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Columbite-(Fe)-Tantalite-(Fe) Series

A solid-solution series between two end-member minerals

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Photos of Columbite-(Fe)-Tantalite-(Fe) Series (625)Recorded Ages and Analyses Discuss Columbite-(Fe)-Tantalite-(Fe) Series

Columbite-(Fe)-Tantalite-(Fe) Series Gallery Search Photos of Columbite-(Fe)-Tantalite-(Fe) Series

Edit Columbite-(Fe)-Tantalite-(Fe) Series Add Synonym Edit CIF structures Clear Cache

Columbite-(Fe)

Fillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA

Columbite-(Fe)

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA

Columbite-(Fe)

Ivigtut Mine, Ivigtut stock, Arsuk Fjord, Sermersooq, Greenland

Columbite-(Fe)

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany

Columbite-(Fe)

Fillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA

Columbite-(Fe)

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA

Columbite-(Fe)

Ivigtut Mine, Ivigtut stock, Arsuk Fjord, Sermersooq, Greenland

Columbite-(Fe)

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany

Columbite-(Fe)

Fillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA

Columbite-(Fe)

Fisher Quarry, Topsham, Sagadahoc County, Maine, USA

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About Columbite-(Fe)-Tantalite-(Fe) SeriesHide

Crystal System:

Orthorhombic

Series Formula:

Fe²⁺Nb₂O₆ to Fe²⁺Ta₂O₆

A series between Columbite-(Fe) and Tantalite-(Fe)

Unique IdentifiersHide

Mindat ID:

8668

Long-form identifier:

mindat:1:1:8668:0

Similar NamesHide

Calamaite	A valid IMA mineral species	Na₂TiO(SO₄)₂ · 2H₂O
Calamite	A synonym of Tremolite
Colimaite	A valid IMA mineral species	K₃VS₄
Colomite	A synonym of Roscoelite
Columbite	A synonym of 'Columbite-(Fe)-Columbite-(Mn) Series'
Columbite-(Fe)	A valid IMA mineral species - grandfathered	Fe²⁺Nb₂O₆
Columbite-(Mg)	A valid IMA mineral species	(Mg,Fe,Mn)(Nb,Ta)₂O₆
Columbite-(Mn)	A valid IMA mineral species - grandfathered	Mn²⁺Nb₂O₆
Columbite-(Mn)-Tantalite-(Mn) Series	A solid-solution series between two end-member minerals
Kolumbite	A synonym of 'Columbite'
Kolymite	A valid IMA mineral species	Cu₇Hg₆

Age distributionHide

Recorded ages:

Proterozoic : 1082.3 ± 4.5 Ma to 906.3 ± 5.9 Ma - based on 11 recorded ages.

Sample ages:

Sample ID	Recorded age	Geologic Time	Dating method
1	906.3 ± 5.9 Ma	Tonian	Pb-U
2	908.9 ± 1.4 Ma	Tonian
3	910.2 ± 7.1 Ma	Tonian	Pb-U
4	911 ± 3 Ma	Tonian
5	991.6 ± 3.6 Ma	Tonian	Pb-U
6	1082.3 ± 4.5 Ma	Stenian	Pb-U

Sample references:

ID	Locality	Reference
1	Karlshus Mine, Råde, Østfold, Norway	Müller, Axel, Romer, Rolf L., Pedersen, Rolf-Birger (2017) The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites. The Canadian Mineralogist, 55 (2) 283-315 doi:10.3749/canmin.1600075
2	Vintergruben Quarry, Ånnerud, Våler, Østfold, Norway	Müller, Axel, Romer, Rolf L., Pedersen, Rolf-Birger (2017) The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites. The Canadian Mineralogist, 55 (2) 283-315 doi:10.3749/canmin.1600075
3	Steli Feldspar Quarry, Tveit, Iveland, Agder, Norway	Müller, Axel, Romer, Rolf L., Pedersen, Rolf-Birger (2017) The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites. The Canadian Mineralogist, 55 (2) 283-315 doi:10.3749/canmin.1600075
4	Hidra, Flekkefjord, Agder, Norway	Müller, Axel, Romer, Rolf L., Pedersen, Rolf-Birger (2017) The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites. The Canadian Mineralogist, 55 (2) 283-315 doi:10.3749/canmin.1600075
5	Thor's Mine, Vats, Vindafjord, Rogaland, Norway	Müller, Axel, Romer, Rolf L., Pedersen, Rolf-Birger (2017) The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites. The Canadian Mineralogist, 55 (2) 283-315 doi:10.3749/canmin.1600075
6	Tangen Feldspar Mine, Kragerø, Telemark, Norway	Müller, Axel, Romer, Rolf L., Pedersen, Rolf-Birger (2017) The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites. The Canadian Mineralogist, 55 (2) 283-315 doi:10.3749/canmin.1600075

Chemical AnalysisHide

Oxide wt%:

	1	2	3	4	5
MgO	0,63 %	0,56 %
MnO	6,57 %	6,69 %	5.32 %	5.82 %	6.04 %
FeO	10,55 %	11,13 %	14.44 %	13.46 %	9.6 %
Sc₂O₃	1,69 %	1,38 %
TiO₂	2,38 %	2,35 %	1.64 %	0.36 %	0.81 %
Nb₂O₅	68,82 %	68,84 %	43.74 %	56.15 %	18.66 %
Ta₂O₅	9,01 %	9,18 %	27.99 %	19.55 %	61.79 %
SnO₂			3.79 %
WO₃			0.89 %
U₃O₈			0.08 %
UO₂					0.04 %
Total:	96 %	97 %	97.89 %	95.34 %	96.94 %

Sample references:

ID	Locality	Reference	Notes
1	Atagoyama, Koriyama City, Fukushima Prefecture, Japan	Matsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1
2	" "	Matsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1
3	Kawadgaon-Challanpara pegmatite field, Dantewada District, Chhattisgarh, India	Singh, Yamuna, Pandit, P. S. C., Bagora, Sanjay, Jain, P. K. (2017) Mineralogy, geochemistry, and genesis of co-genetic granite-pegmatite-hosted rare metal and rare earth deposits of the Kawadgaon area, Bastar craton, Central India. Journal of the Geological Society of India, 89 (2) 115-130 doi:10.1007/s12594-017-0574-2	Columbite-(Fe) from a granite pegmatite. EMPA analysis
4	Marlagalla-Allapatna, Mandya District, Karnataka, India	Sarbajna, Chanchal; Krishnamurthy, P.; Paul, A.K.; Banerjee, D.C. (2000) Mineralogical and Chemical Characteristics of Complexly-Zoned Columbite-Tantalite from the Rare Metal Pegmatites of Southern Karnataka. Journal of the Geological Society of India, 56 (5). 557-571 doi:10.17491/jgsi/2000/560508	The sample is EMPA analysed from 9 spots from core to rim. The Fe/Mn and Nb/Ta ratioes are variable, but all corresponds to columbite-(Fe). This analysis is from the core of the sample.
5	" "	Sarbajna, Chanchal; Krishnamurthy, P.; Paul, A.K.; Banerjee, D.C. (2000) Mineralogical and Chemical Characteristics of Complexly-Zoned Columbite-Tantalite from the Rare Metal Pegmatites of Southern Karnataka. Journal of the Geological Society of India, 56 (5). 557-571 doi:10.17491/jgsi/2000/560508	16 EMPA analyses from core to rim in this sample show a very variable composition with both Ta,Nb, Fe and Mn dominant zones. The core and an intermediate zone show a distinct tantalite-(Fe) composition.

Crystallography of Columbite-(Fe)-Tantalite-(Fe) SeriesHide

Crystal System:

Orthorhombic

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Temp (K)
0008842	Columbite-(Fe)	Tarantino S C, Zema M, Pistorino M, Domeneghetti M C (2003) High-temperature X-ray investigation of natural columbites Physics and Chemistry of Minerals 30 590-598	2003	San Jose de Safira, Minas Gerais, Brazil	293
0018629	Columbite-(Fe)	dos Santos C A, Zawislak L I, Kinast E J, Antonietti V, da Cunha J B M (2001) Crystal chemistry and structure of the orthorhombic (Fe,Mn)(Ta,Nb)2O6 family of compounds Brazilian Journal of Physics 31 616-631	2001	Brazil	293
0008843	Columbite-(Fe)	Tarantino S C, Zema M, Pistorino M, Domeneghetti M C (2003) High-temperature X-ray investigation of natural columbites Physics and Chemistry of Minerals 30 590-598	2003	San Jose de Safira, Minas Gerais, Brazil	573
0008844	Columbite-(Fe)	Tarantino S C, Zema M, Pistorino M, Domeneghetti M C (2003) High-temperature X-ray investigation of natural columbites Physics and Chemistry of Minerals 30 590-598	2003	San Jose de Safira, Minas Gerais, Brazil	873
0003851	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		293
0003848	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		293
0003847	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		293
0001436	Columbite-(Fe)	Wenger M, Armbruster T, Geiger C A (1991) Cation distribution in partially ordered columbite from the Kings Mountain pegmatite, North Carolina American Mineralogist 76 1897-1904	1991		293
0016267	Columbite-(Fe)	Bordet P, McHale A, Santoro A, Roth R (1986) Powder neutron diffraction study of ZrTiO4, Zr5Ti7O24 and FeNb2O6 _cod_database_code 1008356 Journal of Solid State Chemistry 64 30-46	1986		293
0001435	Columbite-(Fe)	Wenger M, Armbruster T, Geiger C A (1991) Cation distribution in partially ordered columbite from the Kings Mountain pegmatite, North Carolina American Mineralogist 76 1897-1904	1991		100
0003852	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		873
0003854	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		923
0003853	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		923
0003856	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		973
0003855	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		973
0003858	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		1073
0003857	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		1073
0003859	Columbite-(Fe)	Tarantino S C, Zema M (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study American Mineralogist 90 1291-1300	2005		1223

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Columbite-(Fe)'
loop_
_publ_author_name
'Tarantino S C'
'Zema M'
'Pistorino M'
'Domeneghetti M C'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 30 
_journal_year 2003
_journal_page_first 590
_journal_page_last 598
_publ_section_title
;
 High-temperature X-ray investigation of natural columbites
 Note: sample BRA3 at T = 20 C
;
_database_code_amcsd 0008842
_chemical_compound_source 'San Jose de Safira, Minas Gerais, Brazil'
_chemical_formula_sum 'Fe.747 Mn.215 Ti.027 Nb1.894 Ta.094 W.003 Sc.003 Ca.001 Sn.001 O6'
_cell_length_a 14.2880
_cell_length_b 5.7364
_cell_length_c 5.0562
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 414.415
_exptl_crystal_density_diffrn      5.524
_symmetry_space_group_name_H-M 'P b c n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '1/2+x,1/2+y,1/2-z'
  '1/2-x,1/2-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Fe2+A   0.00000   0.32890   0.25000   0.74700   0.00690
Mn2+A   0.00000   0.32890   0.25000   0.21500   0.00690
Ti4+A   0.00000   0.32890   0.25000   0.02700   0.00690
Nb5+B   0.16170   0.18020   0.74790   0.94700   0.00550
Ta5+B   0.16170   0.18020   0.74790   0.04700   0.00550
W6+B   0.16170   0.18020   0.74790   0.00150   0.00550
Sc3+B   0.16170   0.18020   0.74790   0.00150   0.00550
Ca2+B   0.16170   0.18020   0.74790   0.00050   0.00550
Sn4+B   0.16170   0.18020   0.74790   0.00050   0.00550
O1   0.09710   0.10340   0.06920   1.00000   0.00750
O2   0.08150   0.38270   0.59750   1.00000   0.00920
O3   0.24430   0.12380   0.41860   1.00000   0.00790
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Fe2+A 0.00610 0.00710 0.00750 0.00000 -0.00020 0.00000
Mn2+A 0.00610 0.00710 0.00750 0.00000 -0.00020 0.00000
Ti4+A 0.00610 0.00710 0.00750 0.00000 -0.00020 0.00000
Nb5+B 0.00490 0.00520 0.00630 0.00030 -0.00030 -0.00010
Ta5+B 0.00490 0.00520 0.00630 0.00030 -0.00030 -0.00010
W6+B 0.00490 0.00520 0.00630 0.00030 -0.00030 -0.00010
Sc3+B 0.00490 0.00520 0.00630 0.00030 -0.00030 -0.00010
Ca2+B 0.00490 0.00520 0.00630 0.00030 -0.00030 -0.00010
Sn4+B 0.00490 0.00520 0.00630 0.00030 -0.00030 -0.00010
O1 0.00810 0.00570 0.00880 0.00120 -0.00030 0.00120
O2 0.00850 0.00770 0.01140 0.00130 -0.00030 -0.00020
O3 0.00840 0.00720 0.00810 -0.00140 -0.00030 -0.00090

Synonyms of Columbite-(Fe)-Tantalite-(Fe) SeriesHide

Ferrocolumbite-Ferrotantalite Series

Common AssociatesHide

Associations Based on Photo Data:

2 photos of Columbite-(Fe)-Tantalite-(Fe) Series associated with Albite

Na(AlSi₃O₈)

Other InformationHide

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-(Fe)-Tantalite-(Fe) SeriesHide

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References for Columbite-(Fe)-Tantalite-(Fe) SeriesHide

Reference List:

Kinast, E. J., Isnard, O., da Cunha, J. B. M., de Vasconcellos, M. A. Z., dos Santos, C. A. (2011) A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites. Journal of Applied Crystallography, 44 (4). 738-746 doi:10.1107/s0021889811023211

Localities for Columbite-(Fe)-Tantalite-(Fe) SeriesHide

Showing 816 localities.

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.

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Locality ListHide

- 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.


