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Cobaltzippeite

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Formula:
Co(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O
System:MonoclinicHardness:2
Member of:Zippeite Group
Name:In allusion to its composition, with dominant cobalt, and its relationship to Zippeite.
This page provides mineralogical data about Cobaltzippeite.

Classification of Cobaltzippeite

IMA status:Approved
Nickel-Strunz 10th (pending) edition ID:7.EC.05

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
C : With medium-sized and large cations
Dana 8th edition ID:31.10.4.6

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
10 : Miscellaneous
Hey's CIM Ref.:25.12.2

25 : Sulphates
12 : Sulphates of Co and Ni
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Type Occurrence of Cobaltzippeite

Type Locality:Happy Jack Mine (Blue Dike Mine), Copper Point, White Canyon, White Canyon District, San Juan Co., Utah, USA
Year of Discovery:1976

Physical Properties of Cobaltzippeite

Hardness (Mohs):2
Density (calculated):4.948 g/cm3

Crystallography of Cobaltzippeite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
Space Group Setting:C2/m
Cell Parameters:a = 8.650(4) Å, b = 14.252(9) Å, c = 17.742(10) Å
β = 104.092(19)°
Ratio:a:b:c = 0.607 : 1 : 1.245
Unit Cell Volume:V 2,121.41 ų (Calculated from Unit Cell)

Optical Data of Cobaltzippeite

Type:Biaxial (-)
RI values: nα = 1.747 nβ = 1.779 nγ = 1.840
Maximum Birefringence:δ = 0.093

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v

Chemical Properties of Cobaltzippeite

Formula:
Co(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O
Simplified for copy/paste:Co(UO2)2(SO4)O2·3.5H2O
Essential elements:Co, H, O, S, U
All elements listed in formula:Co, H, O, S, U

Relationship of Cobaltzippeite to other Species

Member of:Zippeite Group
Other Members of Group:

- +
Magnesiozippeite
Mg(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O
Natrozippeite
Na
 
5
(UO
 
2
)
 
8
(SO
 
4
)
 
4
O
 
5
(OH)
 
3
· 12H
 
2
O
Nickelzippeite
Ni(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O (?)
Pseudojohannite
Cu
 
6.5
(UO
 
2
)
 
8
(SO
 
4
)
 
4
O
 
8
(OH)
 
5
· 25H
 
2
O
Sejkoraite-(Y)
Y
 
2
(UO
 
2
)
 
8
(SO
 
4
)
 
4
O
 
6
(OH)
 
2
· 26H
 
2
O
Zinczippeite
Zn(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O
Zippeite
K
 
3
(UO
 
2
)
 
4
(SO
 
4
)
 
2
O
 
3
(OH) · 3H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
7.EC.05Magnesiozippeite
Mg(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O
7.EC.05Nickelzippeite
Ni(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O (?)
7.EC.05Natrozippeite
Na
 
5
(UO
 
2
)
 
8
(SO
 
4
)
 
4
O
 
5
(OH)
 
3
· 12H
 
2
O
7.EC.05Zinczippeite
Zn(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O
7.EC.05Zippeite
K
 
3
(UO
 
2
)
 
4
(SO
 
4
)
 
2
O
 
3
(OH) · 3H
 
2
O
7.EC.10Rabejacite
Ca(UO
 
2
)
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 6H
 
2
O
7.EC.15Marécottite
Mg
 
3
(UO
 
2
)
 
8
(SO
 
4
)
 
4
O
 
6
(OH)
 
2
· 28H
 
2
O
7.EC.15Sejkoraite-(Y)
Y
 
2
(UO
 
2
)
 
8
(SO
 
4
)
 
4
O
 
6
(OH)
 
2
· 26H
 
2
O
7.EC.20Pseudojohannite
Cu
 
6.5
(UO
 
2
)
 
8
(SO
 
4
)
 
4
O
 
8
(OH)
 
5
· 25H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
25.12.1Bieberite
CoSO
 
4
· 7H
 
2
O
25.12.3Aplowite
(Co,Mn,Ni)SO
 
4
· 4H
 
2
O
25.12.4Moorhouseite
(Co,Ni,Mn)SO
 
4
· 6H
 
2
O
25.12.5Retgersite
NiSO
 
4
· 6H
 
2
O
25.12.6Morenosite
NiSO
 
4
· 7H
 
2
O
25.12.7Nickelblödite
Na
 
2
(Ni,Mg)(SO
 
4
)
 
2
· 4H
 
2
O
25.12.8Nickelboussingaultite
(NH
 
4
)
 
2
Ni(SO
 
4
)
 
2
· 6H
 
2
O
25.12.9Nickelzippeite
Ni(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O (?)
25.12.10Dwornikite
(Ni,Fe)SO
 
4
· H
 
2
O
25.12.11Honessite
(Ni
 
1-x
Fe
3+
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
25.12.12Hydrohonessite
(Ni
 
1-x
Fe
3+
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
25.12.13Nickelhexahydrite
(Ni,Mg,Fe)SO
 
4
· 6H
 
2
O

Other Names for Cobaltzippeite

Synonyms:
IMA1971-006
Other Languages:
German:Kobalt-Zippeit
Russian:Кобальтциппеит

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 Cobaltzippeite

Reference List:

- +
Canadian Mineralogist: 14: 429-436.

Burns, P.C., Deely, K.M., and Hayden, L.A. (2003): The crystals chemistry of the Zippeite group. Canadian Mineralogist 41(3), 687-706.

Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist 43, 1839-1894.

Internet Links for Cobaltzippeite

Search Engines:
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  • External Links:
  • Look for Cobaltzippeite on Webmineral
  • Look for Cobaltzippeite on Athena Mineralogy
  • Look for Cobaltzippeite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Cobalt-Zippeite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Search for Cobaltzippeite on Well-Arranged Molecules
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  • Localities for Cobaltzippeite

    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)
      • Karlovy Vary Region
        • Krušné Hory Mtns (Erzgebirge)
    Jakub Plasil
    USA
     
    • Utah
      • Emery Co.
        • San Rafael District (San Rafael Swell)
      • San Juan Co.
        • White Canyon District
          • White Canyon
            • Copper Point
    R&M 53:2 pp 68-71
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