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Tapiolite-(Fe)-Tapiolite-(Mn) Series

A solid-solution series between two end-member minerals

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Edit Tapiolite-(Fe)-Tapiolite-(Mn) Series Add Synonym Edit CIF structures Clear Cache

Tapiolite-(Fe)

Copper Mountain pegmatite District, Bridger Mts, Fremont County, Wyoming, USA

Tapiolite-(Fe)

Nathan Hall Quarry, East Hampton, Middlesex County, Connecticut, USA

Tapiolite-(Fe)

Alto Quixaba claim, Quixaba, Frei Martinho, Paraíba, Brazil

Tapiolite-(Fe)

Copper Mountain pegmatite District, Bridger Mts, Fremont County, Wyoming, USA

Tapiolite-(Fe)

Nathan Hall Quarry, East Hampton, Middlesex County, Connecticut, USA

Tapiolite-(Fe)

Alto Quixaba claim, Quixaba, Frei Martinho, Paraíba, Brazil

Tapiolite-(Fe)

Copper Mountain pegmatite District, Bridger Mts, Fremont County, Wyoming, USA

Tapiolite-(Fe)

Nathan Hall Quarry, East Hampton, Middlesex County, Connecticut, USA

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About Tapiolite-(Fe)-Tapiolite-(Mn) SeriesHide

Crystal System:

Tetragonal

Series Formula:

Fe²⁺Ta₂O₆ to Mn²⁺Ta₂O₆

A series between Tapiolite-(Fe) and Tapiolite-(Mn)

Unique IdentifiersHide

Mindat ID:

8780

Long-form identifier:

mindat:1:1:8780:9

Similar NamesHide

Tapiolite		(Fe,Mn)(Ta,Nb)₂O₆
Tapiolite-(Fe)	A valid IMA mineral species - grandfathered	Fe²⁺Ta₂O₆
Tapiolite-(Mn)	A valid IMA mineral species	Mn²⁺Ta₂O₆

Crystallography of Tapiolite-(Fe)-Tapiolite-(Mn) SeriesHide

Crystal System:

Tetragonal

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)
0018725	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018724	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018723	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018722	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018721	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018720	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018719	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018718	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018717	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018716	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018715	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018714	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018713	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018712	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018711	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018710	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018709	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018708	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018707	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018706	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018705	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018704	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018703	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018702	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018701	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018700	Tapiolite-(Fe)	Zema M, Tarantino S C, Giorgiani A (2006) Structural changes induced by cation ordering in ferrotapiolite Mineralogical Magazine 70 319-328	2006	Kimito, Finland	293
0018647	Tapiolite-(Fe)	Peters E, Muller-Buschbaum H (1995) Hochtemperatursynthese und Kristallchemie der Oxotantalate Cr2+0.761Ta2.095O6 und FeTa2O6 Zeitschrift fur Naturforschung B50 712-716	1995	synthetic	293
0013576	Tapiolite-(Fe)	Eicher S M, Greedan J E, Lushington K J (1986) The magnetic properties of FeTa2O6. Magnetic structure and low-dimensional behavior Journal of Solid State Chemistry 62 220-230	1986	synthetic	293
0017875	Tapiolite-(Fe)	von Heidenstam O (1968) Neutron and X-ray diffraction studies on tapiolite and some synthetic substances of trirutile structure Arkiv for Kemi 28 375-387	1968		293
0017874	Tapiolite-(Fe)	von Heidenstam O (1968) Neutron and X-ray diffraction studies on tapiolite and some synthetic substances of trirutile structure Arkiv for Kemi 28 375-387	1968		293
0017873	Tapiolite-(Fe)	von Heidenstam O (1968) Neutron and X-ray diffraction studies on tapiolite and some synthetic substances of trirutile structure Arkiv for Kemi 28 375-387	1968		293
0017872	Tapiolite-(Fe)	von Heidenstam O (1968) Neutron and X-ray diffraction studies on tapiolite and some synthetic substances of trirutile structure Arkiv for Kemi 28 375-387	1968		293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Tapiolite-(Fe)'
loop_
_publ_author_name
'Zema M'
'Tarantino S C'
'Giorgiani A'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 70 
_journal_year 2006
_journal_page_first 319
_journal_page_last 328
_publ_section_title
;
 Structural changes induced by cation ordering in ferrotapiolite
 Note: Crystal Kim24_q3, treated at 700 C for 450 min
;
_database_code_amcsd 0018725
_chemical_compound_source 'Kimito, Finland'
_chemical_formula_sum 'Fe.999 Ta1.871 Nb.13 O6'
_cell_length_a 4.7561
_cell_length_b 4.7561
_cell_length_c 9.2030
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 208.176
_exptl_crystal_density_diffrn      8.015
_symmetry_space_group_name_H-M 'P 42/m n m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,-x,z'
  'y,x,-z'
  '1/2+y,1/2-x,1/2-z'
  '1/2-y,1/2+x,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  'x,y,-z'
  '-x,-y,z'
  'y,x,z'
  '-y,-x,-z'
  '1/2-y,1/2+x,1/2-z'
  '1/2+y,1/2-x,1/2+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
Fe(A)   0.00000   0.00000   0.00000   0.98500
Ta(A)   0.00000   0.00000   0.00000   0.01500
Fe(B)   0.00000   0.00000   0.33116   0.00700
Ta(B)   0.00000   0.00000   0.33116   0.92800
Nb(B)   0.00000   0.00000   0.33116   0.06500
O1   0.31180   0.31180   0.00000   1.00000
O2   0.29430   0.29430   0.32190   1.00000

