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Khademite

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Nasrollah Khadem
Formula:
Al(SO4)F · 5H2O
Colour:
Colorless
Specific Gravity:
1.925
Crystal System:
Orthorhombic
Name:
In honour of Nasrollah Khadem (1918, Tehran, Iran – 5 May 1999, Tehran, Iran) [note: other sources give year of birth as 1910], mining engineer and founder and Director of the Geological Survey of Iran.
Compare also jurbanite and rostite.




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Classification of KhademiteHide

Approved
First Published:
1973
7.DB.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
31.9.11.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
9 : (AB)(XO4)Zq·xH2O
25.6.3

25 : Sulphates
6 : Sulphates of Al and Tl

Physical Properties of KhademiteHide

Transparency:
Transparent
Colour:
Colorless
Streak:
White
Density:
1.925 g/cm3 (Measured)    1.942 g/cm3 (Calculated)

Optical Data of KhademiteHide

Type:
Biaxial (-)
RI values:
nα = 1.440 nβ = 1.460 nγ = 1.487
2V:
Measured: 68° , Calculated: 84°
Max Birefringence:
δ = 0.047
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
dispersion not observed

Chemical Properties of KhademiteHide

Formula:
Al(SO4)F · 5H2O
IMA Formula:
AlSO4F · 5H2O

Crystallography of KhademiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 11.17 Å, b = 13.05 Å, c = 10.88 Å
Ratio:
a:b:c = 0.856 : 1 : 0.834
Unit Cell V:
1,585.96 ų (Calculated from Unit Cell)
Z:
8
Comment:
Space group Pcab.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.247 (100)
4.179 (71)
3.901 (52)
3.351 (16)
2.741 (16)
2.730 (59)
2.030 (21)

Type Occurrence of KhademiteHide

Reference:
Bariand, P., Berthelon, J.P., Cesbron, F., Sadrzadeh, M. (1973) New aluminum sulfate hydrate, khademite of Saghand (Iran). Comptes Rendus des Seances de l'Académie des Sciences, Série C: 277: 1585-1588.

Other Language Names for KhademiteHide

German:Khademit
Simplified Chinese:斜方氟铝矾
Spanish:Khademita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Gypsum2 photos of Khademite associated with Gypsum on mindat.org.
Jurbanite1 photo of Khademite associated with Jurbanite on mindat.org.
Stibnite1 photo of Khademite associated with Stibnite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.DB.05AubertiteCuAl(SO4)2Cl · 14H2OTric. 1
7.DB.05Magnesioaubertite(Mg,Cu)Al(SO4)2Cl · 14H2O
7.DB.05Svyazhinite(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2OTric.
7.DB.10RostiteAl(SO4)(OH) · 5H2OOrth. mmm (2/m 2/m 2/m)
7.DB.15JurbaniteAl(SO4)(OH) · 5H2OMon.
7.DB.20Minasragrite(V4+O)(SO4) · 5H2OMon. 2/m
7.DB.20Orthominasragrite(V4+O)(SO4) · 5H2OOrth. mm2 : Pmn21
7.DB.20Anorthominasragrite(V4+O)(SO4) · 5H2OTric. 1 : P1
7.DB.25Bobjonesite(V4+O)(SO4) · 3H2OMon. 2/m
7.DB.30AmarantiteFe3+2(SO4)2O · 7H2OTric. 1
7.DB.30HohmanniteFe3+2(SO4)2O · 8H2OTric. 1
7.DB.30MetahohmanniteFe3+2(SO4)2O · 4H2OTric. 1 : P1
7.DB.35AluminocopiapiteAl2/3Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CalciocopiapiteCaFe4(SO4)6(OH)2 · 10H2OTric. 1 : P1
7.DB.35CopiapiteFe2+Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CuprocopiapiteCuFe4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35FerricopiapiteFe5(SO4)6O(OH) · 20H2OTric. 1 : P1
7.DB.35MagnesiocopiapiteMgFe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35ZincocopiapiteZnFe3+4(SO4)6(OH)2 · 18H2OTric.

