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Uranocircite

A valid IMA mineral species - grandfathered
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About UranocirciteHide

Formula:
Ba(UO2)2(PO4)2 · 10H2O
Colour:
Yellow-green, yellow; pale canary-yellow in transmitted light.
Lustre:
Pearly
Hardness:
2 - 2½
Specific Gravity:
3.46
Crystal System:
Tetragonal
Member of:
Name:
The name reflects its uranium content and its discovery locality, Falkenstein (Falcon's Stone) - the Greek ÎșÎŻÏÎșÎżÏ‚ for "CIRCes" meaning "falcon." It was renamed to uranocircite-II in 1963, but reverted back to uranocircite in 2022.
Autunite Group.

Dehydrates rapidly in dry atmospheres at normal temperature to metauranocircite (as metauranocircite-I in Walenta, 1963).


Unique IdentifiersHide

Mindat ID:
4105
Long-form identifier:
mindat:1:1:4105:4
GUID
(UUID V4):
ece39e1e-58b2-4b1e-bcad-437d6e4f2c85

IMA Classification of UranocirciteHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Renamed by the IMA

Classification of UranocirciteHide

8.EB.05

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
40.2a.3.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
19.11.22

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

Physical Properties of UranocirciteHide

Pearly
Transparency:
Transparent, Translucent
Comment:
Lustre pearly on cleavage {001}.
Colour:
Yellow-green, yellow; pale canary-yellow in transmitted light.
Hardness:
2 - 2½ on Mohs scale
Cleavage:
Perfect
Perfect on {001}; distinct on {100} {010}
Density:
3.46 g/cm3 (Measured)    

Optical Data of UranocirciteHide

Type:
Biaxial (-)
RI values:
nα = 1.574 nβ = 1.583 nγ = 1.588
2V:
Measured: 70° , Calculated: 72°
Max Birefringence:
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none
Pleochroism:
Weak
Comments:
X = Colourless
Y = Z = Pale canary yellow
Comments:
Exhibits sets of twin lamellae parallel to {100} and {010}. The biaxial material, upon heating to 100° - 150°, transitions to uniaxial with the accompanying loss of water to the dihydrate.

Chemistry of UranocirciteHide

Mindat Formula:
Ba(UO2)2(PO4)2 · 10H2O

Crystallography of UranocirciteHide

Crystal System:
Tetragonal
Cell Parameters:
a = 7.01 Å, c = 20.46 Å
Ratio:
a:c = 1 : 2.919
Unit Cell V:
1,005.41 ų (Calculated from Unit Cell)
Morphology:
Thin tabular crystals.
Twinning:
Twin lamellae parallel to {100} and {010}.
Comment:
Interpreted to be isostructural with heinrichite: monoclinic, space group P2/c, a 7.01, b 6.99, c 21.2 .ANG., beta 103.9°, V 1008.4 A3 (Locock et al., 2005)

Epitaxial Relationships of UranocirciteHide

Epitaxial Minerals:
TorberniteCu(UO2)2(PO4)2 · 12H2O
AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Epitaxy Comments:
Occurs in parallel growths.

Geological EnvironmentHide

Paragenetic Mode(s):
Geological Setting:
Secondary uranium mineral

Type Occurrence of UranocirciteHide

Synonyms of UranocirciteHide

Other Language Names for UranocirciteHide

Relationship of Uranocircite to other SpeciesHide

Member of:
Other Members of this group:
AutuniteCa(UO2)2(PO4)2 · 10-12H2OOrth. mmm (2/m 2/m 2/m) : Pnma
BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m : P2/b
HydronováčekiteMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
NováčekiteMg(UO2)2(AsO4)2 · 10H2OMon. 2/m
RauchiteNi(UO2)2(AsO4)2 · 10H2OTric. 1 : P1
SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m
SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m
TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
UranospiniteCa(UO2)2(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm

Common AssociatesHide

Associated Minerals Based on Photo Data:
9 photos of Uranocircite associated with Smoky QuartzSiO2
7 photos of Uranocircite associated with QuartzSiO2
5 photos of Uranocircite associated with OrthoclaseK(AlSi3O8)
2 photos of Uranocircite associated with UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
2 photos of Uranocircite associated with TorberniteCu(UO2)2(PO4)2 · 12H2O
2 photos of Uranocircite associated with AutuniteCa(UO2)2(PO4)2 · 10-12H2O
2 photos of Uranocircite associated with ZirconZr(SiO4)
1 photo of Uranocircite associated with FluoriteCaF2
1 photo of Uranocircite associated with UraniniteUO2
1 photo of Uranocircite associated with MuscoviteKAl2(AlSi3O10)(OH)2

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.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.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/nmm
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.60Horåkite(Bi7O7OH)[(UO2)4(PO4)2(AsO4)2(OH)2] · 3.5H2OMon. 2/m : B2/b

Fluorescence of UranocirciteHide

Other InformationHide

Notes:
Radioactive. Soluble in acids.
Health Risks:
Contains uranium. Wash hands after handling. Do not lick or ingest, do not breathe dust when breaking, trimming or otherwise modifying.

