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About CobaltoblöditeHide

reddish-pink in aggregates
Specific Gravity:
Crystal System:
Member of:
Co-dominant analogue of blödite
This page provides mineralogical data about Cobaltoblödite.

Classification of CobaltoblöditeHide


7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations

Physical Properties of CobaltoblöditeHide

reddish-pink in aggregates
2½ on Mohs scale
None Observed
2.29(2) g/cm3 (Measured)    2.347 g/cm3 (Calculated)

Optical Data of CobaltoblöditeHide

Biaxial (-)
RI values:
nα = 1.498(2) nβ = 1.503(2) nγ = 1.505(2)
Max Birefringence:
δ = 0.007
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of CobaltoblöditeHide

IMA Formula:
Na2Co(SO4)2 · 4H2O

Crystallography of CobaltoblöditeHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 11.147(1) Å, b = 8.268(1) Å, c = 5.5396(7) Å
β = 100.517(11)°
a:b:c = 1.348 : 1 : 0.67
Unit Cell V:
501.97 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
From Type Description.

Type Occurrence of CobaltoblöditeHide

General Appearance of Type Material:
aggregates of anhedral grains up to 60 200 μm forming thin crusts covering areas up to 2×2 cm on the surface of other sulfates.
Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4271/1, and Museum Victoria, Melbourne, Australia, catalogue number M52196
Geological Setting of Type Material:
Blue Lizard mine, Red Canyon, White Canyon District, San Juan County, Utah
Associated Minerals at Type Locality:

Synonyms of CobaltoblöditeHide

Relationship of Cobaltoblödite to other SpeciesHide

Member of:
Other Members of this group:
BlöditeNa2Mg(SO4)2 · 4H2OMon. 2/m
ChangoiteNa2Zn(SO4)2 · 4H2OMon. 2/m : P21/b
ManganoblöditeNa2Mn(SO4)2·4H2O Mon. 2/m : P21/b
NickelblöditeNa2(Ni,Mg)(SO4)2 · 4H2O

Common AssociatesHide

Associated Minerals Based on Photo Data:
Manganoblödite1 photo of Cobaltoblödite associated with Manganoblödite on