Afghanistan
Kunar Dara-e-Pech District ⓘ Dara-e-Pech pegmatite field	[Columbite-(Fe)] Betts (n.d.)

Angola
Namibe Province Moçâmedes Giraúl pegmatite field ⓘ Type IV pegmatites	[Columbite-(Fe)] Antonio Olimpio Gonçalves et al. (2009) +1 other reference

Argentina
Catamarca Province Sierra de Ancasti El Portezuelo ⓘ El Portezuelo Granite	[Columbite-(Fe)] COLOMBO +1 other reference
Córdoba Province Cruz del Eje department Candelaria District ⓘ Gigante pegmatite	[Columbite-(Fe)] Minerals acquired from Mr. Nelson ...
Punilla Department San Roque District Tanti Cerro Blanco pegmatite district ⓘ El Criollo Mine	[Columbite-(Fe)] American Mineralogist (1978) +1 other reference
La Rioja Province Sanagasta department ⓘ La Chinchilla granite	[Columbite-(Fe)] Bardelli et al. (2018)
San Luis Province Coronel Pringles Department El Trapiche La Florida ⓘ San Luis Mine	[Tantalite-(Fe)] Galliski et al. (2011)
Totoral pegmatitic field ⓘ Independencia Argentina pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Galliski et al. (2015)
Santiago del Estero Province Ojo de Agua Department ⓘ Jasimampa prospect	[Columbite-(Fe)] Franchini et al. (2005)

Australia
Queensland City of Mount Isa ⓘ Mica Creek	[Columbite-(Fe), Tantalite-(Fe)] Costas Constantinides collection
Tablelands Region Kinrara National Park ⓘ Lava Plains	[Columbite-(Fe)] Sutherland
South Australia Pastoral Unincorporated Area Boolcoomatta Reserve (Boolcoomata Station) ⓘ Wiperaminga Hill (McMahon's Pegmatite; McMahon Quarry; Wiperaminga East; MC 2464; McMahon Feldspar Pty. Ltd; ML 4536)	Record of Sth.Aust. mines summary Olary ...
ⓘ Wiperaminga Hill West Quarry	[Columbite-(Fe)] Elliott et al. (2026)
Moolawatana Station (Moolawatana) Mt Babbage area (Inlier) ⓘ Yerila gneissic complex	[Columbite-(Fe), Tantalite-(Fe)] PA Wulser - unpublished data
Victoria East Gippsland Shire Glen Valley ⓘ Blue Jacket Tin Mine (Blue Jacket Reef)	[Columbite-(Fe)] Personally collected by Ryan Eagle in ...
ⓘ Knocker dyke (South Blue Jacket)	[Columbite-(Fe)] Eagle et al. (2015)
Western Australia Bridgetown-Greenbushes Shire Greenbushes tinfield ⓘ Greenbushes Mine	[Columbite-(Fe)] The Canadian Mineralogist
Coolgardie Shire Binneringie Station ⓘ Binneringie Tantalite (Bald Hill pegmatites; Woodline pegmatites)	[Tantalite-(Fe)] minedex
Gibraltar Goldfield ⓘ Lord Bob Gold Mine	[Columbite-(Fe)] Western Australian Mines Department (1947)
Nepean ⓘ Londonderry Li deposit	[Columbite-(Fe)] Jacobson (1997)
Spargoville ⓘ Giles Columbite-Beryl Pegmatite (Giles Prospect)	[Columbite-(Fe)] Min News 20:6 pp1
Cue Shire ⓘ Poona	[Tantalite-(Fe)] Marshall et al. (2016)
ⓘ Aga Khan Mine	[Columbite-(Fe)] - (2002)
ⓘ Emerald Pool mine (Emerald Gem mine; East Poona mine)	[Tantalite-(Fe)] Marshall et al. (2016)
Derby-West Kimberley Shire Napier Downs Station ⓘ Clara Hill	[Tantalite-(Fe)] minedex
Donnybrook-Balingup Shire Balingup ⓘ Ferndale pegmatite	[Columbite-(Fe)] - (Perth 2007) +2 other references
East Pilbara Shire Pilgangoora ⓘ Green's Well pegmatite (Green's Tank)	[Columbite-(Fe), Tantalite-(Fe)] Jacobson et al. (2007)
ⓘ MC80	[Columbite-(Fe)] Jacobson et al. (2007)
ⓘ Pilgangoora pegmatites	[Columbite-(Fe)] Jacobson et al. (2007)
Halls Creek Shire ⓘ Cummins Range complex (Minneroo Pool)	[Columbite-(Fe)] Downes et al. (2014)
Port Hedland Shire Wallareenya Station ⓘ Bore Creek	[Tantalite-(Fe)] minedex
Ravensthorpe Shire Ravensthorpe ⓘ Mount Cattlin Mine	[Tantalite-(Fe)] Jacobson et al. (2007)
Upper Gascoyne Shire Yinnietharra ⓘ Arthur River pegmatites	[Columbite-(Fe), Tantalite-(Fe)] Jacobson et al. (2007) +1 other reference
ⓘ Bismuth Hill (The Cairn)	[Columbite-(Fe)] Jacobson et al. (2007) +2 other references
ⓘ Cairn Mining Centre	[Columbite-(Fe)] Jacobson et al. (2007) +2 other references
ⓘ Kempton Brothers Beryl Mine ?	[Columbite-(Fe)] R Bottrill collection (unconfirmed) +3 other references
ⓘ Nardoo Hill (Beryl Hill)	[Columbite-(Fe), Tantalite-(Fe)] Jacobson et al. (2007)
Yilgarn shire Mount Holland pegmatite field ⓘ Forrestania Rubellite pegmatite	[Columbite-(Fe)] - (Perth 2007) +2 other references

Austria
Carinthia Spittal an der Drau District Millstatt lake ⓘ Laggerhof	[Columbite-(Fe)] Carinthia II (2012) +1 other reference
Spittal an der Drau Lieser ravine ⓘ Lippnik feldspar quarry	[Tantalite-(Fe)] Walter (1998)
Wolfsberg ⓘ Feldspar quarry	[Columbite-(Fe), Tantalite-(Fe)] Niedermayr et al. (1995)
Wolfsberg District Frantschach-Sankt Gertraud Brandrücken ⓘ Spodumene prospect	[Columbite-(Fe)] Č +2 other references
ⓘ Grillitschhütte	[Columbite-(Fe)] Niedermayr et al. (1995)
Lower Austria Horn District Gars am Kamp Maiersch ⓘ Doppelbachgraben (Tobelbachgraben)	[Columbite-(Fe)] Kolitsch (2018)
Krems-Land District Paudorf Meidling ⓘ Granulite quarry (Asamer quarry; Wanko gravel works)	[Columbite-(Fe)] Kolitsch et al. (2023)
Spitz ⓘ Huthof ("Am Hut"; Buchberg)	[Columbite-(Fe)] HEHENBERGER (1996)
ⓘ Radlbachtal (Radlgraben; Huthof)	[Columbite-(Fe)] HEHENBERGER (1996)
ⓘ Windeckberg	[Columbite-(Fe)] Kolitsch et al. (2020)
Weinzierl am Walde ⓘ Blocherleitengraben	[Columbite-(Fe)] Kolitsch (2017)
Melk District Weiten ⓘ Weiterndorf	[Columbite-(Fe)] Kolitsch (2016)
Zwettl District Kottes-Purk Fohra ⓘ Trastallhof	[Columbite-(Fe)] Löffler et al. (2018)
Styria Deutschlandsberg District Deutschlandsberg Wildbachgraben ⓘ Gupper quarry	[Columbite-(Fe)] Postl et al. (1979)
Upper Austria Freistadt District Pregarten ⓘ Meitschenhof	[Columbite-(Fe)] Arthofer (2005)
Grieskirchen District Pram ⓘ Pram river	[Tantalite-(Fe)] Boehringer (2026)
Perg District Luftenberg an der Donau ⓘ Luftenberg quarries (Steininger quarry)	[Columbite-(Fe)] Meixner (1977) +1 other reference

Bolivia
Santa Cruz Ñuflo de Chavez Province La Bella ⓘ La Verde Mine (Mina Verde)	[Columbite-(Fe)] Federico Ahlfeld and Alejandro Schneider-Scherbina (1964)
ⓘ Ñuflo de Chavez mine	[Columbite-(Fe)] Dr. Fritz Berndt analysis.
San Agustín ⓘ La Negra mine (Miramonte Mine)	[Columbite-(Fe)] Petrov (n.d.)
San Ramón ⓘ El Paraíso Mine	[Columbite-(Fe)] Josep Sanchez-laFuente (INTAN S.L.)

Brazil
Ceará Icó Icozinho ⓘ Icozinho pegmatite	[Columbite-(Fe)] Revista Brasileira de Geociências 21 (1)
ⓘ Mata Azul pegmatitic field	[Columbite-(Fe)] Queiroz (2016)
Minas Gerais Coronel Murta ⓘ Morro Redondo mine	[Tantalite-(Fe)] Richard Dale Collection
ⓘ Divinésia	[Columbite-(Fe)] Leonardo
Divino das Laranjeiras Linópolis ⓘ Pomarolli farm	[Tantalite-(Fe)] Collection of Michael G. Shaw
Galiléia Laranjeiras ⓘ Ênio claim	[Columbite-(Fe)] Cassedanne et al. (1981)
Governador Valadares Golconda mining district ⓘ Faria claim	[Columbite-(Fe)] Menezes (n.d.)
ⓘ Ipê mine	[Columbite-(Fe)] Jessica Simonoff photo
ⓘ Golconda pegmatite field	[Columbite-(Fe), Tantalite-(Fe)] Josef Vajdak (Peque Rare Minerals)
Itinga Taquaral Piauí valley ⓘ Cachoeira mine	[Columbite-(Fe), Tantalite-(Fe)] Dias et al. (2015)
Jaguaraçu ⓘ Jaguaraçu pegmatite	[Columbite-(Fe)] Cassedanne et al. (1994)
Malacacheta ⓘ São Pedro claim	[Columbite-(Fe)] Fabre (n.d.)
Sabinópolis ⓘ Grota da Generosa mine	[Columbite-(Fe)] Ricardo Scholz
ⓘ Teófilo Otoni	[Columbite-(Fe)] dan weinrich +1 other reference
Paraíba Frei Martinho ⓘ Mourão pegmatite	[Columbite-(Fe)] Beurlen et al. (2008)
Nova Palmeira ⓘ Corredor pegmatite	[Columbite-(Fe)] Beurlen et al. (2008)
ⓘ Roncadeira pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Beurlen et al. (2008) +1 other reference
Pedra Lavrada ⓘ Alto Feio	[Columbite-(Fe)] Beurlen et al. (2008)
Picuí ⓘ Cortume pegmatite	[Columbite-(Fe)] Beurlen et al. (2008)
Rio Grande do Norte Acari ⓘ Pitombeira pegmatite	[Columbite-(Fe)] Beurlen et al. (2008)
Carnaúba dos Dantas ⓘ Taboa pegmatite	[Columbite-(Fe)] Beurlen et al. (2008)
Equador ⓘ Fazenda Turmalina pegmatite	[Columbite-(Fe)] Beurlen +3 other references
ⓘ Mamões pegmatite	[Columbite-(Fe)] Baumgartner et al. (2006)
Parelhas ⓘ Boqueirão pegmatite	[Columbite-(Fe)] Strmić Palinkaš +5 other references
ⓘ Carcará pegmatite	[Tantalite-(Fe)] Beurlen et al. (2008)
ⓘ Carnaúbinha pegmatite	[Columbite-(Fe)] Baumgartner et al. (2006)
ⓘ Combi pegmatite	[Columbite-(Fe)] Baumgartner et al. (2006)

Bulgaria
Pazardzhik Province Velingrad Municipality ⓘ Grantcharitsa tungsten deposit	[Columbite-(Fe)] Tarassov et al. (2022)

Burundi
Cibitoke Province ⓘ Butara	[Columbite-(Fe)] The Royal Museum for Central Africa (RMCA) +1 other reference
ⓘ N'Dora	[Columbite-(Fe)] Melcher et al. (2015)

Cambodia
Pailin Province ⓘ Pailin District	[Columbite-(Fe)] Filina et al. (2019)

