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Meta-ankoleite

A valid IMA mineral species
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01995200014947620512814.jpg
Meta-ankoleite

Tirpersdorf, Vogtlandkreis, Saxony, Germany
00361280017110126417790.jpg
Meta-ankoleite, etc.

U-REE occurrence, Betliar, Rožňava District, Košice Region, Slovakia
03547540017094798635565.jpg
Meta-ankoleite

Tirpersdorf, Vogtlandkreis, Saxony, Germany
04993680014961468048738.jpg
Meta-ankoleite

Tirpersdorf, Vogtlandkreis, Saxony, Germany
06167600017058119033910.jpg
Meta-ankoleite, etc.

U-REE occurrence, Betliar, Rožňava District, Košice Region, Slovakia
06146640017056685799188.jpg
Meta-ankoleite

Tirpersdorf, Vogtlandkreis, Saxony, Germany
01995200014947620512814.jpg
Meta-ankoleite

Tirpersdorf, Vogtlandkreis, Saxony, Germany
03034140017110126439991.jpg
Meta-ankoleite, etc.

U-REE occurrence, Betliar, Rožňava District, Košice Region, Slovakia
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About Meta-ankoleiteHide

00425300015341583111909.jpg
Flag of Ankole Kingdom
Formula:
K2(UO2)2(PO4)2 · 6H2O
Colour:
Yellow
Hardness:
2 - 3
Specific Gravity:
3.54 (Calculated)
Crystal System:
Tetragonal
Name:
Named in 1966 by Michael J. Gallagher and David Atkin for the type locality, the Ankole District and for "meta-" suggesting a level of hydration of the mineral. Ankole originally was a kingdom in what is now southwestern Uganda.
Meta-autunite Group. Chemically the P analogue of abernathyite (also the same point group).


Unique IdentifiersHide

Mindat ID:
2661
Long-form identifier:
mindat:1:1:2661:7
GUID
(UUID V4):
2f59ded1-0b34-4b9c-918c-481f322d0b26

IMA Classification of Meta-ankoleiteHide

Classification of Meta-ankoleiteHide

Strunz-mindat (2024):
8.EB.15

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
Dana 8th ed.:
40.2a.8.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
Hey's CIM Ref.:
19.11.8

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

Physical Properties of Meta-ankoleiteHide

Transparency:
Translucent
Colour:
Yellow
Streak:
Pale yellow
Hardness:
2 - 3 on Mohs scale
Cleavage:
Perfect
{001}; also distinct on {010}.
Density:
3.54(1) g/cm3 (Calculated)

Optical Data of Meta-ankoleiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.580 - 1.583 nε = 1.560
Max Birefringence:
δ = 0.020 - 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Comments:
Faint - yellow

Chemistry of Meta-ankoleiteHide

Mindat Formula:
K2(UO2)2(PO4)2 · 6H2O
Elements listed:
H, K, O, P, U - search for minerals with similar chemistry
Common Impurities:
Ba

Crystallography of Meta-ankoleiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P4/nmm
Setting:
P4/nmm
Cell Parameters:
a = 6.993(10) Å, c = 8.891(5) Å
Ratio:
a:c = 1 : 1.271
Unit Cell V:
434.79 ų (Calculated from Unit Cell)
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.92 Å(100)
3.73 Å(65)
3.25 Å(55)
4.93 Å(50)
3.49 Å(50)
5.47 Å(45)
4.32 Å(40)
Comments:
Mungenyi pegmatite, Uganda. The data are from Gallagher and Atkin (1966).

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]
47f : [Uranyl (U⁶⁺) minerals]

Type Occurrence of Meta-ankoleiteHide

Type Locality:
ⓘ Mungenyi pegmatite, Ankole pegmatite field, Ntungamo, Western Region, Uganda
General Appearance of Type Material:
Yellow plates of up to 1 mm in diameter (usually about 0.5 mm) occurring in scaly aggregates.
Place of Conservation of Type Material:
Natural History Museum, London, United Kingdom, number BM 1966,203/4 (cotype).
Geological Setting of Type Material:
Secondary pegmatite mineral.
Associated Minerals at Type Locality:
ZirconSpinelQuartzMuscoviteMonazite
MicroclineBaryteAlbite
Reference:
Gallagher, M.J., Atkin, D. (1966) Meta-ankoleïte, hydrated potassium uranyl phosphate. Bulletin of the Geological Survey of Great Britain: 25: 49-54.

Synonyms of Meta-ankoleiteHide

Other Language Names for Meta-ankoleiteHide

Relationship of Meta-ankoleite 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-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
MetakirchheimeriteCo(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

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Meta-ankoleite associated with SaléeiteMg(UO2)2(PO4)2 · 10H2O
1 photo of Meta-ankoleite associated with AutuniteCa(UO2)2(PO4)2 · 10-12H2O
1 photo of Meta-ankoleite associated with PhurcaliteCa2(UO2)3(PO4)2O2 · 7H2O

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.10MetakirchheimeriteCo(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.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

Fluorescence of Meta-ankoleiteHide

In UV light:
Yellow-green (SW & LW)

Other InformationHide

Health Risks:
Radioactive.

Internet Links for Meta-ankoleiteHide

References for Meta-ankoleiteHide

Localities for Meta-ankoleiteHide

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.
Brazil
 
  • Minas Gerais
    • Galiléia
      • Sapucaia do Norte
SEM-EDS by Joy Desor
Chile
 
  • Atacama
    • Copiapó Province
      • Copiapó
        • Quebrada San Miguel
          • Los Azules mine
According to Dr. Tony Kampf
France
 
  • Nouvelle-Aquitaine
    • Haute-Vienne
      • Limoges
rruff.geo.arizona.edu (n.d.)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Waldshut
        • St Blasien
          • Menzenschwand
Desor (01/21)
  • Saxony
    • Vogtlandkreis
Gröbner et al. (2007) +1 other reference
Hungary
 
  • Baranya County
    • Pécs District
      • Kővágótöttös
Zsombor Eva
Italy
 
  • Sardinia
    • Metropolitan City of Cagliari
      • Capoterra
Olmi et al. (2002)
Slovakia
 
  • Košice Region
    • Rožňava District
      • Betliar
Števko M. (2022)
Uganda (TL)
 
  • Western Region
    • Ntungamo
      • Ankole pegmatite field
Gallagher et al. (1966) +1 other reference
USA
 
  • Nevada
    • Humboldt County
Nevada Bureau of Mines and Geology NBMG ... +1 other reference
  • New Jersey
    • Sussex County
      • Ogdensburg
        • Sterling Hill
Dunn (1995) +1 other reference
  • Oregon
    • Harney County
      • Pueblo Mining District (Denio Mining District)
Nevada Bureau of Mines and Geology NBMG ...
  • Utah
    • San Juan County
      • Red Canyon Mining District
Joe Marty (2015)
Zimbabwe
 
  • Matabeleland North
American Mineralogist (1967)
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