Related Minerals - Nickel-Strunz GroupingHide

7.CC.AndychristyitePbCu2+Te6+O5(H2O)Tric. 1 : P1
7.CC.05KrausiteKFe(SO4)2 · H2OMon. 2/m : P21/m
7.CC.10TamarugiteNaAl(SO4)2 · 6H2OMon. 2/m
7.CC.15KaliniteKAl(SO4)2 · 11H2OMon. 2/m : B2/b
7.CC.15MendoziteNaAl(SO4)2 · 11H2OMon. 2/m
7.CC.20Lonecreekite(NH4)Fe3+(SO4)2 · 12H2OIso.
7.CC.20Alum-(K)KAl(SO4)2 · 12H2OIso. m3 (2/m 3) : Pa3
7.CC.20Alum-(Na)NaAl(SO4)2 · 12H2O
7.CC.20Tschermigite(NH4)Al(SO4)2 · 12H2OIso. m3 (2/m 3) : Pa3
7.CC.20LanmuchangiteTl+Al(SO4)2 · 12H2OIso. m3 (2/m 3) : Pa3
7.CC.25VoltaiteK2Fe2+5Fe3+3Al(SO4)12 · 18H2OIso. m3m (4/m 3 2/m) : Fd3c
7.CC.25ZincovoltaiteK2Zn5Fe3+3Al(SO4)12 · 18H2OIso. m3m (4/m 3 2/m) : Fd3c
7.CC.25PertlikiteK2(Fe2+,Mg)2Mg4Fe3+2Al(SO4)12 · 18H2OTet. 4/mmm (4/m 2/m 2/m) : I41/acd
7.CC.25Ammoniomagnesiovoltaite(NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2OIso. m3m (4/m 3 2/m) : Fd3c
7.CC.30KröhnkiteNa2Cu(SO4)2 · 2H2OMon. 2/m : P21/b
7.CC.35FerrinatriteNa3Fe(SO4)3 · 3H2OTrig. 3 : P3
7.CC.40GoldichiteKFe(SO4)2 · 4H2OMon. 2/m : P21/b
7.CC.45LöweiteNa12Mg7(SO4)13 · 15H2OTrig.
7.CC.50BlöditeNa2Mg(SO4)2 · 4H2OMon. 2/m
7.CC.50NickelblöditeNa2(Ni,Mg)(SO4)2 · 4H2O
7.CC.50ChangoiteNa2Zn(SO4)2 · 4H2OMon. 2/m : P21/b
7.CC.55LeoniteK2Mg(SO4)2 · 4H2OMon. 2/m
7.CC.55MereiteriteK2Fe(SO4)2 · 4H2OMon.
7.CC.60Boussingaultite(NH4)2Mg(SO4)2 · 6H2OMon. 2/m : P21/b
7.CC.60CyanochroiteK2Cu(SO4)2 · 6H2OMon. 2/m
7.CC.60Mohrite(NH4)2Fe(SO4)2 · 6H2OMon. 2/m : P21/b
7.CC.60Nickelboussingaultite(NH4)2Ni(SO4)2 · 6H2O
7.CC.60PicromeriteK2Mg(SO4)2 · 6H2OMon. 2/m
7.CC.65PolyhaliteK2Ca2Mg(SO4)4 · 2H2OTric. 1
7.CC.70LeightoniteK2Ca2Cu(SO4)4 · 2H2OTric.
7.CC.75AmarilliteNaFe(SO4)2 · 6H2OMon. 2/m : B2/b
7.CC.80KonyaiteNa2Mg(SO4)2 · 5H2OMon. 2/m : P21/b
7.CC.85WattevilleiteNa2Ca(SO4)2 · 4H2O (?)Orth.

Other InformationHide

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

References for CobaltoblöditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kasatkin, A.V., Nestola, F., Pla´sˇil, J., Marty, J., Belakovskiy, D.I., Agakhanov, A.A., Mills, S.J., Lanza, A., Favaro, M. and Bianchin, S. (2013) Cobaltoblödite, IMA 2012- 059. CNMNC Newsletter No. 15, February 2013, page 5; Mineralogical Magazine, 77, 1-12.
A.V. Kasatkin, F. Nestola, J. Plášil, J. Marty, D.I. Belakovskiy, A.A. Agakhanov, S.J. Mills, D. Pedron, A. Lanza, M. Favaro, S. Bianchin, I.S. Lykova, V. Goliáš, W.D. Birch (2013): Manganoblödite, Na2Mn(SO4)2•4H2O, and cobaltoblödite, Na2Co(S4O)2•4H2O: two new members of the blödite group from the Blue Lizard mine, San Juan County, Utah, USA. Mineral. Mag. 77, 367-383.
Delyana Marinova, Manfred Wildner, Tsvetelina Bancheva, Radostina Stoyanova, Mitko Georgiev, Donka G. Stoilova (2018): Synthesis, structure and properties of blödite-type solid solutions, Na2Co1−xCux(SO4)2·4H2O (0 < x ≤ 0.18), and crystal structure of synthetic kröhnkite, Na2Cu(SO4)2·2H2O. Physics and Chemistry of Minerals 45, 801-817.

Internet Links for CobaltoblöditeHide

Localities for CobaltoblöditeHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Utah
    • San Juan Co.
      • White Canyon District
        • Red Canyon
Kasatkin, A.V., Nestola, F., Pla´sˇil, J., Marty, J., Belakovskiy, D.I., Agakhanov, A.A., Mills, S.J., Lanza, A., Favaro, M. and Bianchin, S. (2013) Cobaltoblödite, IMA 2012- 059. CNMNC Newsletter No. 15, February 2013, page 5; Mineralogical Magazine, 77, 1-12.
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