Synonyms of Tapiolite-(Fe)-Tapiolite-(Mn) SeriesHide

Ferrotapiolite-Manganotapiolite Series

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 Tapiolite-(Fe)-Tapiolite-(Mn) SeriesHide

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References for Tapiolite-(Fe)-Tapiolite-(Mn) SeriesHide

Reference List:

Localities for Tapiolite-(Fe)-Tapiolite-(Mn) SeriesHide

Showing 109 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.


Argentina
Catamarca Province Sierra de Ancasti El Portezuelo ⓘ El Portezuelo Granite	[Tapiolite-(Fe)] Colombo et al. (2011)
Salta Province Cachi Department Nevado de Palermo ⓘ El Quemado mining district	[Tapiolite-(Fe)] López de Azarevich et al. (2021)
La Poma Department El Quemado mining district ⓘ La Elvirita deposit	[Tapiolite-(Fe)] Galliski et al. (2001)
San Luis Province Chacabuco Department Sierra de la Estanzuela ⓘ La Viquita pegmatite	[Tapiolite-(Fe)] Galliski et al. (1999) +1 other reference
ⓘ San Elías mine	[Tapiolite-(Fe)] minsocam.org (2003)

Australia
Western Australia Bridgetown-Greenbushes Shire Greenbushes tinfield ⓘ Greenbushes Mine	[Tapiolite-(Fe)] Jacobson et al. (2007)
ⓘ Greenbushes Sn placers	[Tapiolite-(Fe)] Wise et al. (1996)
Port Hedland Shire Strelley Station ⓘ Strelley pegmatite	[Tapiolite-(Fe)] Material originally from the Australian ...

Austria
Carinthia Spittal an der Drau District Spittal an der Drau Lieser ravine ⓘ Lippnik feldspar quarry	[Tapiolite-(Fe)] Walter (1998)
Wolfsberg ⓘ Feldspar quarry	[Tapiolite-(Fe)] Niedermayr et al. (1995)

Brazil
Minas Gerais Divino das Laranjeiras ⓘ Linópolis	[Tapiolite-(Fe)] Luis Menezes
Galiléia Sapucaia do Norte ⓘ Sapucaia mine	[Tapiolite-(Fe)]
ⓘ Governador Valadares	[Tapiolite-(Fe)] Rick Dalrymple
ⓘ São Geraldo do Baixio	[Tapiolite-(Fe)] Ron Gyllenhammer Collection
Paraíba Frei Martinho ⓘ Esperança pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
ⓘ Mourão pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
Quixaba ⓘ Alto Quixaba claim	[Tapiolite-(Fe)] Witzke et al. (2011)
ⓘ Joaquim Cigano claim	[Tapiolite-(Fe)] Lapis 3/2008 (ad)
Junco do Seridó ⓘ Alto Cajazeiras	[Tapiolite-(Fe)] Pereira das Neves et al. (2018)
Nova Palmeira ⓘ Corredor pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2005) +1 other reference
ⓘ Roncadeira pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008) +1 other reference
ⓘ Serraria pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
Pedra Lavrada ⓘ Bento pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
Picuí ⓘ Caiçara pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
Tenório ⓘ Seridozinho pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
Rio Grande do Norte Acari ⓘ Pitombeira pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
Carnaúba dos Dantas ⓘ Salgadinho pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
ⓘ Taboa pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)
Equador ⓘ Alto do Giz pegmatite	[Tapiolite-(Fe)] Paul Bongaerts collection +1 other reference
ⓘ Alto do Jacu	[Tapiolite-(Fe)]
Parelhas ⓘ Carcará pegmatite	[Tapiolite-(Fe)] Beurlen et al. (2008)

Canada
Manitoba Lac-du-Bonnet area Bernic Lake ⓘ Tanco Mine	[Tapiolite-(Fe)] 153-155. +2 other references
Greer Lake ⓘ Annie Claim #3 pegmatite	[Tapiolite-(Fe)] Masau et al. (2000) +1 other reference
Northwest Territories Yellowknife Pegmatite field ⓘ Redout Lake Pegmatite	[Tapiolite-(Fe)] Wise et al. (1990)
Ontario Kenora District Pakeagama Lake Area PAK Lithium Project ⓘ Pakeagama Lake pegmatite	[Tapiolite-(Fe)] Breaks
Paterson Lake Area ⓘ Marko’s pegmatite	[Tapiolite-(Fe)] ontariominerals.com +2 other references
ⓘ Separation Rapids Lithium Project (Separation Lake area)	[Tapiolite-(Fe)] Avalon Advanced Materials Inc.
Skinner Lake Area ⓘ Musselwhite Mine	[Tapiolite-(Fe)] Taylor et al. (2001)

China
Fujian Nanping Yanping District Nanping pegmatite field ⓘ Pegmatite No. 31	[Tapiolite-(Fe)] Rao +7 other references
Xinjiang Ili Kazakh Autonomous Prefecture Altay Prefecture (Aletai Prefecture) Fuyun Co. (Koktokay Co.) Koktokay pegmatite field (Keketuohai pegmatite field) Altay Mine ⓘ Koktokay No. 3 pegmatite (Altay No. 3 pegmatite)	[Tapiolite-(Fe)] Zhang et al. (2004) +1 other reference
Yunnan Baoshan Longling County ⓘ Huangliangou Be-Nb-Ta pegmatite deposit	[Tapiolite-(Fe)] Gao et al. (2026)

Czech Republic
Karlovy Vary Region Sokolov District Krásno ⓘ Huber stock (Huber shaft; Hub stock)	[Tapiolite-(Fe)] René et al. (2011)
Olomouc Region Šumperk District Velké Losiny Maršíkov (Marchendorf) ⓘ Střelecký důl (Scheibengraben)	[Tapiolite-(Fe)] Novák +2 other references
South Bohemian Region České Budějovice District Horní Stropnice ⓘ Šejby	[Tapiolite-(Fe)] Pavlíček V. et al.: Pegmatit ...

DR Congo
South Kivu Kalehe Territory Numbi ⓘ Mungwe mine	[Tapiolite-(Fe)] Loun et al. (2018)

Egypt
Red Sea Governorate Abu Dabbab Massif ⓘ Abu Dabbab Ta-Sn deposit	[Tapiolite-(Fe)] Fengjun Nie et al. (2013)

Finland
Kanta-Häme Hämeenlinna ⓘ Katuma	[Tapiolite-(Fe)] Ilkka Nmikkola collection
Tammela Sukula Pegmatites Kulmala ⓘ Tapiolite-(Fe) type locality	[Tapiolite-(Fe)] Nordenskiöld (1863)
Lapland Inari ⓘ Lemmenjoki	[Tapiolite-(Fe)] kojonen
Pirkanmaa Orivesi Eräjärvi area ⓘ Keskimetsä pegmatite	[Tapiolite-(Fe)] Lahti (2000)
ⓘ Seppälänranta pegmatite	[Tapiolite-(Fe)] Lahti (2000)
ⓘ Tiainen pegmatite	[Tapiolite-(Fe), Tapiolite-(Mn)] Lahti et al. (1983)
ⓘ Viitaniemi pegmatite	[Tapiolite-(Fe), Tapiolite-(Mn)] Lahti (2000) +1 other reference
South Ostrobothnia Seinäjoki ⓘ Pajuluoma	[Tapiolite-(Fe)] Alviola
Southwest Finland Kimitoön (Kemiönsaari) Kimitoön Island ⓘ Rosendal pegmatite	[Tapiolite-(Fe)] Clark et al. (1978) +1 other reference
ⓘ Skogsböle (Skogböle)	[Tapiolite-(Fe)] Clark et al. (1978)
Salo Kisko ⓘ Maantienleikkaus Li-pegmatite	[Tapiolite-(Fe)] Jyrki Autio Collection 2018

