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Unnamed (NH4-Fe-Na-Cl Sulphate)

Big Photo

Anna Mine, Alsdorf, Aachen, North Rhine-Westphalia, Germany
© Frank de Wit

Formula:
(NH
 
4
,K)
 
4
Fe
 
2
(OH)
 
2
(SO
 
4
)
 
4
·NaCl
System:Tetragonal


Anthropogenic phase that has formed on a burning coal dump. Structurally, an unusual salt inclusion phase (Kolitsch & Brandstätter, 2007).

The Fe analogue of naturally formed (in fumarole) adranosite.

Classification of Unnamed (NH4-Fe-Na-Cl Sulphate)

IMA status:Not Approved
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Crystallography of Unnamed (NH4-Fe-Na-Cl Sulphate)

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:I41/acd {I41/a 2/c 2/d}
Cell Parameters:a = 18.259 (3) Å, c = 11.557 (2) Å
Ratio:a:c = 1 : 0.633
Unit Cell Volume:V 3853 ų
Z:16
Morphology:Acicular.

Chemical Properties of Unnamed (NH4-Fe-Na-Cl Sulphate)

Formula:
(NH
 
4
,K)
 
4
Fe
 
2
(OH)
 
2
(SO
 
4
)
 
4
·NaCl
Idealised Formula:
(NH
 
4
)
 
4
Fe
 
2
(OH)
 
2
(SO
 
4
)
 
4
·NaCl
Essential elements:Cl, Fe, H, N, Na, O, S
All elements listed in formula:Cl, Fe, H, K, N, Na, O, S

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 Unnamed (NH4-Fe-Na-Cl Sulphate)

Reference List:U. Kolitsch and F. Brandstätter (2007): A new salt-inclusion sulphate phase from a burning coal dump: crystal-structural, chemical and Raman-spectroscopic characterisation. 16th Croatian-Slovenian Crystallographic Meeting, Petrčane, Croatia, June 13-17, 2007; Book of Abstracts, 12.

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    Localities for Unnamed (NH4-Fe-Na-Cl Sulphate)

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    Germany
     
    • North Rhine-Westphalia
      • Aachen
        • Alsdorf
    		U. Kolitsch and F. Brandstätter (2007): A new salt-inclusion sulphate phase from a burning coal dump: crystal-structural, chemical and Raman-spectroscopic characterisation. 16th Croatian-Slovenian Crystallographic Meeting, Petrčane, Croatia, June 13-17, 2007; Book of Abstracts, 12.
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