Related Minerals - Dana Grouping (8th Ed.)Hide

31.9.11.2RostiteAl(SO4)(OH) · 5H2OOrth. mmm (2/m 2/m 2/m)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

25.6.1RostiteAl(SO4)(OH) · 5H2OOrth. mmm (2/m 2/m 2/m)
25.6.2JurbaniteAl(SO4)(OH) · 5H2OMon.
25.6.4Meta-aluminiteAl2(SO4)(OH)4 · 5H2O
25.6.5AluminiteAl2(SO4)(OH)4 · 7H2OMon. 2/m : P21/b
25.6.6Meta-alunogenAl2(SO4)3 · 12H2O
25.6.7AlunogenAl2(SO4)3 · 17H2OTric. 1
25.6.8FelsőbányaiteAl4(SO4)(OH)10 · 4H2OMon. 2 : P21
25.6.9BasaluminiteAl4(SO4)(OH)10 · 4H2OHex.
25.6.10HydrobasaluminiteAl4(SO4)(OH)10 · 12-36H2OMon.
25.6.11ZaheriteAl12(SO4)5(OH)26 · 20H2OTric.
25.6.12TamarugiteNaAl(SO4)2 · 6H2OMon. 2/m
25.6.13MendoziteNaAl(SO4)2 · 11H2OMon. 2/m
25.6.14Alum-(Na)NaAl(SO4)2 · 12H2O
25.6.15NatroaluniteNaAl3(SO4)2(OH)6Trig. 3m : R3m
25.6.16KaliniteKAl(SO4)2 · 11H2O Not confirmedMon. 2/m : B2/b
25.6.17Alum-(K)KAl(SO4)2 · 12H2OIso. m3 (2/m 3)
25.6.18AluniteKAl3(SO4)2(OH)6Trig. 3m : R3m
25.6.19Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
25.6.20Tschermigite(NH4)Al(SO4)2 · 12H2OIso. m3 (2/m 3) : Pa3

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for KhademiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bariand, P., Berthelon, J.P., Cesbron, F., Sadrzadeh, M. (1973) New aluminum sulfate hydrate, khademite of Saghand (Iran). Comptes Rendus des Seances de l'Académie des Sciences, Série C: 277: 1585-1588. (in French)
Fleischer, M., Chao, G.Y., Kato, A. (1975) New mineral names. American Mineralogist: 60: 485-489.
Bariand, P., Cesbron, F., Berthelon, J.-P. (1977) Les sulfates de fer de Saghand près de Yazd (Iran). Mémoire Hors-Série de la Société Géologique de France: 8: 77-85.
Bachet, B., Cesbron, F., Chevalier, R. (1981) Structure cristalline de la khadémite Al(SO4)F·5H2O. Bulletin de Minéralogie: 104: 19-22.
Cabri, L.J., Fleischer, M., Pabst, A. (1981) New mineral names. American Mineralogist: 66: 1099-1103.
Williams, S.A. Cesbron, F.P. (1983) Wilcoxite and lannonite, two new fluosulfates from Catron County, New Mexico. Mineral. Mag. 47, 37-40. [includes new analytical data for khademite]
Žáček, V., Povondra, P. (1988) New mineralogical data for rostite from Lisbušín, Central Bohemia, Czechoslovakia. Neues Jahrbuch für Mineralogie, Monatshefte: 10: 476-480.
Cesbron, F., Bayliss, P. (1988) Mineralogical notes: mineral nomenclature: khademite. Mineralogical Magazine: 52: 133-134.
Jambor, J.L., Burke, E.A.J., Ercit, T.S., Grice, J.D. (1988) New mineral names. American Mineralogist: 73: 1492-1499.
Jambor, J.L., Vanko, D.A. (1989) New mineral names. American Mineralogist: 74: 946-951.

