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Columbite-(Mn)

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Formula:
(Mn,Fe)(Nb,Ta)2O6
System:
Orthorhombic
Hardness:
6
Member of:
Columbite-(Fe)-Columbite-(Mn) Series.

Formerly known as manganocolumbite.

Classification of Columbite-(Mn)

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
4.DB.35

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
B : With medium-sized cations; chains of edge-sharing octahedra
8.3.2.4

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
18.1.39

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
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Physical Properties of Columbite-(Mn)

Hardness (Mohs):
6

Crystallography of Columbite-(Mn)

Crystal System:
Orthorhombic
Cell Parameters:
a = 5.76Å, b = 14.43Å, c = 5.08Å
Ratio:
a:b:c = 0.399 : 1 : 0.352
Unit Cell Volume:
V 422.23 ų (Calculated from Unit Cell)
Comment:
Strong subcell has b/3.
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Columbite-(Mn)

Type:
Biaxial (-)
Dispersion:
r > v strong

Chemical Properties of Columbite-(Mn)

Formula:
(Mn,Fe)(Nb,Ta)2O6
Essential elements:
All elements listed in formula:

Relationship of Columbite-(Mn) to other Species

Series:
Forms a series with Columbite-(Fe) (see here)
Member of:
Other Members of Group:
Columbite-(Fe)FeNb2O6
Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6
Qitianlingite(Fe,Mn)2(Nb,Ta)2WO10
Tantalite-(Fe)FeTa2O6
Tantalite-(Mg)(Mg,Fe2+)(Ta,Nb)2O6
Tantalite-(Mn)MnTa2O6
4.DB.05ArgutiteGeO2
4.DB.05CassiteriteSnO2
4.DB.05PlattneritePbO2
4.DB.05PyrolusiteMnO2
4.DB.05RutileTiO2
4.DB.05TripuhyiteFe3+Sb5+O4
4.DB.05TugarinoviteMoO2
4.DB.05Varlamoffite(Sn,Fe)(O,OH)2
4.DB.10ByströmiteMgSb2O6
4.DB.10Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
4.DB.10Tapiolite-(Mn)(Mn,Fe)(Ta,Nb)2O6
4.DB.10OrdoñeziteZnSb2O6
4.DB.15bAkhtenskiteε-Mn4+O2
4.DB.15cNsutite(Mn4+,Mn2+)(O,OH)2
4.DB.15aParamontroseiteV4+O2
4.DB.15aRamsdelliteMn4+O2
4.DB.20Scrutinyitealpha-PbO2
4.DB.25IshikawaiteU4+Fe2+Nb2O8
4.DB.25Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8
4.DB.25Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
4.DB.25SrilankiteZrTi2O6
4.DB.25Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
4.DB.25Calciosamarskite(Ca,Fe3+,Y)2(Nb,Ta,Ti)2O8
4.DB.25Samarskite-(Yb)(Yb,Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
4.DB.30FerberiteFeWO4
4.DB.30HübneriteMnWO4
4.DB.30Sanmartinite(Zn,Fe)WO4
4.DB.30KrasnoselskiteCoWO4
4.DB.30HeftetjerniteScTaO4
4.DB.30HuanzalaiteMgWO4
4.DB.35Columbite-(Fe)FeNb2O6
4.DB.35Tantalite-(Fe)FeTa2O6
4.DB.35Tantalite-(Mn)MnTa2O6
4.DB.35Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6
4.DB.35Qitianlingite(Fe,Mn)2(Nb,Ta)2WO10
4.DB.35Magnocolumbite
4.DB.35Tantalite-(Mg)(Mg,Fe2+)(Ta,Nb)2O6
4.DB.40FerrowodginiteFeSnTa2O8
4.DB.40LithiotantiteLi(Ta,Nb)3O8
4.DB.40LithiowodginiteLiTa3O8
4.DB.40TitanowodginiteMnTiTa2O8
4.DB.40WodginiteMn(Sn,Ta)Ta2O8
4.DB.40FerrotitanowodginiteFe2+TiTa2O8
4.DB.40WolframowodginiteMn(Mn,Sn,Fe,Ta)(W,Ta,Nb)2O8
4.DB.45TivaniteV3+TiO3(OH)
4.DB.50Carmichaelite(Ti,Cr,Fe)[O2-x(OH)x]
4.DB.55AlumotantiteAlTaO4
4.DB.60Biehlite((Sb,As)O)2[MoO4]
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
18.1.24ChangbaiitePbNb2O6
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
18.1.40WodginiteMn(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 Columbite-(Mn)

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 Columbite-(Mn)

Reference List:
American Mineralogist (1995): 80: 613-619.

E. J. Kinast, O. Isnard, J. B. M. da Cunha, M. A. Z. de Vasconcellos and C. A. dos Santos (2011): A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites. J. Appl. Crystallogr. 44, 738-746.

Internet Links for Columbite-(Mn)

Specimens:
The following Columbite-(Mn) specimens are currently listed for sale on minfind.com.

Localities for Columbite-(Mn)

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.
Mineral and/or Locality  
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