf, John M. Hughes, Barbara P. Nash, Joe Marty, Mark A. Cooper, Frank C. Hawthorne, Vladimir Y. Karpenko, Leonid A. Pautov, Atali A. Agakhanov
Published: 01 May 2016
The Canadian Mineralogist (2016) 54 (3): 555–558.
DOI: https://doi.org/10.3749/canmin.1500081
..., USA, were described as hydronium-bearing decavanadate minerals with the formulae {[Ca(H 2 O) 7 ] 2 (H 2 O) 2 (H 3 O) 2 }{V 10 O 28 } and {[Na 2 (H 2 O) 10 ](H 3 O) 4 }{V 10 O 28 }, respectively. Because these phases correspond to known synthetic phases with these formulae, the presence of NH 4...
View PDF for article title, Revision of the Formulae of Wernerbaurite and Schindlerite: Ammonium- Rather Than Hydronium-bearing <span class="search-highlight">Decavanadate</span> Minerals
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Charge deficiency of decavanadate units for 18 decavanadate minerals versus the mean calculated bond-valence sum for the 10 V ions in that decavanadate unit (red circles). The charge deficiencies for nashite and bluestreakite (green circles) show their mixed-valence nature.

Charge deficiency of decavanadate units for 18 decavanadate minerals versu... Available to Purchase

Published: 04 March 2022
Fig. 2. Charge deficiency of decavanadate units for 18 decavanadate minerals versus the mean calculated bond-valence sum for the 10 V ions in that decavanadate unit (red circles). The charge deficiencies for nashite and bluestreakite (green circles) show their mixed-valence nature.
Image
Cell volume per decavanadate unit as a function of the number of H2O groups in decavanadate minerals.

Cell volume per decavanadate unit as a function of the number of H 2 O grou... Available to Purchase

Published: 04 March 2022
Fig. 9. Cell volume per decavanadate unit as a function of the number of H 2 O groups in decavanadate minerals.
Journal Article

Determination of V 4+ :V 5+ Ratios in the [V 10 O 28 ] n – Decavanadate Polyanion Available to Purchase

Mark A. Cooper, Frank C. Hawthorne, Anthony R. Kampf, John M. Hughes
Published: 01 March 2019
The Canadian Mineralogist (2019) 57 (2): 235–244.
DOI: https://doi.org/10.3749/canmin.1800065
...Mark A. Cooper; Frank C. Hawthorne; Anthony R. Kampf; John M. Hughes Abstract The decavanadate anion, [V 10 O 28 ] 6− , is a common constituent of vanadate minerals, and both protonated, [H x V 10 O 28 ] (6− x )− , and mixed-valent, [(V 4+ x V 5+ 10− x )O 28 ] (6+ x )− , derivatives also occur...
FIGURES
View PDF for article title, Determination of V 4+ :V 5+ Ratios in the [V 10 O 28 ] n – <span class="search-highlight">Decavanadate</span> Polyanion
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BOND LENGTHS AND VALENCES FOR THE 10 (V 5+ 10 O 28 ) DECAVANADATES Available to Purchase

Published: 01 March 2019
TABLE 1. BOND LENGTHS AND VALENCES FOR THE 10 (V 5+ 10 O 28 ) DECAVANADATES
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BOND-VALENCE SUMS FOR THE V SITES IN MIXED (V 4+ /V 5+ ) DECAVANADATES Available to Purchase

Published: 01 March 2019
TABLE 2. BOND-VALENCE SUMS FOR THE V SITES IN MIXED (V 4+ /V 5+ ) DECAVANADATES
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MISCELLANEOUS INFORMATION FOR 17 PROTONATED DECAVANADATES Available to Purchase

Published: 01 March 2019
TABLE 2. MISCELLANEOUS INFORMATION FOR 17 PROTONATED DECAVANADATES
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Crystal structure of caseyite viewed along [100]. The interstitial H2O groups are white spheres. The doubly protonated decavanadate anion #1 includes the V1–V5 octahedra. The normal decavanadate anion #2 includes the V6–V15 octahedra. The unit cell is shown by dashed lines. (Color online.)

Crystal structure of caseyite viewed along [100]. The interstitial H 2 O gr... Available to Purchase

Published: 01 January 2020
Figure 4. Crystal structure of caseyite viewed along [100]. The interstitial H 2 O groups are white spheres. The doubly protonated decavanadate anion #1 includes the V1–V5 octahedra. The normal decavanadate anion #2 includes the V6–V15 octahedra. The unit cell is shown by dashed lines. (Color
Journal Article

Ammoniolasalite, [(NH 4 ) 2 Mg 2 (H 2 O) 20 ][V 10 O 28 ], A New Decavanadate Species from the Burro Mine, Slick Rock District, Colorado Available to Purchase

