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![Evolution of cell parameters and volume of afghanite with temperature: (a) a cell parameter; (b) c cell parameter; (c) volume. The large square symbol refers to the cell of afghanite after cooling back to RT. Linear regression, confidence (95% level), and prediction intervals are reported for the first two thermal ranges (323 < T < 448 K and 448 < T < 1073 K) as full, dotted, and short dash lines, respectively. (Color online.)]()
![Relative expansion of cell parameters and volume of afghanite.]()
![Evolution of the isotropic displacement parameters of afghanite with temperature.]()
![Evolution of the T-O-T angles of afghanite with temperature: (a) T-O1–8-T; (b) T-O9–16-T. (Color online.)]()
![Magnified 3D view (7–40 °2θ) of the full data set of the 323–1223 K heating cycle of afghanite.]()
![Sulphur 2p X-ray photoelectron spectra of low-sulphide phases: Cubic lazurites (PKH, MB) and hexagonal afghanite (AG) as described in Table 1. Table 4 reports the sulphur species and the peak maxima of the fitted spectra.]()
![Grains of (a) bystrite (yellow, Sample 1) in association with lazurite (deep blue) and calcite (white), and (b) sulfhydrylbystrite (orange, Sample 3) in association with afghanite (pale blue), diopside (dark greyish-green to almost black), plagioclase (yellow to beige), and calcite (white). The fields of view are 15 mm across in both photos.]()
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1-20 OF 45 RESULTS FOR
afghanite
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Journal Article
Thermal behavior of afghanite, an ABABACAC member of the cancrinite group Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 April 2012
American Mineralogist (2012) 97 (4): 630–640.
...Paolo Ballirano; Ferdinando Bosi Abstract Thermal behavior of afghanite, (Na 15 K 5 Ca 11 ) ∑31 [Si 24 Al 24 O 96 ](SO 4 ) 6 Cl 6 , P 31 c , a = 12.7961(7) Å, c = 21.4094(13) Å, an eight-layer member of the cancrinite group, has been investigated by combined electron microprobe analysis, X-ray...
FIGURES
Includes: Supplemental Content
Journal Article
Crystal structure of afghanite, the eight-layer member of the cancrinite-group; evidence for long-range Si, Al ordering Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 February 1997
European Journal of Mineralogy (1997) 9 (1): 21–30.
Journal Article
Afghanite; new occurrences and chemical composition Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 February 1979
The Canadian Mineralogist (1979) 17 (1): 47–52.
Image
Evolution of cell parameters and volume of afghanite with temperature: ( a ... Available to Purchase
in Thermal behavior of afghanite, an ABABACAC member of the cancrinite group
> American Mineralogist
Published: 01 April 2012
Figure 7 Evolution of cell parameters and volume of afghanite with temperature: ( a ) a cell parameter; ( b ) c cell parameter; ( c ) volume. The large square symbol refers to the cell of afghanite after cooling back to RT. Linear regression, confidence (95% level), and prediction intervals
Image
Relative expansion of cell parameters and volume of afghanite. Available to Purchase
in Thermal behavior of afghanite, an ABABACAC member of the cancrinite group
> American Mineralogist
Published: 01 April 2012
Figure 8 Relative expansion of cell parameters and volume of afghanite.
Image
Evolution of the isotropic displacement parameters of afghanite with temper... Available to Purchase
in Thermal behavior of afghanite, an ABABACAC member of the cancrinite group
> American Mineralogist
Published: 01 April 2012
Figure 9 Evolution of the isotropic displacement parameters of afghanite with temperature.
Image
Evolution of the T-O-T angles of afghanite with temperature: ( a ) T-O 1–8 ... Available to Purchase
in Thermal behavior of afghanite, an ABABACAC member of the cancrinite group
> American Mineralogist
Published: 01 April 2012
Figure 10 Evolution of the T-O-T angles of afghanite with temperature: ( a ) T-O 1–8 -T; ( b ) T-O 9–16 -T. (Color online.)
Image
Magnified 3D view (7–40 °2θ) of the full data set of the 323–1223 K heating... Available to Purchase
in Thermal behavior of afghanite, an ABABACAC member of the cancrinite group
> American Mineralogist
Published: 01 April 2012
Figure 1 Magnified 3D view (7–40 °2θ) of the full data set of the 323–1223 K heating cycle of afghanite.
Image
Sulphur 2p X-ray photoelectron spectra of low-sulphide phases: Cubic lazuri... Available to Purchase
in Sulphur speciation in lazurite-type minerals (Na,Ca) 8 [Al 6 Si 6 O 24 ](SO 4 ,S) 2 and their annealing products: a comparative XPS and XAS study
> European Journal of Mineralogy
Published: 01 January 2012
Fig. 1 Sulphur 2p X-ray photoelectron spectra of low-sulphide phases: Cubic lazurites (PKH, MB) and hexagonal afghanite (AG) as described in Table 1 . Table 4 reports the sulphur species and the peak maxima of the fitted spectra.
Image
Grains of (a) bystrite (yellow, Sample 1) in association with lazurite (dee... Available to Purchase
in Bystrite, Na 7 Ca(Al 6 Si 6 O 24 )S 5 2– Cl – : formula redefinition and relationships with other four-layer cancrinite-group minerals
> Mineralogical Magazine
Published: 19 April 2023
Figure 2. Grains of (a) bystrite (yellow, Sample 1) in association with lazurite (deep blue) and calcite (white), and (b) sulfhydrylbystrite (orange, Sample 3) in association with afghanite (pale blue), diopside (dark greyish-green to almost black), plagioclase (yellow to beige), and calcite
Journal Article
THE CRYSTAL STRUCTURE OF FRANZINITE, THE TEN-LAYER MINERAL OF THE CANCRINITE GROUP Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 June 2000
The Canadian Mineralogist (2000) 38 (3): 657–668.
