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Metakirchheimerite

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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).


Classification of MetakirchheimeriteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1958
8.EB.10

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

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
20.7.20

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

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

Chemical Properties of MetakirchheimeriteHide

Formula:
Co(UO2)2(AsO4)2 · 8H2O

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)

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)

Type Occurrence of MetakirchheimeriteHide

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

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.
LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon.
Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2OTet. 4/mmm (4/m 2/m 2/m)
MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OTet. 4mm
MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
MetalodèviteZn(UO2)2(AsO4)2 · 10H2OTet.
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
MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
Metauranocircite-IBa(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
Natrouranospinite(Na2,Ca)(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,H3O)2(UO2)2(AsO4,PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet.

Related Minerals - Nickel-Strunz GroupingHide

8.EB.05AutuniteCa(UO2)2(PO4)2 · 11H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.EB.05HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m
8.EB.05KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
8.EB.05Nováčekite-IMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
8.EB.05SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m : P21/b
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)(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.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.
8.EB.10Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2OTet. 4/mmm (4/m 2/m 2/m)
8.EB.10MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
8.EB.10Metauranocircite-IBa(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 · 8H2OTet. 4mm
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 · 3H2OOrth.
8.EB.10Meta-lodèviteZn(UO2)2(AsO4)2 · 10H2O
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.
8.EB.15Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Natrouranospinite(Na2,Ca)(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.
8.EB.15Uramarsite(NH4,H3O)2(UO2)2(AsO4,PO4)2 · 6H2OTet. 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

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.7.1Trögerite(H3O)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
20.7.2Natrouranospinite(Na2,Ca)(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
20.7.3AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
20.7.4MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
20.7.5ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
20.7.6MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
20.7.7Nováčekite-IMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
20.7.8ArsenuranyliteCa(UO2)4(AsO4)2(OH)4 · 6H2OOrth.
20.7.9MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
20.7.10UranospiniteCa(UO2)(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
20.7.11MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OTet. 4mm
20.7.12HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m
20.7.13MetalodèviteZn(UO2)2(AsO4)2 · 10H2OTet.
20.7.14ArsenuranospathiteAl(UO2)2(AsO4)2F · 20H2OOrth. mm2 : Pnn2
20.7.15HallimonditePb2(UO2)(AsO4)2 · nH2O, 0 <= n <= 0.5Tric. 1 : P1
20.7.16HügelitePb2(UO2)3(AsO4)2O2 · 5H2OMon.
20.7.17AsselbornitePb(BiO)3(UO2)4(AsO4)2(OH)7·4H2OIso.
20.7.18MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
20.7.19KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n

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 MetakirchheimeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Walenta, K. (1958) Die sekundaren Uranmineralien des Schwarzwaldes. Jahresheft des Geologischen Landesant Baden-Wurttemberg: 3: 17-51 [type-description].
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)
Locock, Andrew J.; Burns, Peter C.; Flynn, Theodore M. (2004) Divalent transition metals and magnesium in structures that contain the autunite-type sheet. Canadian Mineralogist: 42: 1699-1718.
Votchen, R. and Geominne, A. (1984) Synthesis, chrystallographic data, solubility, and electrokinetic properties of meta-zeunerite, meta-kirchheimerite and nickel-uranylarsenate. Physics and Chemistry of Minerals: 11: 95-100 (synthetic material).
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.
Hazen, R.M., Hystad, G., Golden, J.J., Hummer, D.R., Liu, C., Downs, R.T., Morrison, S.M., Ralph, J., Grew, E.S. (2017) Cobalt mineral ecology. American Mineralogist: 102: 108-116.
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: 373-384.

Internet Links for MetakirchheimeriteHide

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 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.
Czech Republic
 
  • Karlovy Vary Region
    • Karlovy Vary District
      • Jáchymov
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; Tvrdý, J. & Plášil, J. (2010): Jáchymov - Reiche Erzlagerstätte und Radonbad im böhmischen Westerzgebirge. Aufschluss 61, 277-292.
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, 373-384.
France
 
  • Occitanie
    • Hérault
      • Le Bosc
Le Règne Minéral, Hors Série IV (1998)
Germany
 
  • Baden-Württemberg
    • Freiburg
      • Rottweil
        • Schenkenzell
          • Wittichen
Markl, G. & Slotta, C. (2011): Die Uranmineralien des Lagerstättenreviers Wittichen im mittleren Schwarzwald. Lapis 36 (3), 25-37; 54 (in German).
            • Böckelsbach valley
American Mineralogist (1959) 44, pp. 466; Tscherm MPM 9 (1964), 111
            • Burgfelsen
No reference listed
            • Heubach Valley
No reference listed
 
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