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Uranopolycrase

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About UranopolycraseHide

Formula:
(U4+,Y)(Ti,Nb)2O6
Colour:
Brown-red
Lustre:
Adamantine
Hardness:
5 - 6
Crystal System:
Orthorhombic
Member of:
Name:
Named as the uranium-dominant analogue of polycrase-(Y).
The uranium analogue of polycrase-(Y).
Compare also brannerite.


Classification of UranopolycraseHide

Approved
Approval Year:
1990
4.DG.05

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
8.3.8.5

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6

Physical Properties of UranopolycraseHide

Adamantine
Transparency:
Opaque
Colour:
Brown-red
Hardness:
5 - 6 on Mohs scale

Chemical Properties of UranopolycraseHide

Formula:
(U4+,Y)(Ti,Nb)2O6
IMA Formula:
(U,Y)(Ti,Nb,Ta)2(O,OH)6
Common Impurities:
Th,Mn,Ca,Nd,TR

Crystallography of UranopolycraseHide

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

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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)
Tanteuxenite-(Y)Y(Ta,Nb,Ti)2(O,OH)6
Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6Amor.

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.05Tanteuxenite-(Y)Y(Ta,Nb,Ti)2(O,OH)6
4.DG.05Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6Amor.
4.DG.10Fergusonite-(Y)-βYNbO4Mon. 2/m
4.DG.10Fergusonite-(Nd)-β(Nd,Ce)NbO4
4.DG.10Fergusonite-(Ce)-β(Ce,La,Nd)NbO4
4.DG.10Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4Orth.
4.DG.10Beta-Fergusonite-(Nd)(Nd,Ce)NbO4
4.DG.15FoorditeSn2+(Nb,Ta)2O6Mon. 2/m : B2/b
4.DG.15Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6Mon.
4.DG.20RaspitePb(WO4)Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide

8.3.8.1Polycrase-(Y)Y(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m)
8.3.8.2Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m)
8.3.8.3Tanteuxenite-(Y)Y(Ta,Nb,Ti)2(O,OH)6
8.3.8.4Yttrocrasite-(Y)(Y,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.
Italy
 
  • 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.
Mexico
 
  • 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.
Slovakia
 
  • 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.
Switzerland
 
  • 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.
USA
 
  • 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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