Canada
British Columbia Golden Mining Division ⓘ KIN property	[Columbite-(Fe)] Caudle +1 other reference
Kamloops Mining Division Blue River carbonatites ⓘ Fir carbonatite	[Columbite-(Fe)] Chudy T et al. (2014)
ⓘ Verity claim	[Columbite-(Fe)] George J. Simandl (2001)
ⓘ Specimen pit	[Columbite-(Fe)] Blue River Carbonatites et al. (http://www.commerceresources.com/i/pdf/05-BCGOVRREPORT.pdf)
Omineca Mining Division Williston Lake ⓘ Aley Deposit (Aley Creek Carbonatite Complex)	[Columbite-(Fe)] Taseko
Revelstoke Mining Division Revelstoke ⓘ Mount Begbie	[Columbite-(Fe)] Dixon et al. (2014)
Manitoba Lac-du-Bonnet area Bernic Lake ⓘ Buck claim	[Columbite-(Fe)] Econ Geol (1995)
ⓘ Pegli pegmatite	[Columbite-(Fe)] Econ Geol (1995)
ⓘ Tanco Mine	[Columbite-(Fe)] 153-155. +1 other reference
Cat Lake - Winnipeg River pegmatite field ⓘ Huron Claim pegmatite	[Columbite-(Fe)] Paul (1984) +1 other reference
Shatford Lake ⓘ Shatford Lake pegmatites	[Columbite-(Fe)] [AmMin 85:1324]
Newfoundland and Labrador Newfoundland ⓘ Hydra pegmatite	[Columbite-(Fe)] Malay et al. (2026)
Northwest Territories ⓘ Blachford Lake alkaline complex	[Columbite-(Fe)] Feng et al. (2015)
ⓘ Thor Lake syenite complex	[Columbite-(Fe)] Sheard et al. (2012)
North Slave Region Blachford Lake alkaline complex Thor Lake syenite complex ⓘ Nechalacho deposit	[Columbite-(Fe)] Pinckston et al. (1995) +3 other references
Yellowknife Pegmatite field ⓘ Moose II pegmatite (ELK; Beck; DeStaffany)	[Columbite-(Fe), Tantalite-(Fe)] Anderson et al. (2013)
ⓘ Redout Lake Pegmatite	[Columbite-(Fe)] Wise et al. (1990)
Nova Scotia Lunenburg Co. New Ross ⓘ Keddy prospect (Lantz pegmatite; Keddy pegmatite)	[Columbite-(Fe)] O'Reilly et al. (1982)
Pictou Co. ⓘ Georgeville	[Columbite-(Fe)] Hay (2000)
Nunavut ⓘ Chantrey Inlet pegmatite field	[Columbite-(Fe), Tantalite-(Fe)] P.B. Tomascak et al. (1994)
Qikiqtaaluk Region Baffin Island Foxe pegmatite field ⓘ PLEX pegmatite	[Columbite-(Fe)] P.B. Tomascak et al. (1994)
Ontario Kenora District Pakeagama Lake Area PAK Lithium Project ⓘ Pakeagama Lake pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Breaks
Paterson Lake Area ⓘ Marko’s pegmatite	[Columbite-(Fe), Tantalite-(Fe)] ontariominerals.com +2 other references
ⓘ Separation Rapids Lithium Project (Separation Lake area)	[Columbite-(Fe), Tantalite-(Fe)] Avalon Advanced Materials Inc.
Skinner Lake Area ⓘ Musselwhite Mine	[Columbite-(Fe)] Taylor et al. (2001)
Nipissing District Butt Township ⓘ Ryan Mann and Sheehan claims	[Columbite-(Fe)] Ercit (1994)
ⓘ Sheehan beryl occurrence	[Columbite-(Fe)] Ercit (1994)
Renfrew County Brudenell-Lyndoch-and-Raglan Lyndoch Township ⓘ Quadeville area	[Columbite-(Fe)] Josef Vajdak (2008)
ⓘ Beryl Pit	[Columbite-(Fe)] Ulrike Kullik specimen (ID by EDS at ROM) +1 other reference
ⓘ Rose Quartz Pit	[Columbite-(Fe)] Pit owers (pers. comm.) +2 other references
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH)	[Columbite-(Fe)] HORVÁTH et al. (2000)
Nord-du-Québec Nunavik ⓘ Eldor Carbonatite Complex (Eldor carbonatite)	[Columbite-(Fe)] Laferrière (2011)
ⓘ Misery Lake alkaline complex	[Columbite-(Fe)] Petrella (2013)
ⓘ Qalluviartuuq Intrusive Complex	[Columbite-(Fe)] Pierre-Alain Wulser

China
Anhui Huangshan She Co. ⓘ Huangshan pluton	[Columbite-(Fe)] Duan et al. (2025)
Lu'an Jinzhai County ⓘ Shapinggou Mo deposit	[Columbite-(Fe)] Huaidong Zhang et al. (2012)
Fujian Nanping Yanping District Nanping pegmatite field ⓘ Pegmatite No. 31	[Columbite-(Fe), Tantalite-(Fe)] Can Rao et al. (2009) +2 other references
Guangdong Zhaoqing Guangning County ⓘ Hongshan Mine	[Columbite-(Fe)] Smith et al. (2005)
Guangxi Guilin Gongcheng Co. ⓘ Limu Ta-Sn ore field	[Columbite-(Fe)] Hui Li et al. (1983)
Ziyuan Co. Miaoershan-Yuechengling ore field Yuechengling batholith Mao’antang Nb-Ta deposit Mao’antang ore block ⓘ Mao’antang pegmatite No.701	[Columbite-(Fe)] Zhao et al. (2025)
Hainan Ding'an Co. Penglai ⓘ Penglai Gem deposit	[Columbite-(Fe)] Zhili Qiu et al. (2001)
Heilongjiang Hegang Luobei County ⓘ Luobei pegmatite field	[Columbite-(Fe)] Deshi Lu (1993)
Hubei Shiyan Zhushan Co. ⓘ Miaoya carbonatite	[Columbite-(Fe)] Li (1982) +3 other references
Hunan Yongzhou Jianghua Co. ⓘ Helukou REE deposit	Zhijun Shen et al. (2003)
Yueyang Pingjiang Co. ⓘ Gaotan pegmatite field	[Columbite-(Fe)] National Geological Archives of China ...
Inner Mongolia Baotou City Bayan Obo mining district ⓘ Bayan Obo deposit	[Columbite-(Fe)] Qing-chang (1981) +3 other references
ⓘ East Mine	[Columbite-(Fe)] Liu et al. (2022)
ⓘ Eastern contact zone	[Columbite-(Fe)] Yang et al. (2026)
ⓘ Main pit	[Columbite-(Fe)] Xue et al. (2026)
Tongliao City (Tongliao Prefecture) Jarud Banner (Zalute Co.) ⓘ Baerzhe complex	[Columbite-(Fe)] Wu et al. (2021) +1 other reference
ⓘ Intrusion No. 801	[Columbite-(Fe)] Zhongxin Yuan and Ge Bai (1997) +2 other references
Jiangsu Suzhou Huqiu District ⓘ Shananbang Ta-Nb deposit	[Columbite-(Fe), Tantalite-(Fe)] Xiaojun Yuan et al. (2004) +1 other reference
Jiangxi Ganzhou Chongyi Co. ⓘ Baoshan Mine	Jili Shen (1988)
ⓘ Maoping W-Sn deposit	Zailin Zeng et al. (2009)
Ji'an Suichuan Co. ⓘ Xigang Ta-Nb deposit	[Columbite-(Fe), Tantalite-(Fe)] Weizheng Hu et al. (2005)
Shangrao Hengfeng Co. Lingshan complex ⓘ Huangshan Nb-Ta deposit	[Columbite-(Fe)] Zhu et al. (2026)
ⓘ Songshugang Nb-Ta-W-Sn deposit (Geyuan Nb-Ta-W-Sn deposit)	[Columbite-(Fe), Tantalite-(Fe)] Zhu et al. (2024)
Yichun Yuanzhou District ⓘ Wugongshan complex	[Columbite-(Fe)] Ma et al. (2026)
Liaoning Liaoyang Gongchangling District Gongchangling Fe deposit ⓘ Gongchangling No. 1 Mine	[Columbite-(Fe)] Liu et al. (2025)
Qinghai Haixi Mongol and Tibetan Autonomous Prefecture Tianjun County ⓘ Chakabeishan rare-element pegmatites	[Tantalite-(Fe)] Sun et al. (2023)
Wulan Co. (Ulan Co.) ⓘ Shaliuquan Nb-Ta deposit	[Columbite-(Fe), Tantalite-(Fe)] Feng et al. (2024)
Sichuan Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture) Yajiang County Kangding pegmatite field ⓘ Jiajika Mine	[Columbite-(Fe), Tantalite-(Fe)] Chenghua Zhang and Guodong Ji (1983)
Liangshan Yi Huili County ⓘ Baicao Nb-Ta deposit	[Columbite-(Fe)] Xue et al. (2021)
ⓘ Xiaoheiqing Nb-Ta deposit	[Columbite-(Fe)] Xue et al. (2021)
Ngawa Autonomous Prefecture (Aba Autonomous Prefecture) Xiaojin Co. ⓘ Luerchongtang Ta deposit	[Tantalite-(Fe)] Dong Peng et al. (2005)
Xinjiang Akesu Prefecture Baicheng Co. ⓘ Boziguoer intrusion	[Columbite-(Fe)] Yin et al. (2015)
Hotan Prefecture Hetian Co. (Khotan Co.; Hotan Co.; Hoten Co.) ⓘ Dahongliutan pegmatite field	[Tantalite-(Fe)] Feng et al. (2019)
Aktas pegmatite ⓘ No. 90 pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Feng et al. (2019)
Ili Kazakh Autonomous Prefecture Altay Prefecture (Aletai Prefecture) Aletai Co. (Altay Co.) ⓘ Dakalasu Mine (Dahalasu Mine)	[Columbite-(Fe), Tantalite-(Fe)] Denghong Wang et al. (2003)
Bu'erjin Co. (Burqin Co.; Burchin Co.) ⓘ Yelaman Mine	[Columbite-(Fe)] Denghong Wang et al. (2001)
Fuyun Co. (Koktokay Co.) Koktokay pegmatite field (Keketuohai pegmatite field) ⓘ Tayategou	Xizhong Miao (1997)
Yunnan Baoshan Longling County ⓘ Huangliangou Be-Nb-Ta pegmatite deposit	[Columbite-(Fe), Tantalite-(Fe)] Gao et al. (2026)
Zhejiang Wenzhou Taishun County ⓘ Yangbin Sn deposit	Yanli Hao et al. (2005)

Colombia
Antioquia Department ⓘ Rio Chico Placer District	[Columbite-(Fe)] Overstreet (1967)

Czech Republic
Central Bohemian Region Kutná Hora District Vlkaneč ⓘ Přibyslavice	[Columbite-(Fe)] Povondra et al. (eds.) +1 other reference
Karlovy Vary Region Cheb District Aš ⓘ Vernéřov	[Columbite-(Fe)] Breiter K.
Karlovy Vary District Ostrov ⓘ Vykmanov	[Columbite-(Fe)] Štemprok et al. (2005)
Potůčky Potůčky Deposit ⓘ Podlesí stock	[Columbite-(Fe)] Breiter et al. (2007)
Sokolov District ⓘ Krásno	[Columbite-(Fe)] René et al. (2011)
Liberec Region Jablonec nad Nisou District Kořenov Jizerka ⓘ Jizerská louka	[Columbite-(Fe)] geological prospecting
Olomouc Region Šumperk District Branná ⓘ Dämmbaude	[Columbite-(Fe), Tantalite-(Fe)] Novák (2003)
Velké Losiny Maršíkov (Marchendorf) ⓘ D6e pegmatite	[Columbite-(Fe)] Ddolníček Z et al. (2020)
ⓘ Lysá hora (Kahlhübel)	[Columbite-(Fe)] Chládek Š. (2016)
ⓘ Rasovna (Schinderhübl)	[Columbite-(Fe), Tantalite-(Fe)] Novák
ⓘ Střelecký důl (Scheibengraben)	[Columbite-(Fe)] Novák
South Bohemian Region České Budějovice District Horní Stropnice ⓘ Šejby	[Columbite-(Fe), Tantalite-(Fe)] Pavlíček V. et al.: Pegmatit ...
Český Krumlov District Nová Ves ⓘ Nová Ves pegmatite	[Columbite-(Fe)] Welser
Jindřichův Hradec District ⓘ Kostelní Vydří (Kirchwiedern)	[Columbite-(Fe)] Novák (1994)
Stráž nad Nežárkou ⓘ Homolka Hill	[Columbite-(Fe)] Breiter et al. (1995)
Vysočina Region Havlíčkův Brod District Pohled ⓘ Granite quarry	[Columbite-(Fe)] Dolníček et al. (2024)
Jihlava District Jihlava ⓘ Pekelský vrch	[Columbite-(Fe)] Pauliš et al. (2022)
Žďár nad Sázavou District Bory ⓘ Dolní Bory	[Columbite-(Fe)] Novák +2 other references
ⓘ Pegmatite vein No. 3	[Columbite-(Fe)] Novák +1 other reference
Horní Bory Cyrilov (Cyrillhof) ⓘ Cyrilov phosphate pegmatite (Cyrillhof)	[Columbite-(Fe)] new data on the type material. Journal of GEOsciences: 45 (1-2) +1 other reference
Rožná ⓘ Rožná pegmatite (Rozna; Roschna)	[Columbite-(Fe)] Novák +3 other references
ⓘ Rožná Borovina	[Columbite-(Fe)] P. Pauliš (2001)
ⓘ Rožná Hradisko	[Columbite-(Fe)] P. Pauliš (2001)
Věžná ⓘ Věžná I pegmatite	[Columbite-(Fe)] Cerny et al. (2000)

DR Congo
Ituri Mambasa Territory ⓘ Mambasa	[Columbite-(Fe), Tantalite-(Fe)] Melcher et al. (2015)
ⓘ Liha river	[Columbite-(Fe)] T. Graupner et al. (2010)
Maniema ⓘ Lubilokwi	[Tantalite-(Fe)]
ⓘ Punia Territory	[Columbite-(Fe)] Kristiansen (2001)
North Kivu Rutshuru Territory Bwito ⓘ Lueshe Mine	[Columbite-(Fe)] Wall et al. (1996)
South Kivu ⓘ Mwenga Territory	[Columbite-(Fe), Tantalite-(Fe)] Melcher et al. (2015)

Egypt
Aswan Governorate ⓘ El-Sibai shear zone	[Columbite-(Fe)] Mohamed (2013)
New Valley Governorate ⓘ Nusab El Balgum	[Columbite-(Fe)] Mahmoud et al. (2018)
Red Sea Governorate Abu Dabbab Massif ⓘ Abu Dabbab Ta-Sn deposit	[Columbite-(Fe)] Fengjun Nie et al. (2013)
ⓘ Gabal El-Ineigi	[Columbite-(Fe)] Sami et al. (2017) +1 other reference
ⓘ Gebel Ras Baroud	[Columbite-(Fe)] Raslan et al. (2010)
ⓘ Homrit Akarem intrusion	[Columbite-(Fe)] Azer et al. (2025)
ⓘ Nikeiba	[Columbite-(Fe)] Abdel Gawad et al. (2025)
ⓘ Um Safi	[Columbite-(Fe)] Mahdy et al. (2025)
ⓘ Um Solimate	[Columbite-(Fe)] Ali et al. (2021)
Wadi Abu Rasheid ⓘ Emerald mines	[Columbite-(Fe)] Raslan et al. (2011)
ⓘ Leucogranite	[Columbite-(Fe)] Elsagheer et al. (2026)
ⓘ Wadi El-Tuleia	[Columbite-(Fe)] Shahin et al. (2025)

Equatorial Guinea
Rio Muni Wele-Nzas Province ⓘ Bibabijop river	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)

Ethiopia
Oromia Region Kenticha pegmatite field ⓘ Kenticha mine	[Columbite-(Fe)] Küster et al. (2009)
Southern Nations Nationalities and Peoples' Region ⓘ Konso	[Columbite-(Fe)] Kaiser (2006)

Europe
Ore Mountains ⓘ Zinnwald-Cínovec mining region	[Columbite-(Fe)] Jahn (2002)

Finland
Central Ostrobothnia ⓘ Kaustinen	[Columbite-(Fe), Tantalite-(Fe)] Huber et al. (2023)
Kainuu Kajaani ⓘ Honkamäki	[Columbite-(Fe)] Marmo et al. (1966)
Kanta-Häme Forssa ⓘ Häiviäntien pegmatite	[Columbite-(Fe)] Ilkka Mikkola collection
ⓘ Kiimassuo pegmatite	[Columbite-(Fe)] Ilkka Mikkola data
Tammela ⓘ Hirvikallio	[Columbite-(Fe)] Pavel M. Kartashov analytical data of ...
ⓘ Kietyönmäki	[Columbite-(Fe), Tantalite-(Fe)] Alviola (1993) +1 other reference
Kymenlaakso Kotka ⓘ Murskelouhos pegmatite	[Columbite-(Fe)] Ilkka Mikkola collection +1 other reference
ⓘ Topaz quarry	[Columbite-(Fe)] Lahti Seppo I. 2011. Kotkan ...
Virolahti ⓘ Lypsyniemi	[Columbite-(Fe)] Jyrki Autio Collection. EDS
Lapland Enontekiö Miessijoki River ⓘ Rapeli-Kangas claim	[Columbite-(Fe), Tantalite-(Fe)] Tuisku (2010)
North Ostrobothnia Kuusamo ⓘ Uuniniemi	[Columbite-(Fe)] Thair Al-Ani! and Olli Sarapää (2013) +2 other references
Pyhäntä ⓘ Lamujärvi area	[Columbite-(Fe)] Al Ani Thair and Torppa Akseli 2011. ...
Pirkanmaa Orivesi Eräjärvi area ⓘ Eräpyhä pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Lahti (2000)
ⓘ Hannula pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Lahti (2000)
ⓘ Juurakko pegmatite	[Columbite-(Fe)] Lahti (2000)
ⓘ Keskimetsä pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Lahti (2000)
ⓘ Niemelä pegmatite	[Columbite-(Fe)] Lahti (2000)
ⓘ Seppälänranta pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Lahti (2000)
ⓘ Viitaniemi pegmatite	[Columbite-(Fe)] Lahti (2000)
Satakunta ⓘ Eurajoki	[Columbite-(Fe)] Haapala Ilmari 1977 Petrography and ...
ⓘ Rapakivi granite occurrence	[Columbite-(Fe)] Al-Ani
South Karelia Luumäki Kännätsalo ⓘ Karelia Beryl Mine pegmatite	[Columbite-(Fe)] Lahti et al. (2009)
South Ostrobothnia Kuortane ⓘ Kaatiala pegmatite	[Columbite-(Fe)] Nieminen (1978) +1 other reference
Seinäjoki Peräseinäjoki ⓘ Haapaluoma pegmatite	[Columbite-(Fe)] Hytönen (1999)
ⓘ Routakallio Quarry (Satamo Quarry)	[Columbite-(Fe)] Ilkka Mikkola collection
Southwest Finland Kimitoön (Kemiönsaari) Kimitoön Island ⓘ Rosendal pegmatite	[Tantalite-(Fe)]
Salo Suomusjärvi ⓘ Salittu	[Columbite-(Fe), Tantalite-(Fe)] Niskanen (2014)
Uusimaa Mäntsälä ⓘ Kapuli	[Columbite-(Fe)] Semiquantitative analysis by Reijo Alviola in 2011 (Jyrki Autio samples)
Myrskylä ⓘ Kankkila pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Ilkka Mikkola collection

France
Auvergne-Rhône-Alpes Allier Vichy Échassières ⓘ Beauvoir quarry	[Columbite-(Fe)] G. Aubert : "Les coupoles granitiques de Montebras et d'Echassières (Massif Central Français) +1 other reference
Saint-Clément ⓘ Malatray	[Columbite-(Fe)] P.G. Pélisson (pelisson@inist.fr)
Centre-Val de Loire Indre Châteauroux Argenton-sur-Creuse ⓘ Creuse river alluvial deposits	Collected by Gaétan Bouclet
Nouvelle-Aquitaine Creuse Guéret Crozant ⓘ Crozant quarry	[Columbite-(Fe)] M. Arliguie collection
Haute-Vienne Bellac Bessines-sur-Gartempe ⓘ Barrot stream alluvial deposits	[Tantalite-(Fe)] François Périnet collection
Razès ⓘ Chanteloube	[Columbite-(Fe)] Bariand et al. (n.d.) +1 other reference
Limoges Ambazac ⓘ Chedeville quarry	[Columbite-(Fe)]
Saint-Léonard-de-Noblat ⓘ Puy-les-Vignes	[Columbite-(Fe)] Harlaux et al. (2015, August)
Pyrénées-Atlantiques Oloron-Sainte-Marie Aramits Ance ⓘ Col d'Etche	[Columbite-(Fe)] MONCHOUX P. et al. (2006)
ⓘ Col d'Urdach	[Columbite-(Fe)] MONCHOUX P. et al. (2006)
Occitanie Hautes-Pyrénées Bagnères-de-Bigorre Avezac-Prat-Lahitte ⓘ Espéchère	[Columbite-(Fe)] MONCHOUX P. et al. (2006)
Pays de la Loire Vendée La Roche-sur-Yon ⓘ Les Épesses	[Columbite-(Fe)] Devismes (1978)

Germany
Baden-Württemberg Freiburg Region Breisgau-Hochschwarzwald Vogtsburg im Kaiserstuhl Schelingen ⓘ Ohrberg - Badberg area	[Columbite-(Fe)]
Waldshut Waldshut-Tiengen Detzeln ⓘ Porphyry quarry	[Columbite-(Fe)] Hanneberg et al. (2009) +1 other reference
Bavaria Lower Bavaria Freyung-Grafenau District Waldkirchen Oberfrauenwald ⓘ Eitzing Quarry	[Columbite-(Fe)] Habel (1998) +1 other reference
Regen District Rinchnach Grub ⓘ Grub Quarries	[Columbite-(Fe)] King (n.d.)
Zwiesel Rabenstein ⓘ Hühnerkobel Mine (Hennenkobel Mine)	[Columbite-(Fe)] Habel (2006)
Upper Palatinate Neustadt an der Waldnaab District Pleystein ⓘ Kreuzberg (Rose quartz cliff)	[Columbite-(Fe)] Dill et al. (2009)
ⓘ Miesbrunn pegmatite–aplite swarm	[Columbite-(Fe)] Dill et al. (2012)
ⓘ Trutzhofmühle aplite	[Columbite-(Fe)] Dill et al. (2008) +1 other reference
Waidhaus ⓘ Hagendorf	[Columbite-(Fe)] Dill (2009) +1 other reference
ⓘ Hagendorf North Pegmatite	[Columbite-(Fe)] Dill et al. (2013)
ⓘ Hagendorf South Pegmatite	[Columbite-(Fe)] Keck (1989)
Reinhardsrieth ⓘ Reinhardsrieth aplite	[Columbite-(Fe)] Dill et al. (2015)
ⓘ Silbergrube	[Columbite-(Fe)] Dill et al. (2008)
Tirschenreuth District Tirschenreuth ⓘ Sägmühle (Rotes Kreuz)	[Columbite-(Fe)] Müller (1852)
Hesse Darmstadt Bergstraße Abtsteinach Mackenheim ⓘ Amphibolite quarry	[Columbite-(Fe)] SEM-EDS by Joy Desor and Gerhard Möhn
Rhineland-Palatinate Germersheim Jockgrim Rheinzabern ⓘ Holcim gravel pit	[Tantalite-(Fe)] Oberthür et al. (2016)
Mayen-Koblenz Vordereifel Ettringen ⓘ Caspar quarry	[Columbite-(Fe)] Blaß et al. (2004)
Saxony Bautzen District Hochkirch Wuischke ⓘ Steinberg	[Columbite-(Fe), Tantalite-(Fe)] Witzke et al. (2008)
Erzgebirgskreis Ehrenfriedersdorf ⓘ Sauberg Mine	[Columbite-(Fe)] M. Trinkler et al. (1997)
Geyer ⓘ Geyersberg Granite Stock	[Columbite-(Fe)] René (2019)
Görlitz District Königshain ⓘ Rubel Quarry	[Columbite-(Fe)]
Thiemendorf ⓘ A4 Highway tunnel	[Columbite-(Fe)] Aufschluss 49 (1998)
ⓘ Schoorstein Quarry	[Columbite-(Fe)] Witzke et al. (2001)
Vierkirchen Döbschütz Arnsdorf-Melaune Quarry ⓘ Neuland Quarry	[Columbite-(Fe)] Witzke et al. (2001)
Mittelsachsen Claußnitz Diethensdorf ⓘ Diethensdorf Quarry	[Columbite-(Fe)] AmMin 88:986-995

Greenland
Sermersooq Arsuk Fjord Ivigtut stock ⓘ Ivigtut Mine	[Columbite-(Fe)] Blomstrand (1866)

Hungary
Borsod-Abaúj-Zemplén County Miskolc District Bükkszentkereszt ⓘ Bagoly Hill	[Columbite-(Fe), Tantalite-(Fe)] collector: Péter Gál
Miskolc ⓘ Lillafüred	[Columbite-(Fe)] Balassa et al. (2026)

India
Chhattisgarh Dantewada District ⓘ Kawadgaon-Challanpara pegmatite field	[Columbite-(Fe)] Singh et al. (2017)
Karnataka Mandya District ⓘ Marlagalla-Allapatna	[Columbite-(Fe), Tantalite-(Fe)] Sarbajna et al. (2000)
Rajasthan Udaipur Division Udaipur District ⓘ Newania carbonatite-fenite complex	[Columbite-(Fe)] Singh et al. (2023)

Iraq
Sulaymaniyah Governorate Mawat ophiolite complex ⓘ Kuradawe granitic pegmatite	[Columbite-(Fe), Columbite-(Fe) var: Scandium-bearing Columbite-(Fe)] Mohammad et al. (2016) +1 other reference

Italy
Lombardy Lecco Province Colico ⓘ Piona Peninsula	[Tantalite-(Fe)] VIGNOLA et al. (2007)
ⓘ Malpensata pegmatitic dyke (Olgiasca-Malpensata; Croce Quarry; Secondi dyke)	[Columbite-(Fe), Tantalite-(Fe)] Banti et al. (2011)
Sondrio Province Chiavenna ⓘ Tanno Pegmatitic Field	[Columbite-(Fe)] Bedogné et al. (1995) +1 other reference
Chiesa in Valmalenco ⓘ Sissone Valley	[Columbite-(Fe)] Marchesini et al. (2025) +1 other reference
Novate Mezzola ⓘ Codera Valley	[Columbite-(Fe)] - (n.d.) +1 other reference
ⓘ Alpiga Valley	[Columbite-(Fe)] Ghizzoni et al. (2005)
ⓘ Canina Valley	[Columbite-(Fe)] Ghizzoni et al. (2005)
ⓘ Grosina Valley	[Columbite-(Fe)] Ghizzoni et al. (2005)
ⓘ Orco Valley	[Columbite-(Fe)] Ghizzoni et al. (2005)
ⓘ Punta Trubinasca	[Columbite-(Fe)] Ghizzoni et al. (2005)
ⓘ Val Masino	[Columbite-(Fe)] Bedogné et al. (1995)
Villa di Chiavenna ⓘ Alpe Rossaccio (Rossaccio)	[Columbite-(Fe)] Bedogné et al. (1995)
Piedmont Verbano-Cusio-Ossola Province Craveggia Rio Vasca ⓘ Piano del Lavonchio (Piano dei Lavonchi)	[Tantalite-(Fe)] Piccoli et al. (2007)
Druogno Orcesco ⓘ Alpe Rosso	[Tantalite-(Fe)] Piccoli et al. (2007)
Trontano Cosasca ⓘ Grignaschi Quarry	[Tantalite-(Fe)] Piccoli et al. (2007)
ⓘ Rio Graia	[Tantalite-(Fe)] Mauro Savia collection
Sardinia Metropolitan City of Cagliari Sarroch ⓘ Punta de Su Seinargiu (Su Seinargiu; Su Senargiu)	[Columbite-(Fe)] Fernando Caboni et al. (2023)
Trentino-Alto Adige/Südtirol Trento Province Predazzo ⓘ Al Fol quarry (Sacac quarry)	[Columbite-(Fe)] Vecchi et al. (2013)
Tuscany Livorno Province Campo nell'Elba San Piero in Campo ⓘ Fonte del Prete	[Columbite-(Fe)] Aurisicchio et al. (2002)

Ivory Coast
Sassandra-Marahoué Haut-Sassandra Issia department Issia ⓘ Bémadi Mine	[Tantalite-(Fe)] Allou et al. (2005)
ⓘ Étienne-Méguhé Mine	[Tantalite-(Fe)] Allou (2006)
ⓘ Sézo	[Tantalite-(Fe)] Assaoulé Benjamin Allou (2005) +1 other reference

