Columbite-(Mg) (original) (raw)
A valid IMA mineral species
About Columbite-(Mg)Hide
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Formula:
(Mg,Fe,Mn)(Nb,Ta)2O6
Colour:
Black to brownish-black
Crystal System:
Orthorhombic
Name:
Originally referred to as magnocolumbite, it was changed to the current form in 2008 (Burke 2008). The name refers to the relationship to the other columbite group species, with dominant magnesium. The columbite group name refers to columbium, an old name for the element niobium.
This page provides mineralogical data about Columbite-(Mg).
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2541:2
c4cf1499-d1f9-48ab-bac6-6f0a8e3b6fd8
IMA Classification of Columbite-(Mg)Hide
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Type description reference:
Classification of Columbite-(Mg)Hide
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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
8.3.2.5
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
18.1.48
18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Clb-Mg | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Columbite-(Mg)Hide
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Transparency:
Translucent, Opaque
Colour:
Black to brownish-black
Density:
5.17 g/cm3 (Measured) 5.23 g/cm3 (Calculated)
Comment:
Measured by suspension
Optical Data of Columbite-(Mg)Hide
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RI values:
_n_α = 2.330 - 2.360 _n_γ = 2.390 - 2.440
δ = 0.060 - 0.080
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Comments:
Brownish yellow on X to brownish-red on Z
Chemistry of Columbite-(Mg)Hide
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Mindat Formula:
(Mg,Fe,Mn)(Nb,Ta)2O6
Crystallography of Columbite-(Mg)Hide
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Crystal System:
Orthorhombic
Cell Parameters:
a = 5.65 Å, b = 14.17 Å, c = 5.02 Å
Ratio:
a:b:c = 0.399 : 1 : 0.354
Unit Cell V:
401.90 ų (Calculated from Unit Cell)
Twinning:
Commonly observed
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0013945 | Columbite-(Mg) | Pagola S, Carbonio R E, Alonso J A, Fernandez-Diaz M T (1997) Crystal structure refinement of Mg Nb2 O6 columbite from neutron powder diffraction data and study of the ternary system MgO-Nb2O5-NbO, with evidence of formation of new reduced pseudobrookite Mg5-xNb4+xO15-d (1.14<x<1.60) phases<="" i=""> Journal of Solid State Chemistry 134 76-84</x<1.60)> | 1997 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.955 Å | (10) |
| 1.723 Å | (9) |
| 1.535 Å | (9) |
| 1.470 Å | (9) |
| 1.454 Å | (9) |
| 1.197 Å | (9) |
| 1.105 Å | (9) |
| 1.771 Å | (8) |
| 1.738 Å | (8) |
| 3.63 Å | (7) |
| 1.897 Å | (7) |
| 1.139 Å | (7) |
Geological EnvironmentHide
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Type Occurrence of Columbite-(Mg)Hide
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Associated Minerals at Type Locality:
Reference:
Mathias, V.V., Rossovskii, L.N., Shostatskii, A.N., Kumskova, N.M. (1963) Magnocolumbite, a new mineral. Doklady Akademii Nauk SSSR: 148: 420-423.
Synonyms of Columbite-(Mg)Hide
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Other Language Names for Columbite-(Mg)Hide
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Relationship of Columbite-(Mg) to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 4.DB. | Nioboheftetjernite | ScNbO4 | Mon. 2/m : _P_21/b |
|---|---|---|---|
| 4.DB. | Shakhdaraite-(Y) | ScYNb2O8 | Mon. 2/m : _P_2/b |
| 4.DB. | Nioboixiolite-(Mn2+) | (Nb0.67Mn2+0.33)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB. | Nioboixiolite-([]) | (Nb0.8◻0.2)4+O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.05 | Argutite | GeO2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.05 | Cassiterite | SnO2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.05 | Plattnerite | PbO2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.05 | Pyrolusite | Mn4+O2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.05 | Rutile | TiO2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.05 | Tripuhyite | Fe3+Sb5+O4 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.05 | Tugarinovite | MoO2 | Mon. 2/m : _P_21/b |
| 4.DB.05 | Varlamoffite | (Sn,Fe)(O,OH)2 | |
| 4.DB.10 | Byströmite | MgSb2O6 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n m m |
