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Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate)

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Big Photo

Herzog Julius smelter (slag locality), Astfeld, Goslar, Harz Mts, Lower Saxony, Germany
© 2004 JBS

Show Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate) Photos (14)



Formula:
Ca[Zn
 
8
(SO
 
4
)
 
2
(OH)
 
12
Cl
 
2
](H
 
2
O)
 
9
System:Trigonal


Structurally related to gordaite. Forms colourless hexagonal plates arranged in rosette-like aggregates.

Cu-bearing pale bluish green varieties are known from a slag locality (Herzog Julius smelter, http://www.mindat.org/loc-6026.html) in the Harz Mts, Germany (U. Kolitsch, unpublished data). They are usually erroneously labeled "namuwite".


Classification of Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate)

IMA status:Not Approved
Explanation of status:Anthropogenic slag phase.
mindat.org URL:http://www.mindat.org/min-29347.html
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Crystallography of Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate)

Crystal System:Trigonal
Class (H-M):3m (3 2/m) - Hexagonal Scalenohedral
Space Group:R3c {R3 2/c}
Cell Parameters:a = 8.3797Å, c = 68.123Å
Ratio:a:c = 1 : 8.13
Unit Cell Volume:V 4142.7 ų
Z:6

Chemical Properties of Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate)

Formula:
Ca[Zn
 
8
(SO
 
4
)
 
2
(OH)
 
12
Cl
 
2
](H
 
2
O)
 
9
All elements listed in formula:Ca, Cl, H, O, S, Zn

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 (Gordaite-related Ca-Zn Sulphate Chloride Hydrate)

Reference List:

- +
Burns, P. C., Roberts, A. C. and Nikischer, A. J. (1998): The crystal structure of Ca[Zn8(SO4)2(OH)12Cl2](H2O)9, a new phase from slag dumps at Val Varenna, Italy. Eur. J. Mineral. 10, 923-930.

Internet Links for Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate)

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    • Localities for Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate)

    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.
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    (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.
    Germany
     
    • Lower Saxony
      • Harz Mts
        • Goslar
          • Astfeld
    		Uwe Kolitsch (SXRD, EDS, optics)
    Italy
     
    • Liguria
      • Genova Province
        • Genova
          • Varenna Valley
    		Burns, P. C., Roberts, A. C. and Nikischer, A. J. (1998): The crystal structure of Ca[Zn8(SO4)2(OH)12Cl2](H2O)9, a new phase from slag dumps at Val Varenna, Italy. Eur. J. Mineral. 10, 923-930.
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