Japan
Fukuoka Prefecture Fukuoka City ⓘ Nagatare (Nagatareyama; Nagatare mine)	[Tantalite-(Fe)] ...
Fukushima Prefecture Ishikawa District Ishikawa town (Ishikawa-machi) ⓘ Kuroe mine	[Columbite-(Fe)] Akira Kato (2011)
ⓘ Shiozawa	[Columbite-(Fe)] Petrov (n.d.)
Wagu ⓘ Kannonyama pegmatite (Kannonyama mine)	[Columbite-(Fe)] - (2002)
Koriyama City ⓘ Atagoyama	[Columbite-(Fe)] Matsubara et al. (2013)
Sukagawa City Mt Uzumine (Utsumine) ⓘ Uzumine mine (Udumine mine; Uzumine pegmatite)	[Columbite-(Fe)] Nakajima et al. (2006)
ⓘ Mujinamori	[Columbite-(Fe)] Matsubara et al. (2006)
Gifu Prefecture Nakatsugawa City Hirukawa ⓘ Tawara (Tahara)	[Columbite-(Fe)] Yamada (2004)
Ibaraki Prefecture Hitachiota City ⓘ Myoukenyama	[Tantalite-(Fe)] Matsubara et al. (2006)
ⓘ Yudaira	[Columbite-(Fe)] Yamada (2004)
Kasumigaura City Chiyoda-machi ⓘ Yukiiri	[Columbite-(Fe)] Yamada (2004)
Kochi Prefecture Tosashimizu City ⓘ Cape Ashizuri (Ashizurimisaki)	[Columbite-(Fe)] Nakashima et al. (1998)
Nagano Prefecture Kiso District Nagiso ⓘ Tadachi	[Columbite-(Fe)] Yamada (2004)
Saga Prefecture Saga City ⓘ Sugiyama	[Columbite-(Fe)] Uehara et al. (2014)

Kazakhstan
Abai Region Tarbagatai Range Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts) ⓘ Verkhnee Espe Massif (Verkhnee Espe deposit)	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
East Kazakhstan Region Samar District ⓘ Belogorskoe Ta-Be deposit	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
Ulan District ⓘ Ognevka Ta deposit	[Columbite-(Fe), Tantalite-(Fe)]

Madagascar	[Tantalite-(Fe)]

Analamanga Anjozorobe District Beronono Commune ⓘ Befanamo pegmatite	[Columbite-(Fe)] King (n.d.)
Ankazobe District Tsaramasoandro ⓘ Marijao pegmatite	[Columbite-(Fe)] Arliguie Michel photo & collection
ⓘ Sahatany Pegmatite Field (Mt Ibity area)	[Columbite-(Fe)] Ranorosoa (1986)
Vakinankaratra Antsirabe II District Ibity Sahatany Valley ⓘ Estatoby (Antanetinilapa)	[Columbite-(Fe)] Knut Edvard Larsen collection et al. (XRD)
ⓘ Ilapa	[Columbite-(Fe)] Ranorosoa (1986)
Mangarano ⓘ Antsofimbato pegmatites	[Columbite-(Fe)] Ranorosoa (1986)
Sahanivotry Manandona ⓘ Ialamitana Pegmatites	[Columbite-(Fe)] Pavel M. Kartashov analytical data 2021
Betafo District Ambohimasina ⓘ Lohavalala pegmatite	[Columbite-(Fe)] Harvard University
Tritriva ⓘ Samiresy	[Columbite-(Fe)] Ranorosoa (1986)
Mandoto Betsohana ⓘ Ambatofotsikely pegmatite	[Columbite-(Fe)] Falster (2003) +1 other reference

Mexico
Chihuahua Aquiles Serdán Municipality Santa Eulalia Mining District East Camp ⓘ San Antonio Mine	[Columbite-(Fe)] Panczner (1987)
Oaxaca la San Francisco Telixtlahuaca Municipality San Francisco Telixtlahuaca ⓘ Santa Ana Mine	[Columbite-(Fe)] Panczner (1987)

Mongolia
Dornogovi Province ⓘ Unchzhul massif	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
Khovd Province Myangad District ⓘ Khaldzan Buragtag massif	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
ⓘ Khalzan Buregte Zr–Nb–REE deposit (Khalzan Buregtei deposit)	[Columbite-(Fe)] Park et al. (2021)
ⓘ Tsakhirin Khuduk Y-Zr-Nb deposit	[Columbite-(Fe)] Pavel M. Kartashov (n.d.) +1 other reference
Uvs Province Zavkhan District ⓘ Shar Tolgoi	[Columbite-(Fe)] Pavel M. Kartashov (n.d.) +1 other reference

Morocco
Marrakesh-Safi Region Rehamna Province Sidi Bou Othmane Cercle Jebilet Mountain (Djebilet Mountain) Sidi Bou Othmane ⓘ El Rhaba pegmatite	[Columbite-(Fe)] Favreau (2012)
ⓘ Mrirat pegmatite	[Columbite-(Fe)] Favreau (2012)

Mozambique
Zambezia Province ⓘ Alto Ligonha Pegmatite Field	[Columbite-(Fe), Tantalite-(Fe)] Wilson et al. (2000)
Gilé district ⓘ Napakhala	[Tantalite-(Fe)] Simon Philippo Collection
Mocuba District Mocuba ⓘ Melatube pegmatite	[Columbite-(Fe)] Moiana (2010)
Mulevala District ⓘ Morrua Mine	[Columbite-(Fe)] Wilson et al. (2000)

Myanmar
Shan State Taunggyi District Nyaungshwe Township ⓘ Myinmati W-Sn-polymetallic deposit	[Columbite-(Fe), Tantalite-(Fe)] Hong Wang et al. (2013)

Namibia
Erongo Region Dâures Constituency ⓘ Sandamap North Farm 115	[Columbite-(Fe)] von Bezing (2007)
ⓘ Sandamap pegmatite	[Columbite-(Fe), Tantalite-(Fe)] in the collection of F.J.Emmerich
Karibib Constituency Abbabis Farm 70 ⓘ No. 1 pegmatite	[Columbite-(Fe)] Förch (1998)
Davib Ost Farm 61 ⓘ Carsie pegmatite	[Tantalite-(Fe)] Cairncross et al. (2006)
ⓘ Davib Mine	[Tantalite-(Fe)] Cairncross et al. (2006)
Erongorus Farm 166 ⓘ Pieters Hill	[Tantalite-(Fe)] Cairncross et al. (2006)
ⓘ Neuschwaben Farm 73 (Neu Schwaben)	[Columbite-(Fe)] von Bezing (2007)
Okongava Ost Farm 72 ⓘ Rubikon Mine	[Columbite-(Fe)] Bezing et al. (2007) +1 other reference
Schlucht Farm 162 ⓘ Van der Made pegmatite	[Tantalite-(Fe)] Cairncross et al. (2006)
Tsaobismund Farm 85 ⓘ Brockmann's pegmatite	[Columbite-(Fe)] Keller (1991) +1 other reference
Kunene Region Khorixas ⓘ Lofdal-Bergville REE deposit	[Columbite-(Fe)] Bodeving (2015)

Niger
Agadez Tchirozerine ⓘ Tarraouadji Massif	[Columbite-(Fe)] J. Fabriès and G. Rocci (1965)

Nigeria
ⓘ Bauchi	[Columbite-(Fe)] Melcher et al. (2015)
Ningi Kalato ⓘ Tibchi complex	[Columbite-(Fe)] Sakoma et al. (2002)
Kogi Adavi ⓘ Okene-Lokoja-Kabba roads junction pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Rotimi et al. (2012)
Plateau Jos Plateau Younger ring complex ⓘ Jos-Bukuru	[Columbite-(Fe)] Woolley (2001)

North Korea
Kangwon Province Pyonggang County ⓘ Abdong Zr-Nb deposit (Aptong; Apdong)	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)

Norway
Agder ⓘ Arendal	[Columbite-(Fe)] Balassone et al. (2015)
ⓘ Eptevatnet	[Columbite-(Fe)] Selbekk et al. (2008)
Evje og Hornnes Ås ⓘ Ås 2 Feldspar Quarry	[Columbite-(Fe)]
ⓘ Landsverk	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Landsverk 1 Feldspar Quarry (Jokeli)	[Columbite-(Fe)] Larsen (2001) +1 other reference
Lauvland ⓘ Brattekleiv Feldspar Quarry (Lauvland 04)	[Columbite-(Fe), Tantalite-(Fe)] Harries (2020)
ⓘ Lauvland 05a Feldspar Quarry	[Tantalite-(Fe)] Neumann (1985) +1 other reference
Flekkefjord ⓘ Hidra	[Columbite-(Fe)] Müller et al. (2017)
Iveland ⓘ Eptevatnet 04 Feldspar Quarry (Hovåsen)	[Columbite-(Fe)] Collection of the Iveland Municipality ...
ⓘ Fossbekk Feldspar Quarry	[Columbite-(Fe)] Lund (2016)
Frikstad ⓘ Frikstad 07 Feldspar Quarry	[Columbite-(Fe)] Revheim (2004)
ⓘ Håverstad	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Landås	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Landås 01 Feldspar Quarry	[Tantalite-(Fe)] Bjørlykke (1935) +1 other reference
ⓘ Ljosland	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Ljosland 03 Feldspar Quarry	[Columbite-(Fe)] Lund (2016)
ⓘ Rossås	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Solås Pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Müller et al. (2012)
Tveit ⓘ Steli Feldspar Quarry (Tveit 03)	[Columbite-(Fe)] Selbekk et al. (2008) +1 other reference
Risør Søndeled ⓘ Ramskjær Feldspar Quarry	[Columbite-(Fe)] Selbekk et al. (2008) +1 other reference
Akershus Hurdal ⓘ Fagerliåsen	[Columbite-(Fe)] Folvik (2007)
Lunner ⓘ Gjerdingselva	[Columbite-(Fe)] Kvamsdal (2020)
Buskerud Øvre Eiker Gunhildrud ⓘ Bakstevalåsen	[Columbite-(Fe)] Jahren et al. (1998)
Nordland Hamarøy Drag ⓘ Erlinggruva	[Columbite-(Fe)] Husdal (2008)
Finnøya ⓘ Håkonhals Quarry	[Columbite-(Fe)] Zhou et al. (2022)
Tiltvika ⓘ Tiltvika pegmatite	[Columbite-(Fe)] Tomašić et al. (2004)
Narvik ⓘ Hundholmen	[Columbite-(Fe)] Husdal (2008)
ⓘ Stetind pegmatite	[Columbite-(Fe)] Husdal (2008)
Sørfold ⓘ ~~Tennvatn pegmatite~~	[Columbite-(Fe)] Ellingsen et al. (1995) +1 other reference
Østfold Halden Idd Aspedammen ⓘ Herrebøkasa	[Columbite-(Fe)] Selbekk et al. (2008)
Moss ⓘ Dillingøya (Dillingö)	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Hattvik Feldspar Quarry	[Tantalite-(Fe)] Selbekk et al. (2008)
Rygge Dramstad ⓘ Feøya	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Kure Mine	[Columbite-(Fe)] Selbekk et al. (2008)
Vannem ⓘ Moss Quarry (Skolt Quarry)	[Columbite-(Fe)]
ⓘ Råde	[Columbite-(Fe)] Balassone et al. (2015)
ⓘ Berg	[Columbite-(Fe)] Brøgger (1897) +1 other reference
ⓘ Fuglevik	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Karlshus Mine	Müller et al. (2017)
ⓘ Skråtorp	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Spro	[Columbite-(Fe)] Selbekk et al. (2008)
Sarpsborg Ryen ⓘ Ryen Quarry	[Columbite-(Fe)] Kristiansen (2022)
Våler ⓘ Ånnerud (Ånnerød)	[Columbite-(Fe)] Selbekk et al. (2008)
ⓘ Aslaktaket Quarry	[Columbite-(Fe)] Ray Schortmann
ⓘ Vintergruben Quarry	[Columbite-(Fe)] Müller et al. (2017)
Rogaland Vindafjord Vats ⓘ Krakkanuten pegmatite	[Columbite-(Fe)] Størseth (2003)
ⓘ Thor's Mine	[Columbite-(Fe)] Selbekk et al. (2008) +1 other reference
Svalbard Spitsbergen Hornsund ⓘ Skoddefjellet Pegmatite	[Columbite-(Fe)] Pršek et al. (2010)
Telemark Drangedal Tørdal ⓘ Heftetjern pegmatite	[Tantalite-(Fe)] Raade et al. (2000)
Kragerø ⓘ Tangen Feldspar Mine	[Columbite-(Fe)] Selbekk et al. (2008) +1 other reference
Vestfold Larvik Commune Tjølling Håkestad ⓘ Håkestad Quarry	[Columbite-(Fe)] Engvoldsen et al. (1991) +1 other reference

Pakistan
Gilgit-Baltistan Roundu District ⓘ Shengus	[Columbite-(Fe)]
Shigar District ⓘ Shigar Valley	[Columbite-(Fe)] AM Mizunaka
ⓘ Skardu Area	[Columbite-(Fe)] imported from Shigar District +2 other references

Poland
Lower Silesian Voivodeship Dzierżoniów County Gmina Dzierżoniów Owiesno Kietlice ⓘ Owiesno-Kietlice area pegmatite occurrences	[Columbite-(Fe)] Łodziński M. 2008: Chemical ... +1 other reference
Piława Górna ⓘ DSS Piława Górna Quarry	[Columbite-(Fe), Tantalite-(Fe)] PIECZKA et al. 2010: Nb-Ta minerals in ...
ⓘ Julianna pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Pieczka et al. (2012) +1 other reference
Karkonosze County Szklarska Poręba ⓘ Szklarska Poręba Huta granite quarry	[Columbite-(Fe)] Evans et al. (2018) +1 other reference
ⓘ Strzelin County	[Columbite-(Fe)] Łodziński M. 2008: Chemical ...
Gmina Przeworno ⓘ Romanów	[Columbite-(Fe)] Lis et al. (1986)
Świdnica County Gmina Świdnica ⓘ Michałkowa pegmatites	[Columbite-(Fe)] Eligiusz Szełęg collection
ⓘ Góry Sowie Block	[Columbite-(Fe)] Pieczka et al. (2017)

Portugal
Beja Beja Santa Vitória e Mombeja ⓘ Ferrarias e Castelo Mine	[Columbite-(Fe)] Oliveira et al. (2025)
Braga Terras de Bouro Covide ⓘ Covide quarry	[Columbite-(Fe)] Mineralizações e Recursos de Tântalo no Norte de Portugal - Análise Paragenética" - Carlos Augusto Alves Leal Gomes (2016)
Vieira do Minho Anjos e Vilar do Chão Muro Alto Mine ⓘ Western pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Dias et al. (2009)
Castelo Branco Idanha-a-Nova União das Freguesias de Zebreira e Segura ⓘ Segura Mines (Segura mining field)	[Columbite-(Fe)] Antunes et al. (2013)
Guarda Guarda Gonçalo ⓘ Alvarrões Mine	[Columbite-(Fe)] Fabre (n.d.)
Viana do Castelo Ponte da Barca Vila Chã (São João Baptista e Santiago) ⓘ Mata da Galinheira Mine	[Columbite-(Fe)] PROSPEG – Projecto de prospecção +1 other reference
Valença do Minho Gondomil e Safins ⓘ Eiras quarry	[Columbite-(Fe)] Nuno Afonso collection (XRD-analysed)
Viana do Castelo Montaria ⓘ Serra de Arga	[Columbite-(Fe)] Dias P et al. (2014)
Vila Real Alijó São Mamede de Ribatua ⓘ Alijó spodumene pegmatite	[Columbite-(Fe)] Garate-Olave et al. (2024)
ⓘ Barroso-Alvão pegmatite field	[Columbite-(Fe)] Martins et al. (2011)

Romania
Harghita County Ditrău Complex ⓘ Jolotca (Orotva)	[Columbite-(Fe)] Szakáll et al. (2010)
Joseni ⓘ Belcina Creek (Belcina)	[Columbite-(Fe)] Hirtopanu et al. (2013)

Russia
Buryatia Bichursky District Mukhorshibir' settlement Zaganskii range Baits Kundui deposit ⓘ Glavnaya vein	[Columbite-(Fe)] Iovchev E.S.
Kizhinginsky District Ermakovskoe Be Deposit Zunshibir' valley ⓘ Opornyi pegmatite	[Columbite-(Fe)] Mironov A.G. and Gofman A.F (1979)
Chelyabinsk Oblast Argayashsky District ⓘ Pit No. 400	[Columbite-(Fe)] Pekov (1998) +1 other reference
Ilmen Mountains ⓘ Pit No. 298	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
ⓘ Pit No. 50 (Blyumovskaya Pit; Blum Pit)	[Columbite-(Fe)] Pavel M. Kartashov (n.d.) +2 other references
ⓘ Ilmen Nature Reserve	[Columbite-(Fe)] Sorokina et al. (2016)
Plastovsky District ⓘ Malyginsky Quarry	[Columbite-(Fe)] webmineral.ru (2021)
Svetlyi ⓘ Svetlinsky pegmatite quarry	[Columbite-(Fe), Tantalite-(Fe)] Pavel M. Kartashov analytical data 2009
Vishnevye Mountains Kobelikha Mt. ⓘ Unnamed quarry	[Columbite-(Fe)] Nishanbaev et al. (2016)
Komi Republic Timan Range Verkhne-Shugorskoe bauxite deposit ⓘ Borehole #10855	[Columbite-(Fe)] Udoratina et al. (2024)
Krasnoyarsk Krai Boguchansky District Chadobets alkaline complex ⓘ Chuktukon carbonatite massif	[Columbite-(Fe)] Sharygin et al. (2017, August)
Murmansk Oblast ⓘ Eveslogchorr Mt	[Columbite-(Fe)] Ivanyuk et al. (2007)
Kola Peninsula ⓘ Kolmozero-Voronye belt	[Columbite-(Fe), Tantalite-(Fe)] Huber et al. (2023)
Kolsky District ⓘ Shongui deposit	[Columbite-(Fe)] Zozulya et al. (2024)
ⓘ ~~Lovozero Massif~~	[Columbite-(Fe)] ...
Voron'i Tundry ⓘ Kolmozerskoe deposit	[Columbite-(Fe), Tantalite-(Fe)] Zozulya et al. (2024)
ⓘ Polmos deposit	[Columbite-(Fe)] Zozulya et al. (2024)
Primorsky Krai Krasnoarmeysky District Roshchino Kedrovaya river ⓘ Nezametnoe deposit (Nezametny gold mine)	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
Republic of Karelia Loukhsky District ⓘ Elet'ozerskii massif	[Columbite-(Fe)] Sorokhtina et al. (2018)
Pitkyarantsky District Pitkyaranta mining district ⓘ Linnavaara	[Columbite-(Fe)] I.V.Pekov. E.A.Vlasov. E.A.Gerasimova Pitkyarantskaya mineralogical practice et al. (in Russian)
Sakha Polar Yakutia ⓘ Tomtor Massif	[Columbite-(Fe)] S.M. Kravchenko data +1 other reference
Verkhoyansk District Yana River Basin Yana-Adycha Region Arga-Ynnakh-Khaya granite Massif ⓘ Kester harpolith	[Columbite-(Fe)] Alekseev et al. (2020)
ⓘ Kester deposit	[Columbite-(Fe)] Alekseev et al. (2020) +1 other reference
Sverdlovsk Oblast Adui Batholith ⓘ Semininskaya mine	[Columbite-(Fe)] Vital'Evna (2021)
Prigorodny District Yuzhakovo Alabashka pegmatite field ⓘ Kazennitsa vein (Kazionnitsa)	[Tantalite-(Fe)] webcenter.ru (2002)
Rezhevsky District Lipovsk pegmatite field ⓘ Lipovka Mine (Lipovskoe Mine; Lipovskaya Mine; Lipovaya Mine)	[Columbite-(Fe), Tantalite-(Fe)] Zap. Vseross. Mineral. Obshch. (2) +2 other references
ⓘ Lipovskoye pegmatite field	[Columbite-(Fe)] Zakharov et al. (2022)
Tuva ⓘ Belaya Zima REE-Nb deposit	[Columbite-(Fe)] Doroshkevich et al. (2016)
Kaa-Khemsky District Erzin massif ⓘ Ulug-Tanzek deposit	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
Zabaykalsky Krai Duldurginsky District ⓘ Sakhanaiskiy granite massif	[Columbite-(Fe)] Chukanov et al. (2026)
Kalarsky District ⓘ Katugin Ta-Nb deposit	[Columbite-(Fe)] Victor V. Sharygin analytycal data (2012) +3 other references
Khiloksky District Orlovskoye ⓘ Orlovskoye mine	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
Ononsky District Durulgui granite-pegmatite system ⓘ Chalotskoe deposit	[Columbite-(Fe)] Lykova I. S. et al. (2017)

Rwanda
Western Province Ngororero District ⓘ Gatumba pegmatite field	[Tantalite-(Fe)] Pohl et al. (2013)
Muhororo ⓘ Buranga pegmatite	[Tantalite-(Fe)] Bertossa (1968) +1 other reference
ⓘ Rongi Amblygonite Pegmatite	[Columbite-(Fe)] Melcher et al. (2015)
Rutsiro District ⓘ Lutsiro	[Columbite-(Fe)] Daltry et al. (1998)

Saudi Arabia
Tabuk Region Midyan ⓘ Jabal Tawlah	[Columbite-(Fe)] Atencio et al. (2015)

Slovakia
Banská Bystrica Region Banská Bystrica District Brusno ⓘ Sopotnická Valley	[Columbite-(Fe)] Uher
Bratislava Region Bratislava ⓘ Bratislava I	[Tantalite-(Fe)] Koděra et al. (1986)
Staré Mesto Mlynská valley ⓘ Pri Habánskom mlyne street	[Columbite-(Fe)] Uher et al. (1994)
Bratislava IV Devín ⓘ Jezuitské Lesy	[Columbite-(Fe), Tantalite-(Fe)] Chudík et al. (2011)
Pezinok District Limbach ⓘ Limbach Brook	[Columbite-(Fe), Tantalite-(Fe)] Uher et al. (2006) +1 other reference
Pezinok Slnečné Valley ⓘ Alluvial placers	[Columbite-(Fe), Tantalite-(Fe)] Uher et al. (n.d.)
Košice Region Rožňava District ⓘ Gemerská Poloma	[Columbite-(Fe), Tantalite-(Fe)] Koděra et al. (1986)
Dlhá Valley ⓘ Greisen outcrop	[Columbite-(Fe)] Martin Števko-unpublished
Spišská Nová Ves District Hnilec ⓘ Medvedí potok Sn deposit	[Columbite-(Fe)] Koděra et al. (1986)
Trenčín Region Prievidza District Jalovec ⓘ Ráztočno pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Uher (2008)
Liešťany ⓘ Granitic pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Uher P. et al. (2020)
Trnava Region Piešťany District ⓘ Moravany nad Váhom	[Columbite-(Fe), Tantalite-(Fe)] Uher et al. (Považský Inovec)
ⓘ Striebornica	[Columbite-(Fe), Tantalite-(Fe)] Uher P.
Žilina Region Liptovský Mikuláš District Dúbrava ⓘ Dúbrava Sb deposit	[Columbite-(Fe)] Uher P.

South Africa
Limpopo Waterberg District Municipality Modimolle-Mookgophong Local Municipality Mookgophong ⓘ Buffalo Fluorspar Mine	[Columbite-(Fe)] Atanasova et al. (2016)

South Korea
North Chungcheong Province Chungju City Joongwon-gun Mt. Eorae ⓘ Chungju deposit	[Columbite-(Fe), Tantalite-(Fe)] Pavel M. Kartashov (n.d.)

Spain
Canary Islands Santa Cruz de Tenerife Province Tenerife Candelaria Barranco Hondo ⓘ ~~Lava flow~~	[Columbite-(Fe)] Dill et al. (2023)
Castile and Leon Salamanca Garcirrey ⓘ Julita quarry (Cañada pegmatite)	[Columbite-(Fe)] Encarnación Roda-Robles (2007) +1 other reference
Golpejas Golpejas Mining group ⓘ Tita Mine	[Tantalite-(Fe)] Calvo Rebollar (2009)
ⓘ La Fregeneda	[Columbite-(Fe)] Encarnación Roda-Robles (2007)
Peñaparda ⓘ La Canalita Sn-rich pegmatitic dykes	[Tantalite-(Fe)] Losantos et al. (2025)
Galicia A Coruña Lousame Vilacova ⓘ San Finx Mines	[Columbite-(Fe)] Garófano-Medina et al. (2021)
Ourense Viana do Bolo ⓘ Penouta mines	[Columbite-(Fe), Tantalite-(Fe)] Guldris Leon +2 other references
Pontevedra Forcarei Forcarei South pegmatite field ⓘ Presqueira pegmatite	[Columbite-(Fe), Tantalite-(Fe)] Roza Llera +3 other references
Gondomar Vincios Galiñeiro Complex ⓘ Santa Marina Mine	[Columbite-(Fe)] NÚÑEZ-GARCÍA et al. (2012)
Lalín ⓘ Lalín pegmatite field	[Tantalite-(Fe)] Calvo Rebollar (2009)

Sri Lanka
Sabaragamuwa Province Ratnapura District ⓘ Ratnapura	[Columbite-(Fe)] Geeth Sameera et al. (2025)

Sweden
Norrbotten County Luleå ⓘ Råneå	[Columbite-(Fe)] E. Welin +1 other reference
ⓘ Sörhällan quarry	[Columbite-(Fe)] Pavel M. Kartashov (n.d.) +1 other reference
Östergötland County Norrköping Kolmården ⓘ Lilla Älgsjö Quarry	[Columbite-(Fe)] Swedish Museum of Natural History (NRM)
ⓘ Stubbetorps Sarvgöl	[Columbite-(Fe)] Sundius (1951)
Västernorrland County Kramfors ⓘ Sels-Vitberget	[Columbite-(Fe)] Jonsson et al. (1997) +1 other reference
Västmanland County Köping ⓘ Kolsva	[Columbite-(Fe)] Öhman (2003)

Switzerland
Grisons Maloja Region Bregaglia Upper Val Bregaglia Bondasca Valley ⓘ Pizzo Trubinasca	[Columbite-(Fe)] Stalder et al. (1998)
Löbbia ⓘ Vallun dal Largh	[Columbite-(Fe)] Stalder et al. (1998)
ⓘ Val Forno	[Columbite-(Fe)] Stalder et al. (1998)
ⓘ Cavloc lake	[Columbite-(Fe)] Stalder et al. (1998)
Muretto Valley ⓘ Muretto Pass	[Columbite-(Fe)] Stalder et al. (1998)
Moesa Region Grono Leggia ⓘ Leggia Valley	[Columbite-(Fe)] Guastoni et al. (2014)
San Vittore Monticello ⓘ Maiò Valley	[Columbite-(Fe)]
Ticino Locarno Brissago ⓘ Ponte Valley	[Columbite-(Fe)] Weiß (1989) +1 other reference
Centovalli ⓘ Gridone - Monte Limidario area	[Columbite-(Fe)] Weiβ et al. (2007)

