Mindat Logo
Home Page Log In Messageboard The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Uranopolycrase

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy
© Stephan Wolfsried

Show Uranopolycrase Photos (21)



Formula:
(U
4+
 
,Y)(Ti,Nb)
 
2
O
 
6
System:OrthorhombicColour:Brown-red
Hardness:5 - 6
Name:Named as the uranium-dominant analogue of polycrase-(Y).


Euxenite Group.

The uranium analogue of Polycrase-(Y).
Compare also Brannerite.

Classification of Uranopolycrase

IMA status:Approved 1990
Strunz 8th edition ID:4/D.19-15
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:8.3.8.5

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
mindat.org URL:http://www.mindat.org/min-4109.html
Please feel free to link to this page.

Type Occurrence of Uranopolycrase

Type Locality:Fonte del Prete, San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy
Year of Discovery:1990

Physical Properties of Uranopolycrase

Lustre:Adamantine
Diaphaneity (Transparency):Opaque
Colour:Brown-red
Hardness (Mohs):5 - 6

Crystallography of Uranopolycrase

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pbcn {P21/b 2/c 21/n}
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 Volume: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.

Chemical Properties of Uranopolycrase

Formula:
(U
4+
 
,Y)(Ti,Nb)
 
2
O
 
6
Essential elements:O, Ti, U
All elements listed in formula:Nb, O, Ti, U, Y
Common Impurities:Th,Mn,Ca,Nd,TR

Relationship of Uranopolycrase to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DG.05Euxenite-(Y)
(Y,Ca,Ce,U,Th)(Nb,Ti,Ta)
 
2
O
 
6
4.DG.05Fersmite
(Ca,Y)(Nb,Ta,Ti)
 
2
(O,OH)
 
6
4.DG.05Kobeite-(Y)
(Y,Zr)
 
2
(Ti,Fe
3+
 
)
 
2
(O,OH)
 
7
4.DG.05Loranskite-(Y)
(Y,Ce,Ca)ZrTaO
 
6
 (?)
4.DG.05Polycrase-(Y)
(Y,U)(Ti,Nb)
 
2
O
 
6
4.DG.05Tanteuxenite-(Y)
(Y,Ce,Ca)(Ta,Nb,Ti)
 
2
(O,OH)
 
6
4.DG.05Yttrocrasite-(Y)
(Y,Th,Ca,U)(Ti,Fe)
 
2
(O,OH)
 
6
4.DG.10β-Fergusonite-(Y)
YNbO
 
4
4.DG.10β-Fergusonite-(Nd)
(Nd,Ce)NbO
 
4
4.DG.10β-Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
4.DG.10Yttrotantalite-(Y)
(Y,Ca,U
4+
 
,Fe
2+
 
)
 
2
(Ta,Nb)
 
2
O
 
8
4.DG.10Beta-Fergusonite-(Nd)
4.DG.15Foordite
(Sn,Pb)(Nb,Ta)
 
2
O
 
6
4.DG.15Thoreaulite
(Sn
2+
 
,Pb)(Ta,Nb)
 
2
O
 
6
4.DG.20Raspite
Pb(WO
 
4
)

Other Names for Uranopolycrase

Synonyms:
IMA1990-046
Other Languages:
German:Uranopolykras
Russian:Уранополикраз

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Uranopolycrase

Reference List:

- +
European Journal of Mineralogy (1993): 5: 1161-1165.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for Uranopolycrase

Search Engines:
  • Look for Uranopolycrase on Google
  • Look for Uranopolycrase images on Google
    • External Links:
  • Look for Uranopolycrase on Webmineral
  • Look for Uranopolycrase on Athena Mineralogy
  • Look for Uranopolycrase on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Uranopolycrase details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Top quality minerals from Kristalle of California
  • Fine and rare minerals from mintreasure.com
  • Buy fine minerals and gemstones from Pala International
  • Buy minerals from YourMineralCollection
  • Search for minerals at Heliodor
  • Rare and Unusual minerals at Mineralogical Research Company
  • Uranopolycrase specimens for sale - minfind.com
  • Fabre Minerals - search for Uranopolycrase specimens
  • Buy from David K Joyce minerals
  • Search for Uranopolycrase on Well-Arranged Molecules
  • High-end worldwide specimens & outstanding customer service
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Uranopolycrase

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Lombardy
      • Sondrio Province
        • Novate Mezzola
          • Codera Valley
    		Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 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. ;
    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.
    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
     
    • Texas
      • Burnet Co.
    		Self-Collected by Franklin Roberts
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 4th Apr 2013 15:30:28
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds