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Cobaltomenite

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About CobaltomeniteHide

Formula:
CoSeO3 · 2H2O
Colour:
dark red, pink-red
Hardness:
2 - 2½
Crystal System:
Monoclinic
Name:
Named for being the cobalt analogue of chalcomenite.

Classification of CobaltomeniteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.JH.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
H : Selenites without additional anions, with H2O
Dana 7th ed.:
34.2.3.2
34.2.3.2

34 : SELENITES, TELLURITES AND SULFITES
2 : A(XO3)·xH2O
28.1.12

28 : Selenites, Selenates, Tellurites, and Tellurates
1 : Selenites

Physical Properties of CobaltomeniteHide

Colour:
dark red, pink-red
Streak:
dark pink
Hardness:
2 - 2½ on Mohs scale
Cleavage:
None Observed

Optical Data of CobaltomeniteHide

Type:
Biaxial (-)
RI values:
nα = 1.681 nβ = 1.728 nγ = 1.769
2V:
Measured: 83° , Calculated: 82°
Max Birefringence:
δ = 0.088
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
Calculated

Chemical Properties of CobaltomeniteHide

Formula:
CoSeO3 · 2H2O
IMA Formula:
Co(Se4+O3) · 2H2O

Crystallography of CobaltomeniteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 7.64 Å, b = 8.82 Å, c = 6.51 Å
β = 98.6°
Ratio:
a:b:c = 0.866 : 1 : 0.738
Unit Cell V:
433.74 ų (Calculated from Unit Cell)
Morphology:
Crystals minute.

Type Occurrence of CobaltomeniteHide

Other Language Names for CobaltomeniteHide

Relationship of Cobaltomenite to other SpeciesHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Chalcomenite2 photos of Cobaltomenite associated with Chalcomenite on mindat.org.
Clinochalcomenite2 photos of Cobaltomenite associated with Clinochalcomenite on mindat.org.
Trogtalite1 photo of Cobaltomenite associated with Trogtalite on mindat.org.
Derriksite1 photo of Cobaltomenite associated with Derriksite on mindat.org.
Demesmaekerite1 photo of Cobaltomenite associated with Demesmaekerite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.JH.05ChalcomeniteCuSeO3 · 2H2OOrth. 2 2 2 : P21 21 21
4.JH.10AhlfelditeNi(SeO3) · 2H2OMon. 2/m
4.JH.10ClinochalcomeniteCuSeO3 · 2H2OMon.
4.JH.15MandarinoiteFe3+2(SeO3)3 · 4H2OMon. 2/m : P21/b
4.JH.20OrlandiitePb3(SeO3)(Cl,OH)4 · H2O Tric.
4.JH.25LarisaiteNa(H3O)(UO2)3(SeO3)O2 · 4H2OMon. m : Pm

Related Minerals - Dana Grouping (8th Ed.)Hide

34.2.3.1ClinochalcomeniteCuSeO3 · 2H2OMon.
34.2.3.3AhlfelditeNi(SeO3) · 2H2OMon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.1.1ChalcomeniteCuSeO3 · 2H2OOrth. 2 2 2 : P21 21 21
28.1.2ClinochalcomeniteCuSeO3 · 2H2OMon.
28.1.3FrancisiteCu3Bi(SeO3)2O2ClOrth. mmm (2/m 2/m 2/m) : Pmmn
28.1.4SofiiteZn2(SeO3)Cl2Orth.
28.1.5MolybdomenitePbSeO3Mon.
28.1.6Haynesite(UO2)3(OH)2(SeO3)2 · 5H2OOrth.
28.1.7DerriksiteCu4(UO2)(SeO3)2(OH)6
28.1.8MarthoziteCu2+(UO2)3(SeO3)2O2 · 8H2OOrth.
28.1.9GuilleminiteBa(UO2)3(SeO3)2(OH)4 · 3H2OOrth. mm2 : Pmn21
28.1.10DemesmaekeritePb2Cu5(UO2)2(SeO3)6(OH)6 · 2H2OTric.
28.1.11MandarinoiteFe3+2(SeO3)3 · 4H2OMon. 2/m : P21/b
28.1.13AhlfelditeNi(SeO3) · 2H2OMon. 2/m

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 CobaltomeniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bertrand (1882) Bulletin de la Société française de Minéralogie: 5: 90.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 639.
Canadian Mineralogist (1974): 12: 304-307.
Neues Jahrbuch für Mineralogie, Monatshefte (1990): 353-362.

Internet Links for CobaltomeniteHide

Localities for CobaltomeniteHide

ⓘ - 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.
Argentina (TL)
 
  • Mendoza
    • Luján de Cuyo department
      • Cacheuta
        • Sierra de Cacheuta
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 639; Canadian Mineralogist (1974) : 12: 304.
Ahlfeld Friedrich and Angelelll Vlctorio 1948 Las especies minerales de la Republica Argentina Univ Nac Tucumftn Inst Geologla y Mineria Jujuy Pub no 458 p 47 48 49 50 54 67 69 70 71 120 121 133 134
Bolivia
 
  • Potosí
    • Antonio Quijarro Province
[MinRec 21:133]
    • Chayanta Province
      • Pakajake Canyon (Pacajake Canyon)
Petrov, A., Smith, B., Smith, C. (2001) A Guide to Mineral Localities in Bolivia. Mineralogical Record Vol.32(6), pp. 457-482.
Democratic Republic of the Congo
 
  • Katanga (Shaba)
    • Kolwezi District
      • Kolwezi
Gauthier, G. and Deliens, M. (1999) Cobalt minerals of the Katanga Crescent, Congo. Mineralogical Record 30 (4): 255-273.; Wilson, W.E. (2018) The Musonoi mine, Kolwezi District, Lualaba Province, Democratic Republic of the Congo. Mineralogical Record 49: 236-304.; http://www.champ-hannut.be/fichierpdf/Rev%20SP%202017%20NL.pdf
USA
 
  • Utah
    • Emery Co.
      • San Rafael District (San Rafael Swell)
        • Temple Mountain
Patrick Haynes, FOUR CORNERS MINERAL NEWS in New Mexico Mineral Symposium 2004
    • Grand Co.
      • Thompsons District
        • Yellow Cat District
Van King specimen
        • The Poison Strip
Collected by and in the collection of Brent Thorne.
        • Yellow Cat Mesa
Collected by and in the collection of Brent Thorne.; Kasatkin, A.V., Plášil, J., Marty, J., Belakovskiy, D.I., Lykova, I.S. (2014): Nestolaite, CaSeO3·H2O, a new mineral from the Little Eva mine, Grand County, Utah, USA. Mineralogical Magazine, 78, 497-505.
          • Parco Mine group
Min Rec 26:5 p486
Rick Dalrymple Collection
Chuck Adan specimen. Visual indentification.
    • Piute Co.
UGMS Bull 117 Minerals and Mineral Localities of Utah
Mineral and/or Locality  
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