Internet Links for KhademiteHide

Localities for KhademiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Chile
 
  • Tarapacá Region
    • El Tamarugal Province
      • Pampa del Tamarugal
Gunnar Farber
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
Zacek, V., Oplustil, S., Mayova, A. & Meyer, F. R. (1995): Die Mineralien von Kladno in Mittelböhmen, Tschechische Republik. Mineralien-Welt 6 (1), 13-30 (in German).
        • Libušin
http://www.handbookofmineralogy.org/pdfs/khademite.pdf
    • Hradec Králové Region
      • Trutnov (Trautenau)
        • Radvanice
Jirásek, J.: Thermal Changes of the Rocks in the Dump Pile of the Kateřina Colliery in Radvanice (Eastern Bohemia). Ostrava: VSB – Technical University of Ostrava, Institute of Geological Engineering - 541, 2001. 69 p.
France
 
  • Occitanie
    • Gard
      • Saint-Laurent-le-Minier
        • Les Malines District
Chollet Pascal collection
Germany
 
  • Lower Saxony
    • Harz
      • Goslar
        • Rammelsberg
No reference listed
  • North Rhine-Westphalia
    • Aachen
      • Alsdorf
Blaß, G. and Strehler, H. (1993): Mineralbildungen in einer durch Selbstentzündung brennenden Bergehalde des Aachener Steinkohlenreviers. Mineralien-Welt 4 (4), 35-42. (in German); U. Kolitsch and F. Brandstätter (2007): A new salt-inclusion sulphate phase from a burning coal dump: crystal-structural, chemical and Raman-spectroscopic characterisation. Oral presentation, 16th Croatian-Slovenian Crystallographic Meeting, Petrčane, Croatia, June 13-17, 2007; abstract in Book of Abstracts, 12; Witzke, T., de Wit, F., Kolitsch, U. and Blaß, G. (2015): Mineralogy of the Burning Anna I Coal Mine Dump, Alsdorf, Germany. Chapter 7, pp. 203-240, in: Stracher, G. B., Prakash, A. and Sokol, E. V.: Coal and Peat Fires: A Global Perspective, Volume 3: Case Studies - Coal Fires, Elsevier, 786 pp.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
Skarpelis, N. and Argyraki, A. (2009): The geology and origin of supergene ores in Lavrion (Attica, Greece). Resource Geology, 59, 1-14.
Hungary
 
  • Nógrád Co.
    • Cserhát Mts
HOM Collection,2006 Geoda - The journal of Hungarian Friends of Minerals
Iran (TL)
 
  • Yazd Province
    • Saghand (Sagand; Saqand)
Bariand, P., Berthelon, J. P., Cesbron, F. & Sadrzadeh, M. (1973): New aluminum sulfate hydrate, khademite of Saghand (Iran). Comptes Rendus des Seances de l'Académie des Sciences, Série C, 277, 1585-1588 (in French).; AM 66 (1981), 1102; AM 73 (1988), 1499; AM 74 (1989), 951; Bariand, P., Cesbron, F. & Berthelon, J. P. (1977): Iron sulfates of Saghand near Yazd (Iran). Memoire Hors-Série de la Société Géologique de France 8, 77-85.
Italy
 
  • Tuscany
    • Siena Province
      • Chiusdino
http://www.handbookofmineralogy.org/pdfs/khademite.pdf ; Collection Elmar Lackner
Nicaragua
 
  • León Department
    • Telica Volcano
Hynek, B. M., McCollom, T. M., Marcucci, E. C., Brugman, K. K., & Rogers, K. L. (2013, March). Assessing environmental controls on acid-sulfate alteration at active volcanoes in Nicaragua: applications to relic hydrothermal systems on mars. In 44th Lunar and Planetary Science Conference, March (pp. 18-22).; Hynek, B. M., McCollom, T. M., Marcucci, E. C., Brugman, K., & Rogers, K. L. (2013). Assessment of environmental controls on acid‐sulfate alteration at active volcanoes in Nicaragua: Applications to relic hydrothermal systems on Mars. Journal of Geophysical Research: Planets, 118(10), 2083-2104.
Romania
 
  • Suceava Co.
    • Suceava district
      • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
http://minerals-of-the-carpathians.eu
Russia
 
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
Tajikistan
 
  • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
    • Zeravshan Range
      • Yagnob River
Mike Scott S105223 from Cureton from Belekovski ID by A Roberts
USA
 
  • New Mexico
    • Catron Co.
      • Wilcox District
        • Lone Pine Hill area
Williams, S. A. & Cesbron, F. P. (1983): Wilcoxite and lannonite, two new fluosulfates from Catron County, New Mexico. Mineralogical Magazine 47, 37-40; Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
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