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buddingtonite

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Journal Article
Published: 01 October 2017
American Mineralogist (2017) 102 (10): 2119–2135.
... Korosten pluton. Their late-stage evolution is characterized by the formation of opal-cemented breccia. A polymineralic pseudomorph after beryl within the breccia includes bertrandite (±euclase) + F-muscovite (with tobelite component) + buddingtonite + organic matter (OM) + opal (+ traces of K-feldspar...
FIGURES | View All (13)
Journal Article
Published: 01 January 2007
American Mineralogist (2007) 92 (1): 151–165.
...-feldspar–buddingtonite, muscovite–tobelite series, and quartz. The run products were characterized by electron microprobe, powder X-ray diffraction with Rietveld analysis, and infrared spectroscopy. It can be shown that complete solid solution exists for both series for temperatures at least above 400 °C...
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Journal Article
Published: 01 January 2004
American Mineralogist (2004) 89 (1): 85–93.
...Guy L. Hovis; Daniel Harlov; Matthias Gottschalk Abstract Enthalpies of solution of the NH 4 + -bearing minerals buddingtonite (NH 4 AlSi 3 O 8 feldspar) and tobelite [NH 4 Al 2 (AlSi 3 O 10 ) (OH) 2 mica] have been measured in 20.1 wt% hydrofluoric acid (HF) at 50°C. Utilizing additional HF...
FIGURES | View All (4)
Journal Article
Published: 01 August 1996
European Journal of Mineralogy (1996) 8 (4): 755–766.
Journal Article
Published: 01 February 1993
American Mineralogist (1993) 78 (1-2): 204–209.
...J. H. L. Voncken; H. L. M. Van Roermund; A. M. J. van der Eerden; J. B. H. Jansen; R. C. Erd Abstract Holotype buddingtonite from the Sulphur Bank Quicksilver deposit, Lake County, California, was studied by XRD, IR, STEM, SEM, TGA, DTA and wet chemical analyses. Synthetic anhydrous ammonium...
Journal Article
Published: 01 August 1964
American Mineralogist (1964) 49 (7-8): 831–850.
...Richard C. Erd; Donald E. White; Joseph J. Fahey; Donald E. Lee Abstract Buddingtonite, the first ammonium aluminosilicate found in nature, occurs in Quaternary andesite and older rocks hydrothermally altered by ammonia-bearing hot-spring waters below the water table at the Sulphur Bank quicksilver...
Image
BSE images of <span class="search-highlight">buddingtonite</span> from pseudomorph. ( a ) Euhedral bertrandite (b...
Published: 01 October 2017
Figure 2. BSE images of buddingtonite from pseudomorph. ( a ) Euhedral bertrandite (bert) in a network of F-muscovite (musc) and with albite (alb). Rectangles indicate position of enlarged parts in ( c, e , and f ), respectively. ( b ) Muscovite partly replaced parallel to (001) and in a kink
Image
Spectra of Esquel ammonium-bearing minerals. A. Sample 2b. Ammonium-bearing...
Published: 01 June 2008
F ig . 3. Spectra of Esquel ammonium-bearing minerals. A. Sample 2b. Ammonium-bearing illite. B. Sample 4. Mixture of 60 percent ammonium-bearing jarosite and 40 percent ammonium-bearing illite. C. Sample 4a. Mixture of 80 percent buddingtonite and 20 percent ammonium-bearing illite. D. Sample 5
Image
FTIR spectra of ( a–d ) <span class="search-highlight">buddingtonite</span>, NH 4 -rich muscovite, brown opal, an...
Published: 01 October 2017
◂Figure 8. FTIR spectra of ( a–d ) buddingtonite, NH 4 -rich muscovite, brown opal, and organic matter from the beryl pseudomorph, Volyn. ( a ) Unpolarized FTIR spectra of crystal aggregates of buddingtonite. Spectra are shifted vertically. Lower lines, labeled with ν 1 to ν 4
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( a  and  b ) Chemical variation of <span class="search-highlight">buddingtonite</span>, EMPA. ( a ) (NH 4 ) 2 O ...
