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![Raman bands (cm −1 ) of <span class="search-highlight">khademite</span> and their assignments. For the sake of co...]()
![Colourless tabular crystals of <span class="search-highlight">khademite</span>, up to 5 mm in size, associated wi...]()
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![(a) Lemon-yellow gurzhiite intermixed with white <span class="search-highlight">khademite</span>; (b) same specim...]()
![The H-bond system around the F atom in <span class="search-highlight">khademite</span> ( a ) and a hypothetical c...]()
![Raman spectrum of <span class="search-highlight">khademite</span> and band positions in the regions 100–1200 cm –...]()
![Bond-valence sums (in valence units) for <span class="search-highlight">khademite</span>. ...]()
![Electron microprobe data of <span class="search-highlight">khademite</span>. Oxide Wt.% ( n = 20) ...]()
![Hydrogen-bond lengths (Å) and angles (°) for <span class="search-highlight">khademite</span>. Donor...]()
![Selected bond distances (Å) in <span class="search-highlight">khademite</span>. Al(1)–Ow(5) 1.8505(7...]()
![The crystal structure of <span class="search-highlight">khademite</span> ( a ), as seen down a ; letters A and...]()
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![Summary of crystal data and parameters describing data collection and refin...]()
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![Sites, fractional atom coordinates and isotropic (*) or equivalent isotropi...]()
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1-20 OF 25 RESULTS FOR
khademite
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Journal Article
Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
Journal: Mineralogical Magazine
Published: 30 June 2020
Mineralogical Magazine (2020) 84 (4): 540–546.
...Daniela Mauro; Cristian Biagioni; Marco Pasero; Federica Zaccarini Abstract Khademite, ideally Al(SO 4 )F(H 2 O) 5 , from the Monte Arsiccio mine, Apuan Alps, Tuscany, Italy, has been characterised through quantitative electron microprobe analysis, micro-Raman spectroscopy and single-crystal X-ray...
FIGURES
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Image
Raman bands (cm −1 ) of khademite and their assignments. For the sake of co...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Table 2. Raman bands (cm −1 ) of khademite and their assignments. For the sake of comparison, spectra of khademite and its (OH)-analogue rostite previously published have been reported. Khademite [1] Khademite* [2] Rostite [3] Khademite [4] Assignments 127, 150, 300, 337
Image
Colourless tabular crystals of khademite, up to 5 mm in size, associated wi...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Fig. 1. Colourless tabular crystals of khademite, up to 5 mm in size, associated with halotrichite (hairy). Monte Arsiccio mine, Apuan Alps, Italy.
Journal Article
Gurzhiite, Al(UO 2 )(SO 4 ) 2 F⋅10H 2 O, a new uranyl sulfate mineral with a chain structure from the Bykogorskoe deposit, Northern Caucasus, Russia
Journal: Mineralogical Magazine
Published: 12 May 2022
Mineralogical Magazine (2022) 86 (3): 412–421.
...-grained aggregates forming veinlets up to 50 cm long in cracks of the brecciated rock. Gurzhiite aggregates are composed of small bladed crystals up to 0.1 mm across. Associated minerals include khademite and quartz. Gurzhiite is pale yellow in crystals, lemon yellow in aggregates, transparent...
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Image
(a) Lemon-yellow gurzhiite intermixed with white khademite; (b) same specim...
in Gurzhiite, Al(UO 2 )(SO 4 ) 2 F⋅10H 2 O, a new uranyl sulfate mineral with a chain structure from the Bykogorskoe deposit, Northern Caucasus, Russia
> Mineralogical Magazine
Published: 12 May 2022
Fig. 4. (a) Lemon-yellow gurzhiite intermixed with white khademite; (b) same specimen under shortwave UV light. Specimen size: 1.4 × 0.8 cm. Specimen No.5756/1, photo: M. Milshina.
Image
The H-bond system around the F atom in khademite ( a ) and a hypothetical c...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Fig. 4. The H-bond system around the F atom in khademite ( a ) and a hypothetical configuration with F replaced by OH ( b ). Same symbols as in Fig. 3 . Bond strengths around the monovalent anion are shown in italics (in vu).
Image
Raman spectrum of khademite and band positions in the regions 100–1200 cm –...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Fig. 2. Raman spectrum of khademite and band positions in the regions 100–1200 cm –1 ( a ) and 2500–3800 cm –1 ( b ); in ( b ) the cumulative curve is shown in green whereas fitted bands are red. The plot of residuals and the R 2 value are also shown.