| 4.DB.10 | Tapiolite-(Fe) | Fe2+Ta2O6 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.10 | Tapiolite-(Mn) | Mn2+Ta2O6 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.10 | Ordoñezite | ZnSb2O6 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.10 | Tredouxite | NiSb2O6 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_42/m n m |
| 4.DB.15b | Akhtenskite | ε-Mn4+O2 | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m m c |
| 4.DB.15c | Nsutite | (Mn4+,Mn2+)(O,OH)2 | Hex. |
| 4.DB.15a | Paramontroseite | V4+O2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 4.DB.15a | Ramsdellite | Mn4+O2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 4.DB.20 | Scrutinyite | α-PbO2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.25 | Ishikawaite | U4+Fe2+Nb2O8 | Mon. |
| 4.DB.25 | Samarskite-(Y) | YFe3+Nb2O8 | Mon. 2/m : _P_2/b |
| 4.DB.25 | Srilankite | ZrTi2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.25 | Yttrocolumbite-(Y) | Y(U4+,Fe2+)Nb2O8 | |
| 4.DB.25 | Calciosamarskite | (Ca,U4+)Fe3+(Nb,Ta,Ti)2O8 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 4.DB.25 | Samarskite-(Yb) | YbFe3+(Nb,Ta)2O8 | Mon. 2/m : _P_2/b |
| 4.DB.25 | Ixiolite-(Fe2+) | (Ta0.67Fe2+0.33)O2 | Orth. |
| 4.DB.25 | Ixiolite-(Mn2+) | (Ta0.67Mn2+0.33)O2 | Orth. |
| 4.DB.30 | Ferberite | FeWO4 | Mon. 2/m : _P_2/b |
| 4.DB.30 | Hübnerite | MnWO4 | Mon. 2/m : _P_2/b |
| 4.DB.30 | Sanmartinite | (Zn,Fe)WO4 | Mon. 2/m : _P_21/b |
| 4.DB.30 | Krasnoselskite | CoWO4 | Mon. |
| 4.DB.30 | Heftetjernite | ScTaO4 | Mon. 2/m : _P_2/b |
| 4.DB.30 | Huanzalaite | MgWO4 | Mon. 2/m : _P_2/b |
| 4.DB.30 va | Wolframite Group | ||
| 4.DB.30 | Rossovskyite | (Fe3+,Ta)(Nb,Ti)O4 | Mon. 2/m : _P_2/b |
| 4.DB.35 | Columbite-(Fe) | Fe2+Nb2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.35 | Tantalite-(Fe) | Fe2+Ta2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.35 | Columbite-(Mn) | Mn2+Nb2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.35 | Tantalite-(Mn) | Mn2+Ta2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.35 | Qitianlingite | (Fe,Mn)2(Nb,Ta)2WO10 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 4.DB.35 | Tantalite-(Mg) | (Mg,Fe2+)(Ta,Nb)2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.35 | Tantalaeschynite-(Ce) | Ce(TiTa)O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 4.DB.40 | Ferrowodginite | Fe2+Sn4+Ta2O8 | Mon. 2/m : _B_2/b |
| 4.DB.40 | Lithiotantite | LiTa3O8 | Mon. 2/m : _P_21/b |
| 4.DB.40 | Lithiowodginite | LiTa3O8 | Mon. 2/m : _B_2/b |
| 4.DB.40 | Titanowodginite | Mn2+TiTa2O8 | Mon. 2/m : _B_2/b |
| 4.DB.40 | Wodginite | Mn2+Sn4+Ta2O8 | Mon. 2/m : _B_2/b |
| 4.DB.40 | Ferrotitanowodginite | Fe2+TiTa2O8 | Mon. 2/m : _B_2/b |
| 4.DB.40 | Tantalowodginite | (Mn2+0.5◻0.5)TaTa2O8 | Mon. 2/m : _B_2/b |
| 4.DB.40 | Wolframowodginite | Mn(Mn,Sn,Fe,Ta)(W,Ta,Nb)2O8 | |
| 4.DB.45 | Tivanite | V3+TiO3(OH) | Mon. 2/m : _P_21/b |
| 4.DB.50 | Carmichaelite | (Ti,Cr,Fe)[O2-x(OH)x] | Mon. 2/m : _P_21/b |
| 4.DB.55 | Alumotantite | AlTaO4 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DB.60 | Biehlite | ((Sb,As)O)2[MoO4] | Mon. 2/m : _B_2/b |
Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Columbite-(Mg)Hide
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References for Columbite-(Mg)Hide
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Localities for Columbite-(Mg)Hide
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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
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| Italy | |
|---|---|
| Tuscany Livorno Province Campo nell'Elba San Piero in Campo ⓘ Fonte del Prete | Adriano Perugini found |
| ⓘ Grotta d'Oggi | Adriano Perugini found |
| Madagascar | |
| Betsiboka ⓘ Tsaratanàna District | Listed in www.excaliburmineral.com- ... |
| Romania | |
| Sibiu County Lotru-Cibin Mountains ⓘ Contu-Negovanu Pegmatite Field | Androne et al. (2005) +1 other reference |
| Russia | |
| Chelyabinsk Oblast Vishnevye Mountains ⓘ Buldym Lake | Nedosekova (2007) |
| Sverdlovsk Oblast Rezhevsky District Lipovsk pegmatite field ⓘ Lipovka Mine (Lipovskoe Mine; Lipovskaya Mine; Lipovaya Mine) | Igor.V. Pekov (2008) |
| Spain | |
| Canary Islands Santa Cruz de Tenerife Province Tenerife Candelaria Barranco Hondo ⓘ Lava flow | Dill et al. (2023) |
| Sweden | |
| Gävleborg County Nordanstig Hassela ⓘ Stakholmen quarry | Natural History Museum +2 other references |
| Tajikistan (TL) | |
| Gorno-Badakhshan Pyandzh River Valley ⓘ Muzeinaya pegmatite vein (Muzeinyi pegmatite) (TL) | Mathias et al. (1963) +3 other references |