Orthobrannerite
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About Orthobrannerite
Formula:
U4+U6+Ti4O12(OH)2
Colour:
Black
Lustre:
Adamantine
Hardness:
5½
Crystal System:
Orthorhombic
Name:
Named for the relation to brannerite.
Type Locality:
Dimorph of:
The orthorhombic dimorph of brannerite. Orthobrannerite-Thorutite Series. Compare 'UM1982-19-SiO:TiU'.
Classification of Orthobrannerite
Approved, 'Grandfathered' (first described prior to 1959)
4/D.22-30
4.DH.05
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
8.2.7.1
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
7.16.19
7 : Oxides and Hydroxides
16 : Oxides of U
7 : Oxides and Hydroxides
16 : Oxides of U
Physical Properties of Orthobrannerite
Chemical Properties of Orthobrannerite
Formula:
U4+U6+Ti4O12(OH)2
Elements listed:
Crystallography of Orthobrannerite
Crystal System:
Orthorhombic
Cell Parameters:
a = 7.37 Å, b = 11.67 Å, c = 6.33 Å
Ratio:
a:b:c = 0.632 : 1 : 0.542
Unit Cell V:
544.43 ų (Calculated from Unit Cell)
Morphology:
Prismatic crystals, to 1.2 cm.
Comment:
Cell obtained after heating completely metamict type material to 1000°C.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.87 Å | (7) |
3.89 Å | (8) |
3.17 Å | (10) |
2.45 Å | (9) |
2.29 Å | (5) |
1.659 Å | (9) |
1.203 Å | (6) |
Comments:
Obtained after heating completely metamict type material to 1000°C.
Type Occurrence of Orthobrannerite
Geological Setting of Type Material:
Weathering residue of a biotite pyroxene syenite in Yunan, China.
Other Language Names for Orthobrannerite
German:Orthobrannerit
Spanish:Orthobrannerita
Relationship of Orthobrannerite to other Species
Forms a series with:
Common Associates
Related Minerals - Nickel-Strunz Grouping
4.DH. | Fluornatropyrochlore | (Na,Pb,Ca,REE,U)2Nb2O6F | Iso. m3m (4/m 3 2/m) |
4.DH. | Roméite Group | A2(Sb5+)2O6Z | |
4.DH. | Hydroxykenomicrolite | (◻,Na,Sb3+)2Ta2O6(OH) | Iso. |
4.DH. | Oxyplumboroméite | Pb2Sb2O6O | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH. | Cesiokenopyrochlore | ◻Nb2(O,OH)6(Cs,◻) | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH.05 | Brannerite | UTi2O6 | Mon. 2/m : B2/m |
4.DH.05 | Thorutite | (Th,U,Ca)Ti2(O,OH)6 | Mon. |
4.DH.10 | Kassite | CaTi2O4(OH)2 | Orth. |
4.DH.10 | Lucasite-(Ce) | CeTi2(O,OH)6 | Mon. |
4.DH.15 | Bariomicrolite (of Hogarth 1977) | Iso. m3m (4/m 3 2/m) : Fd3m | |
4.DH.15 | Betafite (of Hogarth 1977) | (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH) | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH.15 | Bismutomicrolite (of Hogarth 1977) | Iso. m3m (4/m 3 2/m) : Fd3m | |
4.DH.15 | Ceriopyrochlore (of Hogarth 1977) | A2Nb2(O,OH)6Z | |
4.DH.15 | Jixianite | Pb(W,Fe3+)2(O,OH)7 | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH.15 | Hydropyrochlore | (H2O,◻)2Nb2(O,OH)6(H2O) | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH.15 | Plumbopyrochlore (of Skorobogatova et al.) | A2Nb2(O,OH)6Z | |
4.DH.15 | Plumbomicrolite (of Hogarth 1977) | ||
4.DH.15 | Plumbobetafite (of Hogarth 1977) | A2-mD2X6-wZ1-n | |
4.DH.15 | Stibiomicrolite (of Groat et al.) | ||
4.DH.15 | Strontiopyrochlore (of Hogarth 1977) | A2Nb2(O,OH)6Z | |
4.DH.15 | Stannomicrolite (of Hogarth 1977) | ||
4.DH.15 | Stibiobetafite (of Černý et al.) | A2-mD2X6-wZ1-n | Iso. |
4.DH.15 | Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) | Iso. |
4.DH.15 | Yttropyrochlore (of Hogarth 1977) | A2Nb2(O,OH)6Z | |
4.DH.15 | Fluornatromicrolite | (Na1.5Bi0.5)Ta2O6F | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH.15 | Bismutopyrochlore (of Chukanov et al.) | (Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH) | Amor. |
4.DH.15 | Hydrokenoelsmoreite | ◻2W2O6(H2O) | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH.20 | Bismutostibiconite | Bi(Sb5+,Fe3+)2O7 | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH.20 | Bindheimite | Pb2Sb2O6O | Iso. m3m (4/m 3 2/m) : Fd3m |
4.DH.20 | Monimolite | Pb2Sb5+2O7 | Iso. m3m (4/m 3 2/m) |
4.DH.20 | Cuproroméite | Cu2Sb2(O,OH)7 | Iso. |
4.DH.20 | Stetefeldtite | Ag2Sb2(O,OH)7 | Iso. |
4.DH.20 | Stibiconite | Sb3+Sb5+2O6(OH) | |
4.DH.25 | Rosiaite | PbSb5+2O6 | Trig. 3m (3 2/m) : P3 1m |
4.DH.30 | Zirconolite | CaZrTi2O7 | Orth. |
4.DH.35 | Liandratite | U(Nb,Ta)2O8 | Trig. |