Published: 01 October 2017
Figure 3. ( a and b ) Chemical variation of buddingtonite, EMPA. ( a ) (NH 4 ) 2 O varies independently of sum of K 2 O+Na 2 O, indicating the presence of H 3 O + . ( b ) Na 2 O vs. K 2 O shows random scattering of the data. Dots mark analyses with N-determination.
Image
X - r a y mapping and BSE image of aggregate of <span class="search-highlight">buddingtonite</span> crystals (bud...
Published: 01 October 2017
◂Figure 4. X - r a y mapping and BSE image of aggregate of buddingtonite crystals (bud) with characteristic sector zoning. The core zone is depleted in both, K and Na. The first inner zone shows two sectors enriched in K and two poor in K, but no difference in Na within these sectors. The inner
Image
X-ray mapping and BSE image of <span class="search-highlight">buddingtonite</span>-muscovite, together with opal....
Published: 01 October 2017
◂Figure 5. X-ray mapping and BSE image of buddingtonite-muscovite, together with opal. K-mapping shows significant differences in different sectors and zones, N is homogeneously distributed. Na-contents are low and show slightly heterogeneous distributions, however not as strong as K. (Color
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Possible <span class="search-highlight">buddingtonite</span> nucleated syntaxially on detrital K-feldspar as seen...
Published: 07 March 2017
Figure 19. Possible buddingtonite nucleated syntaxially on detrital K-feldspar as seen in X-ray elemental maps. (a) Yellow arrows indicate the small euhedral overgrowths on K-feldspar: 1408.3 m. (b) Yellow arrow indicates a small cement mass between grains of K-feldspar and quartz: 1441.5 m. (c
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Plume signatures defined by the distribution of <span class="search-highlight">buddingtonite</span> (nested grade...
Published: 01 May 2010
Fig. 8 Plume signatures defined by the distribution of buddingtonite (nested grade shells), Sleeper low sulphidation gold system, Nevada.
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Infrared spectrum of <span class="search-highlight">buddingtonite</span> from Galadriel vein. Arrows indicate the...
Published: 01 June 2008
F ig . 4. Infrared spectrum of buddingtonite from Galadriel vein. Arrows indicate the typical ammonium features.
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Lattice parameters for <span class="search-highlight">buddingtonite</span>–K-feldspar solid solutions as a functi...
Published: 01 January 2007
F igure 3. Lattice parameters for buddingtonite–K-feldspar solid solutions as a function of NH 4 -content.
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Comparison of NH 4 -concentrations for <span class="search-highlight">buddingtonite</span>–K-feldspar solid solut...
Published: 01 January 2007
F igure 4. Comparison of NH 4 -concentrations for buddingtonite–K-feldspar solid solutions from EMP and XRD measurements. ( a ) NH 4 -concentrations by EMP results as determined originally. ( b ) NH 4 -concentrations recalculated by normalizing NH 4 +K contents arbitarily to one.
Journal Article
Journal: Economic Geology
Published: 01 June 2008
Economic Geology (2008) 103 (4): 865–869.
...F ig . 3. Spectra of Esquel ammonium-bearing minerals. A. Sample 2b. Ammonium-bearing illite. B. Sample 4. Mixture of 60 percent ammonium-bearing jarosite and 40 percent ammonium-bearing illite. C. Sample 4a. Mixture of 80 percent buddingtonite and 20 percent ammonium-bearing illite. D. Sample 5...
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Journal Article
Journal: Geophysics
Published: 01 September 1991
Geophysics (1991) 56 (9): 1432–1440.
... data permit the discrimination of areas of alunite, buddingtonite, kaolinite, and silicification using color composite images formed from three SWIR bands processed with either the decorrelation stretch or a log residual algorithm. The laboratory spectral features of alunite, kaolinite...
Journal Article
Published: 01 August 1964
American Mineralogist (1964) 49 (7-8): 851–858.
... buddingtonite (Erd et al., 1964); a stability field has not been determined. The small amount of available ammonium restricts the terrestrial occurrence of buddingtonite. 4 12 1963 19 12 1964 Copyright © 1964 by the Mineralogical Society of America 1964 Mineralogical Society of America ...