Anthony R. Kampf, Barbara P. Nash, Paul M. Adams, Joe Marty, John M. Hughes
Published: 01 November 2018
The Canadian Mineralogist (2018) 56 (6): 859–869.
DOI: https://doi.org/10.3749/canmin.1800051
...Anthony R. Kampf; Barbara P. Nash; Paul M. Adams; Joe Marty; John M. Hughes Abstract Ammoniolasalite, [(NH 4 ) 2 Mg 2 (H 2 O) 20 ][V 10 O 28 ], is a new decavanadate species (IMA2017-094) from the Burro mine, Slick Rock district, San Miguel County, Colorado, USA (38°2′42″N 108°53′23″W). The mineral...
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View PDF for article title, Ammoniolasalite, [(NH 4 ) 2 Mg 2 (H 2 O) 20 ][V 10 O 28 ], A New <span class="search-highlight">Decavanadate</span> Species from the Burro Mine, Slick Rock District, Colorado
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Journal Article

THE C 2 /m DISORDERED STRUCTURE OF PASCOITE, Ca 3 [V 10 O 28 ]·17H 2 O: BONDING BETWEEN STRUCTURAL UNITS AND INTERSTITIAL COMPLEXES IN COMPOUNDS CONTAINING THE [V 10 O 28 ] 6− DECAVANADATE POLYANION Available to Purchase

John M. Hughes, Michael Schindler, Carl A. Francis
Published: 01 August 2005
The Canadian Mineralogist (2005) 43 (4): 1379–1386.
DOI: https://doi.org/10.2113/gscanmin.43.4.1379
... the hydrogen atoms allow us to assign the C 2/ m disordered model to the atomic arrangement. The structural unit, or anionic portion of the atomic arrangement in pascoite, is the decavanadate polyanion (V 10 O 28 ) 6− , similar to the decavanadate group found in hummerite and numerous synthetic vanadates...
FIGURES
View PDF for article title, THE C 2 &#x2F;m DISORDERED STRUCTURE OF PASCOITE, Ca 3 [V 10 O 28 ]·17H 2 O: BONDING BETWEEN STRUCTURAL UNITS AND INTERSTITIAL COMPLEXES IN COMPOUNDS CONTAINING THE [V 10 O 28 ] 6− <span class="search-highlight">DECAVANADATE</span> POLYANION
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Journal Article

WERNERBAURITE, {[Ca(H 2 O) 7 ] 2 (H 2 O) 2 (H 3 O) 2 }{V 10 O 28 }, AND SCHINDLERITE, {[Na 2 (H 2 O) 10 ](H 3 O) 4 }{V 10 O 28 }, THE FIRST HYDRONIUM-BEARING DECAVANADATE MINERALS Available to Purchase

Anthony R. Kampf, John M. Hughes, Joe Marty, Barbara Nash
Published: 01 April 2013
The Canadian Mineralogist (2013) 51 (2): 297–312.
DOI: https://doi.org/10.3749/canmin.51.2.297
... on the basis of 3,440 diffractions with F o > 4σ F . The structural unit is a decavanadate polyanion, (V 10 O 28 ) 6− . The interstitial unit linking the structural units has a composition of {[Ca(H 2 O) 7 ] 2 (H 2 O) 2 (H 3 O) 2 } 6+ , and is formed of an isolated [Ca(H 2 O) 7 ] 2+ polyhedron, a (H 3 O...
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View PDF for article title, WERNERBAURITE, {[Ca(H 2 O) 7 ] 2 (H 2 O) 2 (H 3 O) 2 }{V 10 O 28 }, AND SCHINDLERITE, {[Na 2 (H 2 O) 10 ](H 3 O) 4 }{V 10 O 28 }, THE FIRST HYDRONIUM-BEARING <span class="search-highlight">DECAVANADATE</span> MINERALS
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DECAVANADATE FAMILY OF MINERALS Available to Purchase

Published: 01 November 2018
TABLE 1. DECAVANADATE FAMILY OF MINERALS
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DECAVANADATE FAMILY OF MINERALS Available to Purchase

Published: 01 March 2017
TABLE 1. DECAVANADATE FAMILY OF MINERALS
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RECENTLY CHARACTERIZED DECAVANADATE MINERALS Available to Purchase

Published: 01 March 2019
TABLE 1. RECENTLY CHARACTERIZED DECAVANADATE MINERALS
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The decavanadate cluster in postite.

The decavanadate cluster in postite. Available to Purchase

Published: 01 February 2012
Fig 4 The decavanadate cluster in postite.
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The decavanadate polyanion in gunterite.

The decavanadate polyanion in gunterite. Available to Purchase

Published: 01 October 2011
Fig. 2 The decavanadate polyanion in gunterite.
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The protonated decavanadate polyanion in rakovanite.

The protonated decavanadate polyanion in rakovanite. Available to Purchase

Published: 01 April 2011
F ig . 2. The protonated decavanadate polyanion in rakovanite.