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Changbaiite

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Formula:
PbNb2O6
System:
Trigonal
Hardness:
This page provides mineralogical data about Changbaiite.

Classification of Changbaiite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
4.DF.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
F : With large (+- medium-sized) cations; dimers and trimers of edgesharing octahedra
8.3.11.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
18.1.24

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
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First Recorded Occurrence of Changbaiite

Year of Discovery:
1978

Physical Properties of Changbaiite

Hardness (Mohs):

Crystallography of Changbaiite

Crystal System:
Trigonal
Cell Parameters:
a = 10.51Å, c = 11.55Å
Ratio:
a:c = 1 : 1.099
Unit Cell Volume:
V 1,104.89 ų (Calculated from Unit Cell)

Optical Data of Changbaiite

Type:
Uniaxial (+)
RI values:
nω = 2.476 nε = 2.485
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of Changbaiite

Formula:
PbNb2O6
Essential elements:
All elements listed in formula:

Relationship of Changbaiite to other Species

4.DF.05Aeschynite-(Ce)(Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6
4.DF.05Aeschynite-(Nd)(Nd,Ce,Ca)(Ti,Nb)2(O,OH)6
4.DF.05Aeschynite-(Y)(Y,Ca,Fe,Th)(Ti,Nb)2(O,OH)6
4.DF.05Nioboaeschynite-(Ce)(Ce,Ca,Th)(Nb,Ti)2(O,OH)6
4.DF.05Nioboaeschynite-(Nd)(Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta)2(O,OH)6
4.DF.05Nioboaeschynite-(Y)(Y,Ca,Ce,Nd,Th)(Nb,Ti,Ta)2(O,OH)6
4.DF.05RynersoniteCa(Ta,Nb)2O6
4.DF.05Tantalaeschynite-(Y)(Y,Ce,Ca)(Ta,Ti,Nb)2O6
4.DF.05Vigezzite(Ca,Ce)(Nb,Ti)2O6
4.DF.15Murataite-(Y)(Y,Na)6Zn(Zn,Fe3+)4(Ti,Nb,Na)12O29(O,F,OH)10F4
18.1.1LithiotantiteLi(Ta,Nb)3O8
18.1.2LueshiteNaNbO3
18.1.3NatroniobiteNaNbO3
18.1.4FranconiteNa2Nb4O11 · 9H2O
18.1.5NatrotantiteNa2Ta4O11
18.1.6IrtyshiteNa2(Ta,Nb)4O11
18.1.7Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31
18.1.8Hydropyrochlore(H2O,□)2Nb2(O,OH)6(H2O)
18.1.9CalciotantiteCaTa4O11
18.1.10RynersoniteCa(Ta,Nb)2O6
18.1.11Microlite Group
18.1.12BelyankiniteCa1-2(Ti,Nb)5O12 · 9H2O (?)
18.1.13Latrappite(Ca,Na)(Nb,Ti,Fe)O3
18.1.14Hochelagaite(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2O
18.1.15Bariomicrolite (of Hogarth 1977)
18.1.16ParabariomicroliteBaTa4O10(OH)2 · 2H2O
18.1.17Bariopyrochlore (of Hogarth 1977)
18.1.18AlumotantiteAlTaO4
18.1.19SimpsoniteAl4(Ta,Nb)3O13(OH,F)
18.1.20Sosedkoite(K,Na)5Al2(Ta,Nb)22O60
18.1.21Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6
18.1.22Stannomicrolite (of Hogarth 1977)
18.1.23Foordite(Sn,Pb)(Nb,Ta)2O6
18.1.25Plumbopyrochlore (of Skorobogatova et al.)
18.1.26Plumbomicrolite (of Hogarth 1977)
18.1.27StibiocolumbiteSb(Nb,Ta)O4
18.1.28StibiotantaliteSb(Ta,Nb)O4
18.1.29Natrobistantite
18.1.30Cesplumtantite(Cs,Na)2(Pb,Sb3+)3Ta8O24
18.1.31Stibiomicrolite (of Groat et al.)
18.1.32Cesstibtantite
18.1.34BismutotantaliteBi(Ta,Nb)O4
18.1.35Bismutomicrolite (of Hogarth 1977)
18.1.36Tantalite-(Mn)MnTa2O6
18.1.37Gerasimovskite(Mn,Ca)(Nb,Ti)5O12 · 9H2O
18.1.38Tapiolite-(Mn)(Mn,Fe)(Ta,Nb)2O6
18.1.39Columbite-(Mn)(Mn,Fe)(Nb,Ta)2O6
18.1.40WodginiteMn(Sn,Ta)Ta2O8
18.1.41Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8
18.1.42Columbite-(Fe)FeNb2O6
18.1.43Tantalite-(Fe)FeTa2O6
18.1.44Columbite(Fe,Mn)(Nb,Ta)2O6
18.1.45Tantalite(Fe,Mn)(Ta,Nb)2O6
18.1.46Tapiolite(Fe,Mn)(Ta,Nb)2O6
18.1.47Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
18.1.48Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6
18.1.50Strüverite(Ti,Ta,Fe)O2
18.1.51 Staringite(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

Other Names for Changbaiite

Name in Other Languages:
German:Changbaiit
Spanish:Changbaiita

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 Changbaiite

Reference List:
Detachment No. 8, Comprehensive Geological Brigade of Tonghua Region and the Laboratory of Petrology and Mineralogy Laboratory and Jilin Institute of Geological Science (1978): Changbaiite (PbNb2O6), a new mineral of lead and niobium from eastern Kirin, China. Acta Geologica Sinica 52(1), 53-62 (in Chinese with English abstract). - American Mineralogist (1979), 64, 242 (abstract).

Comptes rendu de l’Académie des sciences de Paris 263C, 217-219.

Internet Links for Changbaiite

Localities for Changbaiite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
China
 
  • Jilin Province (Manchuria; Dongbei Region)
    • Tonghua Prefecture
      • Ji'an Co.
Detachment No. 8, Comprehensive Geological Brigade of Tonghua Region and the Laboratory of Petrology and Mineralogy Laboratory and Jilin Institute of Geological Science (1978): Acta Geologica Sinica 52 (1), 53-62.
USA
 
  • Texas
    • Hudspeth Co.
Am. Min. 74:865-869 (1989)
Mineral and/or Locality  
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