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About UranopolycraseHide

5 - 6
Crystal System:
Member of:
Named as the uranium-dominant analogue of polycrase-(Y).
The uranium analogue of polycrase-(Y).
Compare also brannerite.

Classification of UranopolycraseHide

Approval Year:

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
G : With large (+- medium-sized) cations; chains of edge-sharing octahedra

3 : AB2O6

Physical Properties of UranopolycraseHide

5 - 6 on Mohs scale

Chemical Properties of UranopolycraseHide

IMA Formula:
Common Impurities:

Crystallography of UranopolycraseHide

Crystal System:
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cell Parameters:
a = 14.51(1) Å, b = 5.558(5) Å, c = 5.173(4) Å
a:b:c = 2.611 : 1 : 0.931
Unit Cell V:
417.18 ų (Calculated from Unit Cell)
Elongated, tabular.
Crystalline only after heating at 900°C for 10 h; originally metamict.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
2.99 (100)
2.78 (25)
1.90 (50)
1.77 (35)
1.48 (40)

Type Occurrence of UranopolycraseHide

Synonyms of UranopolycraseHide

Other Language Names for UranopolycraseHide

Relationship of Uranopolycrase to other SpeciesHide

Member of:
Other Members of this group:
Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m)
Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6Orth. mmm (2/m 2/m 2/m) : Pbcn
Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12
Loranskite-(Y)(Y,Ce,Ca)ZrTaO6 (?)
Polycrase-(Y)Y(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m)

Common AssociatesHide

Associated Minerals Based on Photo Data:
Foitite1 photo of Uranopolycrase associated with Foitite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.DG.05Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m)
4.DG.05Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DG.05Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12
4.DG.05Loranskite-(Y)(Y,Ce,Ca)ZrTaO6 (?)
4.DG.05Polycrase-(Y)Y(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m)
4.DG.10Fergusonite-(Y)-βYNbO4Mon. 2/m
4.DG.15FoorditeSn2+(Nb,Ta)2O6Mon. 2/m : B2/b
4.DG.20RaspitePb(WO4)Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m),Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m),Nb,Ti)2(O,OH)6,Th,Ca,U)(Ti,Fe)2(O,OH)6Amor.

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 UranopolycraseHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Aurisicchio, C., Orlandi, P., Pasero, M., Perchiazzi, N. (1993): Uranopolycrase, the uranium-dominant analog of polycrase-(Y), a new mineral from Elba Island, Italy, and its crystal structure. Eur. J. Mineral. 5, 1161-1165.
New Minerals (1997), New Minerals 1990-1994.

Internet Links for UranopolycraseHide

Localities for UranopolycraseHide

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.
  • Red Sea
    • Eastern Desert
Helmy, H. M., & Kaindl, R. Mineralogy and fluid inclusion study of the molybdenum-uranium-fluorite deposit, Gebel Gattar area, Eastern Desert, Egypt.
  • Lombardy
    • Sondrio Province
      • Valchiavenna
        • Novate Mezzola
          • Codera Valley
Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 pp.
  • Piedmont
    • Cuneo Province
      • Bagnolo Piemonte
Bruno Marello collection
    • Verbano-Cusio-Ossola Province
      • Ossola Valley
        • Vigezzo Valley
          • Toceno
            • Val di Crana
              • Alpe I Motti
Callegari A., Mattioli V. (2002): Novità mineralogiche: Val Vigezzo. Riv. Mineral. Ital., 26, (2), 78-80; Piccoli G.C., Maletto G., Bosio P., Lombardo B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp.; Boscardin M., Mattioli V., Rocchetti I. (2013): Minerali della Valle Vigezzo. Litotipografia Alcione, Lavis (Trento), 229 pp.
  • Tuscany
    • Livorno Province
      • Elba Island
        • Campo nell'Elba
          • San Piero in Campo
Giannettoni L., Gini C., Guelfi F., Orlandi P., Sovilla S.: Uranopolicrasio una nuova specie dell'isola d’Elba., Rivista Mineralogica Italiana., n. 4, 237-243. and Aurisicchio C., Orlandi P., Pasero M., Perchiazzi N.(1993): Uranopolycrase, the uranium-dominant analogue of polycrase-(Y), a new mineral from Elba Island, Italy, and its crystal structure. Eur. J. Mineral., 5, 1161-1165. ;
Adriano Perugini found
Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo, 249 pp.
Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo, 249 pp.
  • Oaxaca
    • Mun. de San Francisco Telixtlahuaca
      • San Francisco Telixtlahuaca
Prol-Ledesma, R.-M., Melgarejo, J.C. & Martin, R.F. (2012) The El Muerto "NYF" granitic pegmatite, Oaxaca, Mexico, and its striking enrichment in allanite-(Ce) and monazite-(Ce). Canadian Mineralogist 50, 1055-1076.
  • Košice Region
    • Rožňava Co.
Uher P., Malachovský P., Bačík P., Chudík P. & Števko M. (2009): Polykras-(Y), uranopolykras a Ti-Nb-Ta-Fe minerál v kremenných žilách a exokontaktných zónach granitov gemerika, Slovenské rudohorie. Bull. mineral-petrolog. Odd. Nár. Muz. (Praha), 17, 1, 14-24.
Uher P., Malachovský P., Bačík P., Chudík P. & Števko M. (2009): Polykras-(Y), uranopolykras a Ti-Nb-Ta-Fe minerál v kremenných žilách a exokontaktných zónach granitov gemerika, Slovenské rudohorie. Bull. mineral-petrolog. Odd. Nár. Muz. (Praha), 17, 1, 14-24.
  • Grischun (Grisons; Graubünden)
    • Bregaglia Valley (Bergell)
      • Forno Valley
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 156.
  • Colorado
    • Pitkin Co.
      • Columbia District
        • Independence (Independence Pass)
Rudy Bologna
  • Texas
    • Burnet Co.
Self-Collected by Franklin Roberts
Mineral and/or Locality  
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