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Khademite

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Kladno, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

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Formula:
Al[F|SO
 
4
] · 5H
 
2
O
System:Orthorhombic
This page provides mineralogical data about Khademite.

Classification of Khademite

IMA status:Approved
Strunz 8th edition ID:6/D.06-20
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:31.9.11.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
9 : (AB)(XO4)Zq·xH2O
Hey's CIM Ref.:25.6.3

25 : Sulphates
6 : Sulphates of Al and Tl
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Type Occurrence of Khademite

Type Locality:Kavir-e-Sagand, Saghand (Sagand; Saqand), Yazd Province, Iran
Year of Discovery:1973

Crystallography of Khademite

Crystal System:Orthorhombic
Cell Parameters:a = 11.17Å, b = 13.05Å, c = 10.88Å
Ratio:a:b:c = 0.856 : 1 : 0.834
Unit Cell Volume:V 1,585.96 ų (Calculated from Unit Cell)

Optical Data of Khademite

Type:Biaxial (-)
RI values: nα = 1.440 nβ = 1.460 nγ = 1.487
2V:Measured: 68° , Calculated: 84°
Maximum Birefringence:δ = 0.047

Chart 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 Khademite

Formula:
Al[F|SO
 
4
] · 5H
 
2
O
Essential elements:Al, F, H, O, S
All elements listed in formula:Al, F, H, O, S

Relationship of Khademite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.DB.05Aubertite
CuAl[Cl|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.05Magnesioaubertite
(Mg,Cu)Al[Cl|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.05Svyazhinite
(Mg,Mn
2+
 
,Ca)(Al,Fe
3+
 
)[F|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.10Rostite
Al[OH|SO
 
4
] · 5H
 
2
O
7.DB.15Jurbanite
Al[OH|SO
 
4
] · 5H
 
2
O
7.DB.20Minasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.20Orthominasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.20Anorthominasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.25Bobjonesite
(V
4+
 
O)[SO
 
4
] · 3H
 
2
O
7.DB.30Amarantite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 7H
 
2
O
7.DB.30Hohmannite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 8H
 
2
O
7.DB.30Metahohmannite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 4H
 
2
O
7.DB.35Aluminocopiapite
Al
 
2/3
Fe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
7.DB.35Calciocopiapite
CaFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
·10H
 
2
O
7.DB.35Copiapite
Fe
2+
 
Fe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
7.DB.35Cuprocopiapite
CuFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
·20H
 
2
O
7.DB.35Ferricopiapite
Fe
 
5
(SO
 
4
)
 
6
O(OH)·20H
 
2
O
7.DB.35Magnesiocopiapite
MgFe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
7.DB.35Zincocopiapite
ZnFe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 18H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
25.6.1Rostite
Al[OH|SO
 
4
] · 5H
 
2
O
25.6.2Jurbanite
Al[OH|SO
 
4
] · 5H
 
2
O
25.6.4Meta-aluminite
Al
 
2
[(OH)
 
4
|SO
 
4
] · 5H
 
2
O
25.6.5Aluminite
Al
 
2
[(OH)
 
4
|SO
 
4
] · 7H
 
2
O
25.6.6Meta-alunogen
Al
 
2
(SO
 
4
)
 
3
·12H
 
2
O
25.6.7Alunogen
Al
 
2
(SO
 
4
)
 
3
·17H
 
2
O
25.6.8Felsőbányaite
Al
 
4
[(OH)
 
10
|SO
 
4
] · 4H
 
2
O
25.6.9Basaluminite
25.6.10Hydrobasaluminite
Al
 
4
[(OH)
 
10
|SO
 
4
] · 12-36H
 
2
O
25.6.11Zaherite
Al
 
12
[(OH)
 
26
|(SO
 
4
)
 
5
] · 20H
 
2
O
25.6.12Tamarugite
NaAl(SO
 
4
)
 
2
·6H
 
2
O
25.6.13Mendozite
NaAl(SO
 
4
)
 
2
·11H
 
2
O
25.6.14Alum-(Na)
NaAl[SO
 
4
]
 
2
 · 12H
 
2
O
25.6.15Natroalunite
(Na,K)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
25.6.16Kalinite
KAl(SO
 
4
)
 
2
·11H
 
2
O Not confirmed
25.6.17Alum-(K)
KAl[SO
 
4
]
 
2
 · 12H
 
2
O
25.6.18Alunite
KAl
 
3
[(OH)
 
3
|SO
 
4
]
 
2
25.6.19Minamiite
(Na,Ca
 
0.5
,K)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
25.6.20Tschermigite
(NH
 
4
)Al[SO
 
4
]
 
2
 · 12H
 
2
O

Other Names for Khademite

Other Languages:
German:Khademit
Russian:Хадемит
Spanish:Khademita

Other Information

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

References for Khademite

Reference List:American Mineralogist (1981): 66: 1102.

American Mineralogist (1988): 73: 1499.

American Mineralogist (1989): 74: 951.

Bulletin de Mineralogie: 104: 19-22.

Neues Jahrbuch für Mineralogie, Monatshefte (1988): 10: 476-480.

Internet Links for Khademite

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    Localities for Khademite

    Hide Locality List
    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Kladno
          • Libušin
    		No reference listed
      • 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.
    Germany
     
    • Lower Saxony
      • Harz Mts
        • Goslar
          • Rammelsberg
    		No reference listed
    • North Rhine-Westphalia
      • Aachen
        • Alsdorf
    		Kolitsch U., Brandstätter F. - A new salt-inclusion sulphate phase from a burning coal dump - 2007 - 16th Croatian-Slovenian crystallographic meeting page 12
    Hungary
     
    • Nógrád Co.
      • Cserhát Mts.
    		HOM Collection,2006 Geoda - The journal of Hungarian Friends of Minerals
    Iran
     
    • Yazd Province
      • Saghand (Sagand; Saqand)
    		AM 66 (1981), 1102; AM 73 (1988), 1499; AM 74 (1989), 951
    USA
     
    • New Mexico
      • Catron Co.
        • Wilcox District
          • Lone Pine Hill area
    		Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
    Mineral and/or Locality
    Google
     
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 21st Nov 2009 07:03:59