... ]. The Si:Al ratio is equal to 1, and the framework has a perfectly ordered Si,Al distribution, as was found in liottite and afghanite, the 6- and 8-layer cancrinite-like minerals, respectively. The cages host a complex distribution of extra-framework cations (Ca, Na, K), (SO 4 ) 2− anions, and H 2 O molecules...
FIGURES
Journal Article
Enumeration of 4-connected 3-dimensional nets and classification of framework silicates: the infinite set of ABC-6 nets; the Archimedean and σ -related nets Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 August 1981
American Mineralogist (1981) 66 (7-8): 777–788.
...Joseph V. Smith; J. Michael Bennett Abstract Parallel 6-rings are linked by 4-rings into the infinite set of ABC -6 nets, and the 98 simplest nets are enumerated. These include the following types: afghanite, cancrinite, chabazite, erionite, gmelinite, levyne, liottite, losod, offretite, sodalite...
Journal Article
The thermal behaviour of sacrofanite Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 May 2018
European Journal of Mineralogy (2018) 30 (3): 507–514.
...: Ballirano, 2012a ) and afghanite (ABABACAC: Ballirano & Bosi, 2012 ) been investigated. Crystal data, experimental set-up, data collection, and statistical indicators of the Rietveld refinements are reported in Table 1 . A magnified view of the Rietveld plots of the data collected at 823 K...
FIGURES
Journal Article
Modular Microporous Minerals: Cancrinite-Davyne Group and C-S-H Phases Available to Purchase
Publisher: Mineralogical Society of America
Published: 01 January 2005
Reviews in Mineralogy and Geochemistry (2005) 57 (1): 241–290.
... (H 2 O) 1.3 ](K 2 )(Be 6 P 6 O 24 ) bystrite (ABAC) 4 P 31 c 12.855 10.700 2 [(Na,K) 7 Ca](Si 6 Al 6 O 24 )(S2-) 1.5 •H 2 O liottite (ABABAC) 6 P 6̅ 12.87 16.096 3 [(Na,K) 5.3 Ca 2.7 ](Si 6 Al 6 O 24 )(SO 4 ) 1.7 Cl 1.3 afghanite (ABABACAC) 8 P 31 c 12.801...
FIGURES
Journal Article
Marinellite, a new feldspathoid of the cancrinite-sodalite group Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 November 2003
European Journal of Mineralogy (2003) 15 (6): 1019–1027.
... to the “cancrinite group” (i.e. with AB-AB… stacking sequence) may display themselves supercells, as due to ordering of cations and/or anions within the framework. As a consequence of this somewhat ambiguous classification, minerals with complex stacking sequences such as afghanite, bystrite, franzinite, liottite...
FIGURES
Journal Article
Farneseite, a new mineral of the cancrinite - sodalite group with a 14-layer stacking sequence : occurrence and crystal structure Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 November 2005
European Journal of Mineralogy (2005) 17 (6): 839–846.
...: bystryte N = 4, liottite N = 6, afghanite N = 8, franzinite = 10, tounkite and marinellite N = 12, giuseppettite N = 16, sacrofanite N = 28. It is interesting to note that all sequences found so far show stackings with even periods. Rinaldi & Wenk (1979) reported evidence of domains with N larger...
FIGURES
Journal Article
Mid-infrared emission spectroscopy of sulfate and sulfate-bearing minerals Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 January 2007
American Mineralogist (2007) 92 (1): 1–18.
... the samples: afghanite, alunite, anglesite, anhydrite, antlerite, aphthitalite (glaserite), apjohnite, barite, bassanite (hemihydrate), bloedite (blodite), brochantite, burkeite, celestine (celestite), coquimbite/paracoquimbite, creedite, ferricopiapite, glauberite, gypsum, hanksite, hexahydrite, jarosite...
FIGURES
Journal Article
Bystrite, Na 7 Ca(Al 6 Si 6 O 24 )S 5 2– Cl – : formula redefinition and relationships with other four-layer cancrinite-group minerals Available to Purchase
Journal: Mineralogical Magazine
Published: 19 April 2023
Mineralogical Magazine (2023) 87 (3): 455–464.
...Figure 2. Grains of (a) bystrite (yellow, Sample 1) in association with lazurite (deep blue) and calcite (white), and (b) sulfhydrylbystrite (orange, Sample 3) in association with afghanite (pale blue), diopside (dark greyish-green to almost black), plagioclase (yellow to beige), and calcite...
FIGURES
Journal Article
Sulphur speciation in lazurite-type minerals (Na,Ca) 8 [Al 6 Si 6 O 24 ](SO 4 ,S) 2 and their annealing products: a comparative XPS and XAS study Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 January 2012
European Journal of Mineralogy (2012) 24 (1): 133–152.
...Fig. 1 Sulphur 2p X-ray photoelectron spectra of low-sulphide phases: Cubic lazurites (PKH, MB) and hexagonal afghanite (AG) as described in Table 1 . Table 4 reports the sulphur species and the peak maxima of the fitted spectra. ...
FIGURES
Journal Article
New Mineral Names: Hydrous Minerals Free
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 August 2022
American Mineralogist (2022) 107 (8): 1656–1658.
.... , and Pushcharovsky , D.Y. ( 2022 ) Steudelite, (Na 3 ☐)[(K,Na) 17 Ca 7 ]Ca 4 (Al 24 Si 24 O 96 )(SO 3 ) 6 F 6 ·4H 2 O, a new cancrinite-group mineral with afghanite-type framework topology . Physics and Chemistry of Minerals , 49 ( 1 ), 1 – 11 . Favreau , G. , and Galea-Clolus , V. ( 2014...
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