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Cobaltzippeite

Formula:
Co
 
2
(UO
 
2
)
 
6
(SO
 
4
)
 
3
(OH)
 
10
·16H
 
2
O
System:OrthorhombicHardness:2
Name:In allusion to its composition, with dominant cobalt, and its relationship to Zippeite.


Zippeite Group.

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

Crystallography of Cobaltzippeite

Crystal System:Orthorhombic

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
 
2
(UO
 
2
)
 
6
(SO
 
4
)
 
3
(OH)
 
10
·16H
 
2
O
Essential elements:Co, H, O, S, U
All elements listed in formula:Co, H, O, S, U

Relationship of Cobaltzippeite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.EC.05Magnesiozippeite
Mg(UO
 
2
)
 
2
(SO
 
4
)(OH)
 
4
·1.5H
 
2
O
7.EC.05Nickelzippeite
Ni
 
2
(UO
 
2
)
 
6
(SO
 
4
)
 
3
(OH)
 
10
·16H
 
2
O
7.EC.05Natrozippeite
Na
 
4
(UO
 
2
)
 
6
[(OH)
 
10
|(SO
 
4
)
 
3
] · 4H
 
2
O
7.EC.05Zinczippeite
Zn
 
2
(UO
 
2
)
 
6
(SO
 
4
)
 
3
(OH)
 
10
·16H
 
2
O
7.EC.05Zippeite
K
 
4
(UO
 
2
)
 
6
[(OH)
 
10
|(SO
 
4
)
 
3
] · 4H
 
2
O
7.EC.10Rabejacite
Ca(UO
 
2
)
 
4
(SO
 
4
)
 
2
(OH)
 
6
 · 6H
 
2
O
7.EC.15Marécottite
(H
 
3
O)
 
8
Mg
 
3
(UO
 
2
)
 
4
[O
 
3
|OH|(SO
 
4
)
 
2
]
 
2
 · 10H
 
2
O
7.EC.20Pseudojohannite
Cu
 
6.5
(UO
 
2
)
 
8
[O
 
8
|(OH)
 
5
|(SO
 
4
)
 
4
] · 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
 
2
(UO
 
2
)
 
6
(SO
 
4
)
 
3
(OH)
 
10
·16H
 
2
O
25.12.10Dwornikite
(Ni,Fe)SO
 
4
·H
 
2
O
25.12.11Honessite
Ni
 
6
Fe
3+
2
[(OH)
 
16
|SO
 
4
] · 4H
 
2
O
25.12.12Hydrohonessite
Ni
 
6
Fe
3+
2
[(OH)
 
16
|SO
 
4
] · 7H
 
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. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Articles/Blogs about Cobaltzippeite

Internet Links for Cobaltzippeite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Cobaltzippeite in the Natural History Museum (London) online catalogue
  • Cobalt-Zippeite details from Handbook of Mineralogy (PDF)
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    Localities for Cobaltzippeite

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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.
    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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