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Metakirchheimerite

A valid IMA mineral species - grandfathered
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00238750014948217296041.jpg
Metakirchheimerite

Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
02368590017055697393097.jpg
Metakirchheimerite

Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
00843570014948217291267.jpg
Metakirchheimerite

Jan Evangelista vein, Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
02806210014947510884540.jpg
Metakirchheimerite

Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
07718630017055339606798.jpg
Metakirchheimerite

Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
03242160014949391998375.jpg
Metakirchheimerite

Jan Evangelista vein, Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
00238750014948217296041.jpg
Metakirchheimerite

Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
07718630017055339606798.jpg
Metakirchheimerite

Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
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About MetakirchheimeriteHide

Formula:
Co(UO2)2(AsO4)2 · 8H2O
Colour:
pale pink, greenish yellow to colorless
Hardness:
2 - 2½
Crystal System:
Triclinic
Name:
For Professor Franz Waldemar Kirchheimer (1 July 1911, Müllheim, Germany – 17 June 1984, Freiburg im Breisgau, Germany), former Director of the Geological Survey of Baden-Württemberg, Germany, geologist, palaeontologist and mining historian, for his contribution on uranium deposits in Baden-Württemberg.
Meta-autunite Group.

The lower hydrate of "kirchheimerite", a non-approved species which contains 12 water molecules per formula unit (Walenta, 1964; Locock et al., 2004).


Unique IdentifiersHide

Mindat ID:
2677
Long-form identifier:
mindat:1:1:2677:8
GUID
(UUID V4):
d9bdd33d-74a3-4076-bd94-2b3092890041

IMA Classification of MetakirchheimeriteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1958
Type description reference:
Walenta, K. (1958) Die sekundaren Uranmineralien des Schwarzwaldes. Jahresheft des Geologischen Landesant Baden-Wurttemberg: 3: 17-51.

Classification of MetakirchheimeriteHide

Strunz-mindat (2024):
8.EB.10

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
Dana 8th ed.:
40.2a.17.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
Hey's CIM Ref.:
20.7.20

20 : Arsenates (also arsenates with phosphate, but without other anions)
7 : Arsenates of U

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
MkiIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of MetakirchheimeriteHide

Colour:
pale pink, greenish yellow to colorless
Streak:
white
Hardness:
2 - 2½ on Mohs scale
Cleavage:
Perfect
(001)

Optical Data of MetakirchheimeriteHide

Type:
Uniaxial (-)
RI values:
nω = 1.644 nε = 1.617
Max Birefringence:
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic

Chemistry of MetakirchheimeriteHide

Mindat Formula:
Co(UO2)2(AsO4)2 · 8H2O
Elements listed:
As, Co, H, O, U - search for minerals with similar chemistry

Crystallography of MetakirchheimeriteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.1955 Å, b = 9.7715 Å, c = 13.2319 Å
α = 75.525°, β = 84.052°, γ = 81.661°
Ratio:
a:b:c = 0.736 : 1 : 1.354
Unit Cell V:
889.08 ų (Calculated from Unit Cell)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005993MetakirchheimeriteLocock A J, Burns P C, Flynn M (2004) Divalent transition metals and magnesium in structures that contain the autunite-type sheet The Canadian Mineralogist 42 1699-171820040293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.55 Å(100)
3.56 Å(100)
5.07 Å(60)
4.30 Å(60)
3.00 Å(60)
3.41 Å(50)
2.52 Å(50)

Geological EnvironmentHide

Type Occurrence of MetakirchheimeriteHide

Type Locality:
ⓘ Sophia Mine, Böckelsbach valley, Wittichen, Schenkenzell, Rottweil, Freiburg Region, Baden-Württemberg, Germany
Reference:
Walenta, K. (1958) Die sekundaren Uranmineralien des Schwarzwaldes. Jahresheft des Geologischen Landesant Baden-Wurttemberg: 3: 17-51.

Other Language Names for MetakirchheimeriteHide

Relationship of Metakirchheimerite to other SpeciesHide

Member of:
Meta-autunite Group
Other Members of this group:
AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon. 2/m
Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
Meta-autuniteCa(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m)
MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OMon. 2 : P21
MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
MetalodèviteZn(UO2)2(AsO4)2 · 10H2OTet. 4/m : P42/m
MetanatroautuniteNa(UO2)(PO4)(H2O)3Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
MetarauchiteNi(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
MetauranocirciteBa(UO2)2(PO4)2 · 7H2OMon. 2 : P21
MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
NatrouranospiniteNa2(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
Trögerite(H3O)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
Uramarsite(NH4)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc

Related Minerals - Strunz-mindat GroupingHide

8.EB.Meta-autunite GroupA1-2(UO2)2(TO4)2 · 5-10H2O
8.EB.05AutuniteCa(UO2)2(PO4)2 · 10-12H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.EB.05HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m : P2/b
8.EB.05KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
8.EB.05HydronováčekiteMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
8.EB.05SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m
8.EB.05TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
8.EB.05UranospiniteCa(UO2)2(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.05Xiangjiangite(Fe3+,Al)(UO2)4(PO4)2(SO4)2(OH) · 22H2OTet.
8.EB.05ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05MetarauchiteNi(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.05NováčekiteMg(UO2)2(AsO4)2 · 10H2OMon. 2/m
8.EB.05RauchiteNi(UO2)2(AsO4)2 · 10H2OTric. 1 : P1
8.EB.10BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
8.EB.10LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon. 2/m
8.EB.10Meta-autuniteCa(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m)
8.EB.10MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
8.EB.10MetauranocirciteBa(UO2)2(PO4)2 · 7H2OMon. 2 : P21
8.EB.10MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OMon. 2 : P21
8.EB.10MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10PrzhevalskitePb2(UO2)3(PO4)2(OH)4 · 3H2OTet.
8.EB.10Pseudo-autunite(H3O)4Ca2(UO2)2(PO4)4 · 5H2OOrth.
8.EB.10MetanatroautuniteNa(UO2)(PO4)(H2O)3Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15NatrouranospiniteNa2(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Trögerite(H3O)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Uramarsite(NH4)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
8.EB.20ThreadgolditeAl(UO2)2(PO4)2(OH) · 8H2OMon.
8.EB.20ChistyakovaiteAl(UO2)2(AsO4)2(F,OH) · 6.5H2OMon.
8.EB.25ArsenuranospathiteAl(UO2)2(AsO4)2F · 20H2OOrth. mm2 : Pnn2
8.EB.25Uranospathite(Al,◻)(UO2)2(PO4)2F · 20(H2O,F)Orth. mm2 : Pnn2
8.EB.30Vochtenite(Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2OMon.
8.EB.35CoconinoiteFe3+2Al2(UO2)2(PO4)4(SO4)(OH)2 · 20H2OMon.
8.EB.40RanunculiteHAl(UO2)(PO4)(OH)3 · 4H2OMon.
8.EB.45TrianguliteAl3(UO2)4(PO4)4(OH)5 · 5H2OTric.
8.EB.50FurongiteAl13(UO2)7(PO4)13(OH)14 · 58H2OTric. 1 : P1
8.EB.55SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m
8.EB.60Horákite(Bi7O7OH)[(UO2)4(PO4)2(AsO4)2(OH)2] · 3.5H2OMon. 2/m : B2/b

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.

Internet Links for MetakirchheimeriteHide

References for MetakirchheimeriteHide

Reference List:
Walenta, K. (1958) Die sekundaren Uranmineralien des Schwarzwaldes. Jahresheft des Geologischen Landesant Baden-Wurttemberg: 3: 17-51 [type-description].
Walenta, K. (1958) Die sekundaren Uranmineralien des Schwarzwaldes. Jahresheft des Geologischen Landesant Baden-Wurttemberg: 3: 17-51.
Fleischer, M. (1959) New mineral names. American Mineralogist: 44: 464-470.
Walenta, K. (1964) Rare arsenate minerals with special consideration of occurrences in the Black Forest (Beiträge zur Kenntnis seltener Arsenatmineralien unter besonderer Berücksichtigung von Vorkommen des Schwarzwaldes). Tschermaks Mineralogische und Petrographische Mitteilungen: 9: 111-174. (in German)
Vochten, Renaud, Goeminne, André (1984) Synthesis, crystallographic data, solubility and electrokinetic properties of meta-zeunerite, meta-kirchheimerite and nickel-uranylarsenate. Physics and Chemistry of Minerals, 11 (2) 95-100 doi:10.1007/bf00308011
Ondrus, Veselovsky, Gabasova, Srein (2003) Supplement to secondary and rock-forming minerals of the Jachymov ore district. Journal of the Czech Geological Society: 48(4/4): 149-155.
Locock, A. J., Burns, P. C., Flynn, T. M. (2004) Divalent transition metals and magnesium in structures that contain the autunite-type sheet. The Canadian Mineralogist, 42 (6) 1699-1718 doi:10.2113/gscanmin.42.6.1699
Plášil, J., Čejka, J., Sejkora, J., Hloušek, J., Goliáš, V. (2009) New data for metakirchheimerite from Jáchymov (St. Joachimsthal), Czech Republic. Journal of GEOsciences, 54 (4) 373-384
Hazen, Robert M., Hystad, Grethe, Golden, Joshua J., Hummer, Daniel R., Liu, Chao, Downs, Robert T., Morrison, Shaunna M., Ralph, Jolyon, Grew, Edward S. (2017) Cobalt mineral ecology. American Mineralogist, 102 (1) 108-116 doi:10.2138/am-2017-5798
(2023) Metakirchheimerite. Handbook of Mineralogy. Mineralogical Society of America

Localities for MetakirchheimeriteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • Karlovy Vary Region
    • Karlovy Vary District
      • Jáchymov
Ondruš et al. (2003) +1 other reference
Plášil et al. (2009)
France
 
  • Occitanie
    • Hérault
      • Lodève
        • Le Bosc
- (1998)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Rottweil
        • Schenkenzell
          • Wittichen
54 (in German) +1 other reference
            • Böckelsbach valley
American Mineralogist (1959) +1 other reference
            • Burgfelsen
            • Heubach Valley
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