Image
Bond-valence sums (in valence units) for khademite. ...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Table 7. Bond-valence sums (in valence units) for khademite. Al(1) Al(2) S Σanion H(21) H(22) H(31) H(32) H(41) H(42) H(51) H(52) H(61) H(62) Σanions* O(1) 1.51 1.51 0.25 0.25 2.01 O(2) 1.50 1.50 0.25 0.25 2.00 O(3
Image
Electron microprobe data of khademite. Oxide Wt.% ( n = 20) ...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Table 1. Electron microprobe data of khademite. Oxide Wt.% ( n = 20) Range σ SO 3 35.43 34.05–36.41 0.69 Al 2 O 3 21.27 20.40–22.01 0.44 F 6.92 6.54–7.16 0.20 H 2 O calc * 39.73 Sum 103.35 –O = F –2.92 Total 100.43 *Calculated
Image
Hydrogen-bond lengths (Å) and angles (°) for khademite. Donor...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Table 6. Hydrogen-bond lengths (Å) and angles (°) for khademite. Donor ( D ) D –H Acceptor ( A ) H⋅⋅⋅ A D ⋅⋅⋅ A <( D H A ) Ow(2)–H(21) 0.905(15) O(1) 1.765(15) 2.6696(12) 176.9(18) Ow(2)–H(22) 0.918(15) O(4) 1.745(15) 2.6624(11) 177(2) Ow(3)–H(31
Image
Selected bond distances (Å) in khademite. Al(1)–Ow(5) 1.8505(7...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Table 5. Selected bond distances (Å) in khademite. Al(1)–Ow(5) 1.8505(7) ×2 S–O(4) 1.4714(9) Al(1)–Ow(2) 1.8894(7) ×2 S–O(1) 1.4716(9) Al(1)–Ow(6) 1.8927(8) ×2 S–O(3) 1.4717(8) <Al(1)–O> 1.878 S–O(2) 1.4732(9) <S–O> 1.472 Al(2)–F 1.7324(6) ×2
Image
The crystal structure of khademite ( a ), as seen down a ; letters A and...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Fig. 3. The crystal structure of khademite ( a ), as seen down a ; letters A and B indicate the two different {010} layers. Dashed and dotted blue lines represent F⋅⋅⋅O distances and H⋅⋅⋅O distances shorter than 1.95 Å, respectively. The unit cell is shown as dashed black lines. Polyhedra
Journal Article
Wilcoxite MgAl(SO 4 ) 2 F•17H 2 O, from Rico, Colorado: Occurrence and crystal structure
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 February 2013
The Canadian Mineralogist (2013) 51 (1): 107–117.
... in khademite, Al(SO 4 )F•5H 2 O ( Cesbron & Bayliss 1988 , Bachet et al. 1981 ). Fluorine may also combine with sulfur to form SO 3 F groups, as found in reederite Na 15 Y 2 (CO 3 ) 9 (SO 3 F)Cl ( Grice et al. 1995 ). Reederite has been described from the Poudrette Quarry at Mont St. Hilaire, Quebec...
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Journal Article
MGM volume 84 issue 4 Cover and Back matter
Journal: Mineralogical Magazine
Published: 01 August 2020
Mineralogical Magazine (2020) 84 (4): b1–b2.
... PASERO and FEDERICA ZACCARINI : Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO4)F(H2O)5 540 IAN E. GREY, ERICH KECK, ANTHONY R. KAMPF, COLIN M. MACRAE, JOHN D. CASHION and A. MATT GLENN: Jahnsite-(CaMnZn) from the Hagendorf-Süd pegmatite, Oberpfalz...
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Summary of crystal data and parameters describing data collection and refin...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Table 3. Summary of crystal data and parameters describing data collection and refinement for khademite. Crystal data Structural formula AlSO 4 F(H 2 O) 5 Crystal size (mm) 0.18 × 0.15 × 0.13 Cell setting, space group Orthorhombic, Pcab Temperature (K) 293(2
Journal Article
Mineralogical Society of Great Britain and Ireland
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 December 2020
Elements (2020) 16 (6): 412–413.
... of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO4)F(H2O)5 Uwe Kolitsch, Matthias Weil, Vadim M. Kovrugin, Sergey V. Krivovichev Jahnsite-(CaMnZn) from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, and structural flexibility of jahnsite-group minerals Ian E. Grey...
Journal Article
THE HISTORY OF MINERALOGY AND GEMOLOGY IN IRAN
Journal: Earth Sciences History
Publisher: History of Earth Sciences Society
Published: 01 October 2021
Earth Sciences History (2021) 40 (2): 566–580.
... Ghazvini 1580 Gemology Persian Berberian, 1997 Muhammad Ibn Mansur 1700 Gemology Arabic Zavosh 1969 Khademite is an aluminum sulfate mineral with a formula of AlSO 4 F·5H 2 O which was named in honor of Nasrollah Khadem (1918–1999), the pioneer director of the Geological Survey...
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Sites, fractional atom coordinates and isotropic (*) or equivalent isotropi...
in Crystal-chemistry of sulfates from the Apuan Alps, Tuscany, Italy. VIII. New data on khademite, Al(SO 4 )F(H 2 O) 5
> Mineralogical Magazine
Published: 30 June 2020
Table 4. Sites, fractional atom coordinates and isotropic (*) or equivalent isotropic displacement parameters in khademite. Site x / a y / b z / c U eq (Å 2 ) Al(1) 0 ½ ½ 0.01120(11) Al(2) 0 ½ 0 0.01252(11) S 0.23846(3) 0.24741(2) 0.24697(2
Journal Article
Riotintoite, Al(SO 4 )(OH)·3H 2 O, a New Mineral from La Vendida Copper Mine, Antofagasta Region, Chile
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 September 2016
The Canadian Mineralogist (2016) 54 (5): 1293–1305.
...
(2009)
APEX2 .
Bruker AXS Inc., Madison, Wisconsin, USA, 2009.
Bachet,
B.,
Cesbron,
F.,
&
Chevalier,
R.
(1981)
Structure cristalline de la khademite...
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Journal Article
THE GLADSTONE–DALE COMPATIBILITY OF MINERALS AND ITS USE IN SELECTING MINERAL SPECIES FOR FURTHER STUDY
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 October 2007
The Canadian Mineralogist (2007) 45 (5): 1307–1324.
.... Alumoklyuchevskite, ammonioalunite, ammoniojarosite, boothite, botryogen, boussingaultite, caracolite, chaidamuite, chukhrovite-(Ce), chukhrovite-(Y), creedite, efremovite, fibroferrite, grandreefite, hydronium jarosite, jarosite, johannite, khademite, ktenasite, mammothite, metasideronatrite, misenite, mooreite...
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