Thailand
Prachuap Khiri Khan Province ⓘ Nong Sua	[Columbite-(Fe)] Linnen et al. (1993)

UK
England Cornwall Mabe ⓘ Chywoon Quarry	[Columbite-(Fe)] Moulding et al. (2005)
Treverbyn Stenalees ⓘ Gunheath China Clay Pit	[Columbite-(Fe)] Tindle (2008)

Ukraine
Kirovohrad Oblast Holovanivsk Raion ⓘ Stankuvatske Li-deposit	[Columbite-(Fe), Tantalite-(Fe)] Kurylo et al. (2022) +1 other reference
Zaporizhia Oblast Pryazovske Raion Eliseevka Eliseevskoe pegmatite field ⓘ Zelenaya Mogila pegmatite	[Columbite-(Fe)] Lazarenko E.K. e.a. Mineralogy of ...
Zhytomyr Oblast Korosten Raion ⓘ Perzhanskoe ore field (Perga Be deposit)	[Columbite-(Fe)] Pavel M. Kartashov (n.d.)
Zhytomyr Raion ⓘ Khoroshiv Raion (Volodarsk-Volynskii)	[Columbite-(Fe)] Bailey (1980) +1 other reference

USA
Alaska Dillingham Census Area Bristol Bay Mining District ⓘ Sleitat Prospect	[Tantalite-(Fe)] - (2008)
Arizona Maricopa County Paradise Valley ⓘ Mummy Mountain	[Columbite-(Fe)] Anthony et al. (1995)
Pima County Ajo Mining District Chico Shunie Hills Chico Shunie San Antonio group of claims ⓘ Valentine 1 claim	[Columbite-(Fe)] Anthony et al. (1995)
ⓘ Valentine 2 claim	[Columbite-(Fe)] Anthony et al. (1995)
ⓘ Valentine 3 claim	[Columbite-(Fe)] Anthony et al. (1995)
Yavapai County White Picacho Mining District Independence Gulch ⓘ Midnight Owl Mine	[Columbite-(Fe)] Anthony et al. (1995)
California Riverside County Cahuilla Mining District Cahuilla Mountain ⓘ Williamson Mine (Coahuila Brave claim; Williamson Silica Mine)	[Columbite-(Fe)] Phil Osborn collection
San Diego County Aguanga Mountain Mining District (Smith Mountain Mining District) Oak Grove Aguanga Mountain ⓘ Mountain Lily Mine (Emeralite No. 2 claim; Gem Mine No. 1 claim; Ware mine)	[Columbite-(Fe)] King (n.d.)
Pala Mining District Pala Hiriart Mountain Vanderberg-Katerina pegmatites ⓘ Katerina Mine	[Columbite-(Fe)] Jahns et al. (1951)
ⓘ Vanderberg Mine	[Columbite-(Fe)] Jahns et al. (1951)
Ramona Mining District Ramona ⓘ Hercules Mine (Beryl claim; Hercules claim; Hercules group; Hercules prospect)	[Columbite-(Fe)] Foord et al. (1989)
Little Three Mine area ⓘ Little Three Mine	[Columbite-(Fe)] Foord et al. (1989)
Warner Springs Mining District Warner Springs ⓘ Cryo-Genie Mine	[Columbite-(Fe)] Rocks & Minerals +1 other reference
Colorado Chaffee County Turret Mining District ⓘ Mica-Beryl Mine (MRDS - 10013705)	[Columbite-(Fe)] Ralph Parkes
Clear Creek County Dailey Mining District (Jones Pass Mining District) ⓘ Henderson Mine	[Columbite-(Fe)] Freeport-McMoRan
El Paso County Cheyenne Mining District (St. Peters Dome Mining District) ⓘ St Peters Dome	[Columbite-(Fe)] Pavel M. Kartashov analytical data (2011)
ⓘ Pikes Peak	[Columbite-(Fe)] Muntyan et al. (1985)
ⓘ Stove Mountain (Cookstove Mountain)	[Columbite-(Fe)] Hanson et al. (2013)
Fremont County ⓘ Devil's Hole Mine	[Columbite-(Fe)] Eckel et al. (1997)
Gunnison County Quartz Creek Pegmatite Mining District ⓘ Brown Derby Mine	[Columbite-(Fe)] Rocks & Min.: 24:233-234. +1 other reference
ⓘ Brown Derby No. 1	[Columbite-(Fe)] King (n.d.) +1 other reference
ⓘ Jefferson County	[Columbite-(Fe)]
Clear Creek pegmatite Province ⓘ Burroughs Mine (Traut-Rudin-Anderson Pegmatite; Sunrise Peak Mine)	[Columbite-(Fe)] Buckskin Minerals
South Platte Pegmatite Mining District ⓘ Little Patsy pegmatite	[Columbite-(Fe)] www.mindat.org (2016) +2 other references
Larimer County Crystal Mountain Pegmatite Mining District (Storm Mountain Mining District) ⓘ Beryl No. 1 Claim	[Tantalite-(Fe)] Eckel et al. (1997)
ⓘ Big Boulder Mine (Big Boulder Beryl Mine)	[Tantalite-(Fe)] Eckel et al. (1997)
Park County ⓘ Crystal Peak area	[Columbite-(Fe)] Eckel et al. (1997)
ⓘ McGuire pegmatite (Lone Lode; Lonesome pegmatite)	[Columbite-(Fe)] AmMin 84:754-763
ⓘ Topaz Mountain Gem Mine (Matucat Road deposits)	[Columbite-(Fe)] Dorris (2007)
Teller County ⓘ Crystal Peak	[Columbite-(Fe)] Eckel et al. (1997)
ⓘ Smoky Hawk claim	[Columbite-(Fe)] Joseph Dorris (2016)
ⓘ Wild Blue Indian prospect	[Columbite-(Fe)] Mathew Crystalman
Connecticut Fairfield County Bethel ⓘ Biermann Quarries (Bethel quarries; Codfish Hill Quarry)	[Tantalite-(Fe)] Fred Davis collection
Redding Branchville ⓘ Fillow Quarry	[Columbite-(Fe)] Cameron +6 other references
Hartford County Glastonbury South Glastonbury ⓘ Howe Quarry (Howe #1 Quarry; Huspband Quarry)	[Columbite-(Fe)] Betts (1999)
ⓘ Simpson prospect #1	[Columbite-(Fe)] Tony Albini Collection
ⓘ Simpson Quarry (Wiarda Quarry)	[Columbite-(Fe)] P. Cristofono collection
ⓘ Spinelli prospect (Spinelli quarry)	[Columbite-(Fe)] Davis (2011) +1 other reference
Litchfield County New Milford Upper Merryall ⓘ Roebling Quarry	[Columbite-(Fe)] Elwell (1937)
Middlesex County East Hampton ⓘ Anderson No. 2 Mica Mine ?	[Columbite-(Fe)] Tony Albini Collection
Cobalt ⓘ State Forest Quarry No. 2	[Columbite-(Fe)] King (n.d.)
ⓘ Nathan Hall Quarry	[Columbite-(Fe), Tantalite-(Fe)] Moritz (n.d.)
ⓘ Slocum prospect	[Columbite-(Fe)] Rocks & Min.: 12:145. +2 other references
ⓘ State Forest Quarry No. 1	[Columbite-(Fe)] Moritz (n.d.)
Haddam ⓘ Chrysoberyl locality	[Columbite-(Fe)] Torrey (1822a) +2 other references
ⓘ Civilian Conservation Corps prospect (CCC prospect; Cook columbite prospect)	[Columbite-(Fe)] Hunt (1852)
Haddam Neck ⓘ Gillette Quarry (J-J Mine; Haddam Neck Quarry)	[Columbite-(Fe)] Bowman (1902) +1 other reference
ⓘ Rock Landing Quarry (Capt. Rohrback Quarry)	[Columbite-(Fe)] Montague (1937) +1 other reference
ⓘ John Salak Quarry	[Columbite-(Fe)] Schairer (1931)
Middletown ⓘ Tollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry)	[Columbite-(Fe)] Dana (1837) +2 other references
White Rock Mining District ⓘ Riverside Quarry (Western Quarry)	[Columbite-(Fe)] Moritz (n.d.)
ⓘ White Rocks Quarry (Consolidated Quarry)	[Columbite-(Fe)] Moritz (n.d.) +1 other reference
Portland ⓘ Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry)	[Columbite-(Fe)] Rocks & Min.: 16: 164-167. +2 other references
ⓘ Bordonaro Quarry	[Columbite-(Fe)] Moritz (n.d.)
ⓘ Case Quarries	[Columbite-(Fe)] Cameron et al. (1954)
ⓘ Case Quarry No. 1	[Columbite-(Fe)] Harold Moritz Collection
ⓘ Case Quarry No. 2	[Columbite-(Fe)] Webster (1978)
ⓘ Case Quarry No. 3	[Columbite-(Fe)] Cameron et al. (1954)
Collins Hill Strickland pegmatite ⓘ Strickland Quarry	[Columbite-(Fe)] Ralph Lieser of Pappy’s Beryl Shop +3 other references
ⓘ Hale Quarry (Andrews Quarry; Glastonbury Quarry)	[Columbite-(Fe)] Foye (1922) +1 other reference
ⓘ Penfield Quarry (Oak Leaf Quarry)	[Columbite-(Fe)] Rocks & Min.: 12:145. +1 other reference
ⓘ Walden Gem Quarry	[Columbite-(Fe)] Seaman (1963)
Georgia Cherokee County Ball Ground Mining District Ball Ground ⓘ Amphlett Mica Mine (Franklin Mine)	[Columbite-(Fe)] Rocks & Min.:64:189.
Paulding County Hiram ⓘ C. W. Dean Mine (Dean Mine)	[Columbite-(Fe)] Rocks & Min.:64:202.
Troup County LaGrange ⓘ Minerals Processing Company Mine (Foley Mine)	[Columbite-(Fe)] Rocks & Min.: 64:204.
ⓘ Minerals Processing Company Mine No. 8 (Hogg Estate Mine)	[Columbite-(Fe)] Rocks & Minerals 81:180-186
Smiths Crossroad ⓘ Hogg Mine (Oxford Mine)	[Columbite-(Fe)] USGS GEOLOGICAL SURVEY PROFESSIONAL ...
Idaho Clearwater County Pierce City Mining District (Placer Mining District) Pierce Divide occurrence ⓘ Fohl picnic area	[Tantalite-(Fe)] XRD by Jim Wilson of Weber State
ⓘ Sawtooth Batholith	[Columbite-(Fe)] Rocks & Min. 70:246 +3 other references
Maine Androscoggin County Auburn East Mount Apatite Mining District ⓘ Turner Quarries	[Columbite-(Fe)] King (n.d.)
West Mount Apatite Mining District ⓘ Pulsifer Quarry & Dionne extension	[Columbite-(Fe)] Rocks and Minerals (1997)
Minot ⓘ Minot #2 prospect	[Columbite-(Fe)] Clifford Trebilcock
ⓘ Pitts-Tenney pegmatite prospect	[Columbite-(Fe)] King (n.d.) +1 other reference
Poland ⓘ Berry-Havey Quarry	[Columbite-(Fe)] Jeffrey Morrison et al. (2018)
Cumberland County Baldwin West Baldwin ⓘ Estes Quarry	[Columbite-(Fe)] Rocks & Min. (May, 1999) +1 other reference
Brunswick ⓘ LaChance Quarry	[Columbite-(Fe)] Cameron +2 other references
Pownal ⓘ Tash Ledge locality	[Columbite-(Fe)] Morrill
ⓘ Tryon Mountain Quarries	[Columbite-(Fe)] King et al. (1994)
Standish Oak Hill area ⓘ Oak Hill columbite locality	[Columbite-(Fe)] King et al. (1994)
Franklin County Madrid ⓘ Phillips Pegmatite	[Tantalite-(Fe)] Wise et al. (2012)
Oxford County Albany ⓘ Bumpus Quarry	[Columbite-(Fe)] King (2009)
ⓘ Charles Pingree Ledge Quarry	[Columbite-(Fe)] King (2009)
ⓘ Guy Johnson Quarry	[Columbite-(Fe)] King (2009)
ⓘ Scribner Ledge Quarry	[Columbite-(Fe)] King (2009)
ⓘ Songo Pond Quarry (Kimball Ledge Quarry)	[Columbite-(Fe)] King (2009)
ⓘ Wentworth Quarry	[Columbite-(Fe)] King (2009)
Buckfield ⓘ Orchard Quarry	[Columbite-(Fe)] SEM-EDS analysis of the ferrocolumbite +2 other references
Gilead ⓘ Wheeler Quarries	[Columbite-(Fe)] King (2009)
Greenwood ⓘ Hayes Ledge Quarries (East and West)	[Columbite-(Fe)]
ⓘ Heikkinen Quarry	[Columbite-(Fe)] King (n.d.)
Uncle Tom Mountain ⓘ Emmons Quarry	[Columbite-(Fe)] Falster et al. (2006) +2 other references
Hebron Mount Rubellite ⓘ Hibbs Quarry	[Columbite-(Fe)] King (n.d.) +2 other references
Newry ⓘ Bell pit	[Columbite-(Fe)] King et al. (1994) +1 other reference
ⓘ Crooker Gem Pegmatite Quarries	[Columbite-(Fe)] King et al. (1994) +1 other reference
ⓘ Dunton Gem Quarry	[Tantalite-(Fe)] Vandall King
ⓘ Kinglet Prospect	[Columbite-(Fe)] Hess et al.
ⓘ Nevel Quarry	[Columbite-(Fe)] King et al. (6)
ⓘ Plumbago North Pegmatite	[Columbite-(Fe)] Simmons et al. (2022)