4.DH.35 | Petscheckite | UFe(Nb,Ta)2O8 | Hex. |
4.DH.40 | Ingersonite | Ca3Mn2+Sb5+4O14 | Trig. 3 2 : P31 2 1 |
4.DH.45 | Pittongite | Na0.22(W,Fe3+)(O,OH)3 · 0.44H2O | Hex. 6 m2 : P6m2 |
Related Minerals - Hey's Chemical Index of Minerals Grouping
7.16.1 | Uraninite | UO2 | Iso. m3m (4/m 3 2/m) : Fm3m |
7.16.2 | Schoepite | (UO2)8O2(OH)12 · 12H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
7.16.3 | Paraschoepite | UO3 · 2H2O | Orth. |
7.16.4 | Metaschoepite | (UO2)8O2(OH)12 · 10H2O | Orth. mmm (2/m 2/m 2/m) : Pbcn |
7.16.5 | Metastudtite | UO4 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
7.16.6 | Studtite | [(UO2)(O2)(H2O)2] · H2O | Mon. |
7.16.7 | Ianthinite | U4+(UO2)5O7 · 10H2O | Orth. mm2 : Amm2 |
7.16.8 | Compreignacite | K2(UO2)6O4(OH)6 · 7H2O | Orth. |
7.16.9 | Vandenbrandeite | Cu(UO2)(OH)4 | Tric. 1 : P1 |
7.16.10 | Roubaultite | Cu2(UO2)3(CO3)2O2(OH)2 · 4H2O | Tric. 1 : P1 |
7.16.11 | Becquerelite | Ca(UO2)6O4(OH)6 · 8H2O | Orth. mm2 : Pna21 |
7.16.12 | Rameauite | K2Ca(UO2)6O6(OH)4 · 6H2O | Mon. m : Bb |
7.16.13 | Agrinierite | K2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2O | Orth. |
7.16.14 | Protasite | Ba(UO2)3O3(OH)2 · 3H2O | Mon. |
7.16.15 | Billietite | Ba(UO2)6O4(OH)6 · 4-8H2O | Orth. mm2 |
7.16.16 | Bauranoite | Ba(UO2)2(OH)6 · 1-2H2O | |
7.16.17 | Metacalciouranoite | (Ca,Ba,Pb,K2)U2O7 · 2H2O | |
7.16.18 | Calciouranoite | (Ca,Ba,Pb)U2O7 · 5H2O | |
7.16.20 | Thorutite | (Th,U,Ca)Ti2(O,OH)6 | Mon. |
7.16.21 | Davidite-(La) | La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 | Trig. |
7.16.22 | Davidite-(Ce) | Ce(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 | Trig. 3 : R3 |
7.16.23 | Brannerite | UTi2O6 | Mon. 2/m : B2/m |
7.16.24 | Fourmarierite | Pb(UO2)4O3(OH)4 · 4H2O | Orth. |
7.16.25 | Richetite | (Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24 · 41H2O | Tric. |
7.16.26 | Curite | Pb3(H2O)2[(UO2)4O4(OH)3]2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
7.16.27 | Masuyite | Pb(UO2)3O3(OH)2 · 3H2O | Orth. |
7.16.28 | Vandendriesscheite | PbU7O22 · 12H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
7.16.29 | Metavandendriesscheite | PbU7O22 · nH2O n < 12 | Orth. |
7.16.30 | Sayrite | Pb2(UO2)5O6(OH)2 · 4H2O | Mon. 2/m |
7.16.31 | Wölsendorfite | Pb7(UO2)14O19(OH)4 · 12H2O | Orth. mmm (2/m 2/m 2/m) : Cmcm |
7.16.32 | Clarkeite | (Na,Ca,Pb)(UO2)O(OH) · 0-1H2O | Trig. |
7.16.33 | Uranosphaerite | Bi(UO2)O2(OH) | Mon. 2/m |
Other Information
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 Orthobrannerite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
X-ray Laboratory, Peking Institute of Uranium Geology and Xray Laboratory, Wuhan Geological College (1978): Orthobrannerite - A new mineral of the brannerite group. Acta Geologica Sinica 52(3), 241-251 (in Chinese with English abstract). [http://rruff.info/rruff_1.0/uploads/AGS52_241.pdf] [American Mineralogist (1979), 64, 656 (abstract). (http://rruff.info/rruff_1.0/uploads/AM64_652.pdf)]
Internet Links for Orthobrannerite
mindat.org URL:
https://www.mindat.org/min-3023.html
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External Links:
Mineral Dealers:
Localities for Orthobrannerite
Locality List




All localities listed without proper references should be considered as questionable.
China | |
X-ray Laboratory, Peking Institute of Uranium Geology and Xray Laboratory, Wuhan Geological College (1978): Acta Geologica Sinica 52(3), 241-251. | |
X-ray Laboratory, Peking Institute of Uranium Geology and Xray Laboratory, Wuhan Geological College (1978): Acta Geologica Sinica 52(3), 241-251. | |
Italy | |
| Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp. [determined by and described in Orlandi (1995)] |
Mexico | |
| Fayek, M., Utsunomiya, S., Ewing, R. C., & Simmons, A. (2005). Natural uranium getters in near surface environments at the Nopal I deposit, Peña Blanca, Mexico. Geochimica et Cosmochimica Acta Supplement, 69, 474. |
Slovakia | |
| - Grecula, P. et al. (1995): Ložiská nerastných surovín Slovenského rudohoria. Zväzok 1. [Mineral deposits of the Slovak Ore Mountains. Volume 1]. Geocomplex, Bratislava, Slovak Republic, 829 pp. |
Brusson Mine, Brusson, Aosta Valley, Italy