Internet Links for UranocirciteHide

References for UranocirciteHide

Reference List:

Localities for UranocirciteHide

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.
Australia
 
  • Queensland
    • Cloncurry Shire
      • Rosebud Station
        • Mary Kathleen district
Sorrell (n.d.)
Austria
 
  • Lower Austria
    • GmĂŒnd District
      • Großdietmanns
        • Unterlembach
Neschen (n.d.)
  • Styria
    • Weiz District
      • Rettenegg
        • Prinzkogel (Prinzenkogel)
Exel (1993)
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
      • Barra do CuietĂ©
Bruno Gioia specimen +1 other reference
    • Malacacheta
Bulgaria
 
  • Sofia City Province
    • Stolichna Municipality
      • Buhovo
Kalaidjiev et al. (2009)
Palache et al. (1951)
China
 
  • Guangdong
    • Shaoguan
      • Wengyuan Co.
Dahlkamp (2009)
  • Hunan
    • Huaihua
      • Xupu Co.
National Geological Archives of China ...
    • Yiyang
      • Anhua Co.
National Geological Archives of China ...
  • Jiangxi
    • Ganzhou
      • Ningdu Co.
        • Taoshan Uranium ore field (Liueryilin Uranium ore field; Uranium ore field No. 6210)
Maozhong Min et al. (2005)
    • Jiujiang
      • Xiushui Co.
        • Xiushui Uranium ore field
Dahlkamp (2009)
Dahlkamp (2009)
Czech Republic
 
  • Karlovy Vary Region
    • Karlovy Vary District
Lapis 2002 (7/8)
    • Sokolov District
      • BƙezovĂĄ
M.E. Ciriotti
      • KrĂĄsno
        • VysokĂœ KĂĄmen
JirĂĄsek J. et al. (2016)
  • Plzeƈ Region
    • Klatovy District
      • Frymburk
        • Damětice
PauliĆĄ P. et al. (Kutna Hora, issue 1)
    • Tachov District
      • ZadnĂ­ Chodov
PauliĆĄ P. et al. (Kutna Hora, issue 1)
  • South Bohemian Region
    • JindƙichĆŻv Hradec District
PauliĆĄ P. et al. (Kutna Hora, issue 1)
DR Congo
 
  • Haut-Katanga
    • Kambove Territory
      • Shinkolobwe
Gauthier et al. (1989)
  • Tanganyika
Dewaele et al. (2016)
France
 
  • Auvergne-RhĂŽne-Alpes
    • Allier
      • Vichy
        • ÉchassiĂšres
          • Montmins mining district
Cuchet et al. (2000)
    • Cantal
      • Saint-Flour
        • Jabrun
R. Pierrot
    • Haute-Loire
      • Le Puy-en-Velay
        • Bellevue-la-Montagne
  • Bourgogne-Franche-ComtĂ©
    • NiĂšvre
      • ChĂąteau-Chinon
        • Dommartin
- (1998)
- (1998)
    • SaĂŽne-et-Loire
      • Charolles
        • Grury
OLLIC Pascal Collection +1 other reference
        • Issy-l'EvĂȘque
J. Geffroy
        • Marly-sous-Issy
Asselborn (1983) +1 other reference
        • Neuvy-Grandchamp
- (1998)
  • Brittany
    • CĂŽtes-d'Armor
      • Guingamp
Schillinger et al. (2001)
        • Saint-Gilles-Pligeaux
- (1998)
      • Lannion
        • Lannion
- (1998)
      • Saint-Brieuc
        • TrĂ©daniel
- (1998)
    • FinistĂšre
      • Brest
        • Bohars
R.PIERROT et al. (1973)
- (1998)
    • Morbihan
      • Pontivy
        • BernĂ©
R. Pierrot
        • Guern
R. Pierrot
R. Pierrot
- (1998)
        • Lignol
- (1998)
        • Melrand
R. Pierrot
  • Nouvelle-Aquitaine
    • CorrĂšze
      • Ussel
        • Davignac
    • Creuse
      • GuĂ©ret
        • GuĂ©ret
    • Haute-Vienne
      • Limoges
        • Saint-Sylvestre
- (1998)
  • Occitanie
    • Aveyron
      • Rodez
        • Entraygues-sur-TruyĂšre
- (1998)
        • Florentin-la-Capelle
        • Golinhac
- (1998)
  • Provence-Alpes-CĂŽte d'Azur
    • Alpes-Maritimes
      • Nice Arrondissement
        • Saint-Etienne-de-TinĂ©e
          • Auron
R. Pierrot
    • Var
      • Draguignan
        • FrĂ©jus
MAURY (S) +1 other reference
Gabon
 
  • Haut-OgoouĂ© Province
    • LĂ©boumbi-Leyou Department
      • Mounana
Lheur et al. (2001)
Germany
 
  • Baden-WĂŒrttemberg
    • Freiburg Region
      • Breisgau-Hochschwarzwald
        • Eisenbach
Weiß (1990)
      • Waldshut
        • St Blasien
          • Menzenschwand
Walenta (1992)
Walenta (1992)
  • Bavaria
    • Lower Bavaria
      • Regen District
        • Lindberg
          • Pauliberg
www.mineralienatlas.de (n.d.)
    • Upper Palatinate
      • Neustadt an der Waldnaab District
        • Waidhaus
          • Hagendorf
Dill H.G.: "Mineralogical and chemical ...
      • Schwandorf District
        • Nabburg
          • Wölsenberg
collection H.J. Haas
        • Schwarzach bei Nabburg
          • Wölsendorf
Weiß (1990)
Bald +1 other reference
        • Stulln
Weiß (1990)
in the collection of Joachim Esche
Dill et al. (2010) +1 other reference
  • Saxony
    • Erzgebirgskreis
      • BĂ€renstein
        • Niederschlag
Lapis (4)
      • Geyer
Wittern (2001)
      • Schneeberg
        • NeustĂ€dtel
Lapis 30 (7/8)
        • Rödergasse
Herrmann et al. (2007)
    • Vogtlandkreis
      • Bergen
Weisbach (1877) +2 other references
      • Neuensalz
        • MechelgrĂŒn
Tröger (2006) +1 other reference
      • Theuma
Matt Wall
Wittern (2001)
Japan
 
  • Gifu Prefecture
    • Mizunami City
      • Tsukiyoshi uranium ore deposits
Hayashi & Nagashima (1965)
Madagascar
 
  • Melaky
    • Morafenobe District
      • Beravina
Behier (1959)
  • Vakinankaratra
    • Antsirabe II District
      • Vinaninkarena
        • Anjanamanjaka
Behier (1960)
Niger
 
  • Agadez
    • Arlit
Poland
 
  • Lower Silesian Voivodeship
    • Karkonosze County
      • Gmina Stara Kamienica
        • Kopaniec
Mochnacka K. 1975: Mineralizacja skaƂ ... +2 other references
Lis et al. (1986)
    • LwĂłwek ƚląski County
      • Gmina Lubomierz
        • RadoniĂłw
Syczewski et al. (2023)
Portugal
 
  • Coimbra
    • TĂĄbua
      • Ázere e Covelo
LNEG - LaboratĂłrio Nacional de Energia ...
  • Guarda
    • Guarda
      • Arrifana
LNEG - LaboratĂłrio Nacional de Energia ...
      • JoĂŁo AntĂŁo
LNEG - Siorminp database information
    • Sabugal
      • Bendada
Palache et al. (1951)
  • Portalegre
    • Castelo de Vide
      • Nossa Senhora da Graça de PĂłvoa e Meadas
LNEG
    • Nisa
      • Nossa Senhora da Graça
        • Poio
LNEG/Siorminp database +1 other reference
  • Viseu
    • Mangualde
      • Mangualde (Mesquitela e Cunha Alta)
        • Cubos-Mesquitela-Mangualde area
Mineralien Atlas
    • SĂĄtĂŁo
      • Ferreira de Aves
        • Aldeia Nova
Russia
 
  • Bashkortostan
    • Beloretsk district
Kovalev et al. (2017)
South Korea
 
  • Gyeonggi Province
Jeong et al. (1999)
Spain
 
  • Andalusia
    • CĂłrdoba
Desor (07/2020)
      • Hornachuelos
        • Sierra Albarrana
          • El Cabril
Menor et al. (2010)
Tajikistan
 
  • Sughd
    • Kandjol ore field
Chernikov et al. (1997)
USA
 
  • Arizona
    • Coconino County
      • Cameron Mining District
Austin (1964) +1 other reference
    • Gila County
      • Sierra Ancha Mountains
        • Sierra Ancha Mining District
          • Asbestos Point (Asbestos Peak) area
            • Bull Canyon
Granger (1959)
            • Warm Spring Canyon
Granger (1959) +1 other reference
          • Greenback Peak area
Granger (1959)
  • California
    • Kern County
      • Piute Mountains
        • Weldon District
          • Rocky Point
Troxel et al. (1957) +1 other reference
  • Colorado
    • Saguache County
      • Cochetopa Mining District (Cochetopa Creek Mining District)
Eckel et al. (1997)
Eckel et al. (1997)
  • Montana
    • Jefferson County
      • Clancy-Lump Gulch Mining District
Meschter (1953) +3 other references
  • Nevada
    • Lander County
      • Reese River Mining District
Jensen (2012)
  • New Hampshire
    • Grafton County
Januzzi et al. (1976)
  • South Dakota
    • Lawrence County
      • Bald Mountain Mining District (Portland Mining District)
        • Annie Creek
Tom Loomis website
    • Pennington County
USGS: Geological Survey Circular 359
  • Texas
    • Oldham County
Page et al. (1956) +3 other references
 
and/or  
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