ⓘ Rose Quartz crystal locality (Pegmatite 24)	[Columbite-(Fe)] King et al. (6) +1 other reference
ⓘ Timberlands Lithium Pegmatite Prospect	[Columbite-(Fe)] King (n.d.)
Norway ⓘ Dunn Quarry	[Columbite-(Fe)] King (2000)
ⓘ Horse Hill locality	[Columbite-(Fe)] King (n.d.)
Paris ⓘ Hooper Ledge Quarry	[Columbite-(Fe)] King et al. (1994) +1 other reference
ⓘ Mount Marie Quarries	[Columbite-(Fe)] King (n.d.)
ⓘ Ryerson Hill Quarries	[Columbite-(Fe)] King (n.d.) +1 other reference
ⓘ Slattery Quarry	[Columbite-(Fe)] King (n.d.)
Peru ⓘ Perry Petalite prospect	[Columbite-(Fe)] Dionne et al. (2014)
Rumford ⓘ Black Mountain Quarry	[Columbite-(Fe)] Wise +1 other reference
ⓘ Frank Perham prospect	[Columbite-(Fe)] King (n.d.)
ⓘ Lookout Quarry	[Columbite-(Fe)] Tim Blake and Scott Soucey specimens
ⓘ Pechnic prospect	[Columbite-(Fe)] King (n.d.)
ⓘ Red Hill quarries	[Columbite-(Fe)] King (n.d.)
Stoneham ⓘ Cole Quarry	[Columbite-(Fe)] King (n.d.) +1 other reference
ⓘ Lord Hill Quarry (Lord Hill Mine)	[Columbite-(Fe)] Bastin (1911) +1 other reference
Stow ⓘ Deer Hill	[Columbite-(Fe)] King et al. (1994)
ⓘ Intergalactic Pit	[Columbite-(Fe)] King (n.d.)
Waterford ⓘ Knight #1 and #2 Quarries	[Columbite-(Fe)] Barton (1968) +1 other reference
ⓘ Saunders Mica Quarry	[Columbite-(Fe)]
Sagadahoc County Bowdoin ⓘ Booker West Quarry	[Columbite-(Fe)] John Raymond
ⓘ Coombs Quarries	[Columbite-(Fe)] Cameron +2 other references
Georgetown ⓘ Howard-Collins Quarry	[Columbite-(Fe)] King et al. (1994)
Phippsburg ⓘ Robbins Quarry	[Columbite-(Fe)] Morrill
Topsham Cathance River Nature Preserve ⓘ Swamp #1 Quarry	[Columbite-(Fe)] King et al. (1994)
ⓘ Swamp #2 quarry	[Columbite-(Fe)] King et al. (1994)
ⓘ Fisher Quarry	[Columbite-(Fe)]
Highland Green ⓘ Consolidated #1 Quarry	[Columbite-(Fe)] King et al. (1994)
ⓘ Consolidated #2 Quarry (Purington Quarry)	[Columbite-(Fe)] King et al. (1994)
ⓘ Mount Ararat Quarries	[Columbite-(Fe)] Bastin (1911) +2 other references
ⓘ Metcalf Quarry	[Columbite-(Fe)] King et al. (1994)
ⓘ Porcupine Hill Quarry	[Columbite-(Fe)] King et al. (1994) +1 other reference
ⓘ Russell Brothers Quarry	[Columbite-(Fe)] Cameron +2 other references
ⓘ Standpipe Hill Quarries	[Columbite-(Fe)] King et al. (1994) +1 other reference
ⓘ Yedlin Locality	[Columbite-(Fe)] Moritz (n.d.) +1 other reference
ⓘ Staples Quarry	[Columbite-(Fe)] King et al. (1994) +1 other reference
ⓘ Trenton Quarry	[Columbite-(Fe)] King et al. (1994) +1 other reference
ⓘ William Willes #1 Quarry	[Columbite-(Fe)]
Massachusetts Hampshire County Chesterfield ⓘ Clark Ledge pegmatite locality	[Columbite-(Fe)] "Western Massachusetts Mineral ...
Norfolk County Braintree ⓘ Gun Club Pegmatite locality	[Columbite-(Fe)] Ex: Andrew Abban Collection 1993
Michigan Dickinson County Randville ⓘ Groveland Mine	[Tantalite-(Fe)] Travis Olds collection
ⓘ Unnamed Pegmatite quarry ("Groveland" pegmatite)	[Columbite-(Fe), Tantalite-(Fe)] Heinrich et al. (2004) +1 other reference
ⓘ Sturgeon River Pegmatite Quarry	[Columbite-(Fe)] Personally collected and observed in ...
Marquette County Humboldt Township ⓘ Black River pegmatite	[Columbite-(Fe)] Columbite- (Fe)
ⓘ Crockley pegmatite	[Columbite-(Fe)] Heinrich et al. (2004)
ⓘ Unnamed outcrop (2)	[Columbite-(Fe)] Heinrich et al. (2004)
Republic ⓘ Humboldt granite	[Columbite-(Fe)] Buchholz et al. (2013)
Republic Township Republic ⓘ Unnamed pegmatite (3)	[Columbite-(Fe)] Heinrich et al. (2004)
Montana Ravalli County Mineral Point Mining District Alta ⓘ Dark Star group (Dark Star claim; Sheep Creek Adit No. 1; Sheep Creek Adit No. 2)	[Columbite-(Fe)] Tucker (n.d.) +2 other references
ⓘ Columbine claims (Columbite Occurrence (MRDS - 10221637))	[Columbite-(Fe)] Gobla (2012)
ⓘ Tirebiter No. 5 & No. 6 prospect (Tirebiter claim; Mona Lisa)	[Columbite-(Fe)] Gobla (2012)
Rye Creek Mining District ⓘ Mace Prospect (Long Prospect)	[Columbite-(Fe)] Tucker (n.d.) +1 other reference
Nevada Clark County ⓘ Eldorado Mountains	[Columbite-(Fe)] Castor et al. (2004)
Eldorado Mining District (Colorado Mining District) ⓘ Newberry prospect	[Columbite-(Fe)] Castor et al. (2004)
ⓘ Newberry Mountains	[Columbite-(Fe)] Castor et al. (2004)
Washoe County ⓘ Dogskin Mountain Mining District	[Columbite-(Fe)] Russ Rizzo Collection (analyzed by J. Attard)
White Pine County Robinson Mining District Ely ⓘ Garnet Hill	[Columbite-(Fe)] Castor et al. (2004)
New Hampshire Carroll County Albany Blue Mountain ⓘ Moose pocket	[Columbite-(Fe)] Rocks & Min. July-Aug 2005 +1 other reference
ⓘ Pyrochlore pocket	[Columbite-(Fe)] Rocks & Minerals (1990)
Conway North Conway ⓘ Black Cap	[Columbite-(Fe)] Camp (2011)
Redstone ⓘ Redstone "Red Granite" quarry	[Columbite-(Fe)] Camp (2011)
Wakefield ⓘ Ham and Weeks Mine	[Columbite-(Fe)] Rocks & Min. 80:256 (2005)
Grafton County Alexandria ⓘ E.E. Smith Mine	[Columbite-(Fe)] Morrill +1 other reference
ⓘ Pattuck Quarry	[Columbite-(Fe)] Morrill +2 other references
Bethlehem ⓘ North Sugarloaf Mountain locality	Rocks & Min 65:346 (1990) +1 other reference
Grafton ⓘ Ruggles Mine	[Columbite-(Fe)] Morrill +1 other reference
Groton ⓘ Palermo No. 1 Mine	[Columbite-(Fe), Tantalite-(Fe)]
ⓘ Palermo No. 2 Mine	[Columbite-(Fe)] Whitmore et al. (2004)
ⓘ Valencia Mine	[Columbite-(Fe)] Smith (2005)
Orange ⓘ Keyes Mica Quarries	[Tantalite-(Fe)] Thompson et al. (2022)
Rockingham County Raymond ⓘ Chandler Mine	[Columbite-(Fe)] USGS Prof Paper 353 +2 other references
Sullivan County ⓘ Acworth	[Columbite-(Fe)] King (n.d.)
New Jersey Sussex County Vernon Township McAfee ⓘ McAfee Quarry ?	[Columbite-(Fe)] van Rossen (2026)
New Mexico Grant County ⓘ Rabb Canyon	[Columbite-(Fe)] Northrup
Rio Arriba County Petaca Mining District South Petaca ⓘ Globe pegmatite (Globe Mine)	[Tantalite-(Fe)] Ex. Forrest Cureton
New York New York City Manhattan (New York County) ⓘ 185th Street & Harlem Speedway (Harlem River Drive)	[Columbite-(Fe)] John H. Betts (2009)
Washington Heights ⓘ Fort George (192nd Street & Audubon Avenue)	[Columbite-(Fe)] John H. Betts (2009)
Westchester County Bedford ⓘ Baylis Quarry (Bayliss Quarry)	[Columbite-(Fe)] Rocks & Min.: 23:710-712.
ⓘ Kinkel Quarry	[Columbite-(Fe)] Rocks & Min.: 23:710-712.
North Carolina ⓘ Alexander County	[Columbite-(Fe)] Bernard et al. (2004)
Ashe County ⓘ Todd	[Tantalite-(Fe)] www.excaliburmineral.com Smithsonian ...
Burke County ⓘ Brittain Prospect ?	[Columbite-(Fe)] C.W. Allen collection
Cleveland County Kings Mountain ⓘ Foote Lithium Co. Mine	[Columbite-(Fe)] Rocks and Minerals +2 other references
Davie County ⓘ Seidtz Mine	[Columbite-(Fe)] www.John Betts.com
Gaston County ⓘ Hallman-Beam Mine (FMC-Lithco Mine; Hallman-Bean Mine; Lithium Corporation of America Mine)	[Columbite-(Fe)] Wenger et al. (1991)
ⓘ LCA Mine	[Columbite-(Fe), Tantalite-(Fe)] Rocks & Min.: 60:89.
Mitchell County Deake ⓘ Deake Mine	[Columbite-(Fe)] Dana 7:I:695 +1 other reference
Spruce Pine Greasy Creek Township ⓘ Wiseman Mine (Old Mart Wiseman Mine; Sullins-Wiseman Mine)	[Columbite-(Fe)] Genth (1891)
ⓘ McKinney Mine (Power Mill Creek Mine)	[Columbite-(Fe)] Rocks & Min.: 60:92.
Yancey County Burnsville Hurricane Mountain ⓘ Ray Mica Mine	[Columbite-(Fe), Tantalite-(Fe)] Miller et al. (to be published by NCGS)
Pennsylvania Chester County Valley Township Wagontown ⓘ Steidler pegmatite	[Columbite-(Fe)] Mineral News
Rhode Island Washington County Westerly ⓘ Redstone Granite Quarry (Cherenzia Quarry)	[Columbite-(Fe)] Miller (1971)
South Dakota Custer County Custer Mining District Custer ⓘ Old Mike mine (Great Northern; Old Mike M.S.2212)	[Tantalite-(Fe)] Danas System of Mineralogy 7th ed
Lawrence County Tinton Pegmatite Mining District ⓘ Upper Bear Gulch	[Tantalite-(Fe)] Černý et al. (1992) +1 other reference
Pennington County Keystone Mining District Keystone ⓘ Bob Ingersoll Mine	[Columbite-(Fe)] various added photos
ⓘ Etta Mine	[Columbite-(Fe)] Roberts
ⓘ White Cap Mine	[Columbite-(Fe)] Jessica Simonoff photo
Texas Hudspeth County ⓘ Sierra Blanca Peaks	[Columbite-(Fe)] Am. Min. 74:865-869 (1989)
ⓘ Round Top prospects	[Columbite-(Fe)] Elliott (2018)
Virginia Amelia County Winterham ⓘ Morefield Mine (Morefield pegmatite)	[Columbite-(Fe), Tantalite-(Fe)] Rocks & Min.: 8:143-144. +1 other reference
Wisconsin Florence County Fern Pine River pegmatites ⓘ Animikie Red Ace pegmatite	[Columbite-(Fe)] Falster et al. (1996)
Marathon County Wausau Intrusive Complex Nine Mile Pluton ⓘ Beilke Quarry	[Columbite-(Fe)] Buchholz (1999)
ⓘ Charneski pit (Ladick East pit)	[Columbite-(Fe)] Buchholz et al. (2002)
ⓘ Koss pit	[Columbite-(Fe), Tantalite-(Fe)] www.uwrf.edu/~wc01
ⓘ McGuire pit (Salzman Quarry; Salzman Enterprises)	[Columbite-(Fe)] Rocks & Min. (2007)
Stettin pluton ⓘ Stettin pegmatite	[Columbite-(Fe)] Buchholz et al. (2017)
ⓘ Woodland Drive	[Columbite-(Fe)] Buchholz et al. (2012)
Wood County ⓘ Cary Mound area quarries	[Columbite-(Fe)] Rocks & Minerals 82:409-410
ⓘ Haske Quarry	[Columbite-(Fe)] Buchholz et al. (2006)

Uzbekistan
Navoiy Uchkuduk District ⓘ Altyntau granite pluton	[Columbite-(Fe)] Mineraly Uzbekistana (Minerals of the Uzbekistan)

Zimbabwe
Manicaland Buhera District ⓘ Corundum Blue Mine	[Tantalite-(Fe)] Cairncross (2004)
Matabeleland North Hwange District Dete (Dett) ⓘ Kamativi Mine	[Columbite-(Fe)] Gallagher (1967)
ⓘ Kapata claims	[Tantalite-(Fe)] Wolfgang Hampel
ⓘ San claims	[Columbite-(Fe)] Southern Rhodesia Geological Survey (1959)

The Moon
Taurus-Littrow Valley ⓘ Apollo 17 landing site	[Tantalite-(Fe)] Mokhov et al. (2018)

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