Germany
Rhineland-Palatinate Germersheim Jockgrim Rheinzabern ⓘ Holcim gravel pit	[Tapiolite-(Fe)] Oberthür et al. (2016)

Italy
Lombardy Lecco Province Colico ⓘ Piona Peninsula	[Tapiolite-(Fe)] VIGNOLA et al. (2007)
ⓘ Malpensata pegmatitic dyke (Olgiasca-Malpensata; Croce Quarry; Secondi dyke)	[Tapiolite-(Fe)] Banti et al. (2011) +1 other reference
Sondrio Province Bodengo Valley ⓘ Soè Valley	[Tapiolite-(Fe)] Guastoni et al. (2007)
Chiesa in Valmalenco ⓘ Sissone Valley	[Tapiolite-(Fe)] Marchesini et al. (2025) +1 other reference
Piedmont Verbano-Cusio-Ossola Province Craveggia Rio Vasca ⓘ Piano del Lavonchio (Piano dei Lavonchi)	[Tapiolite-(Fe)] Roggiani (1970) +1 other reference
Druogno Orcesco ⓘ Alpe Rosso	[Tapiolite-(Fe)] Piccoli et al. (2007)
Trontano Cosasca ⓘ Grignaschi Quarry	[Tapiolite-(Fe)] Piccoli et al. (2007)
Pizzo Marcio ⓘ Pizzo Marcio North dyke	[Tapiolite-(Fe)] Piccoli et al. (2007) +5 other references
ⓘ Rio Graia	[Tapiolite-(Fe)] Callegari A. (2002)

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

Mozambique
Zambezia Province ⓘ Alto Ligonha Pegmatite Field	[Tapiolite-(Fe)] Wilson et al. (2000)
Alto Mólocuè District ⓘ Lice Pegmatite	[Tapiolite-(Fe)] Wilson et al. (2000)
ⓘ Malolo Pegmatite	[Tapiolite-(Fe)] Wilson et al. (2000)
Gilé District Muiane-Naipa group ⓘ Muiâne pegmatite (Muiâne mine; Emdal mines)	[Tapiolite-(Fe)] Wilson et al. (2000)

Norway
Østfold Råde ⓘ Berg	[Tapiolite-(Fe)] Kvamsdal (2023)

Portugal
Castelo Branco Idanha-a-Nova União das Freguesias de Zebreira e Segura ⓘ Segura Mines (Segura mining field)	[Tapiolite-(Fe)] Antunes et al. (2013)

Russia
Murmansk Oblast Kovdorsky District ⓘ Yona deposit	[Tapiolite-(Fe)] ...

Slovakia
Bratislava Region Bratislava Bratislava IV Devín ⓘ Jezuitské Lesy	[Tapiolite-(Fe)] Chudík et al. (2011)
Pezinok District Limbach ⓘ Limbach Brook	[Tapiolite-(Fe)] Uher et al. (2006)
Pezinok Slnečné Valley ⓘ Alluvial placers	[Tapiolite-(Fe)] Uher et al. (n.d.)
Trnava Region Piešťany District ⓘ Moravany nad Váhom	[Tapiolite-(Fe)] Uher et al. (Považský Inovec)
ⓘ Striebornica	[Tapiolite-(Fe)] Uher P. +1 other reference

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

Spain
Canary Islands Santa Cruz de Tenerife Province Tenerife ⓘ ~~Alcala~~	[Tapiolite-(Fe)] Dill et al. (2023)
Candelaria Barranco Hondo ⓘ ~~Lava flow~~	[Tapiolite-(Fe)] Dill et al. (2023)
Galicia Ourense Viana do Bolo ⓘ Penouta mines	[Tapiolite-(Fe)] Alfonso et al. (2018)

Sweden
Gävleborg County Gävle Bergby ⓘ Bergby pegmatite	- (n.d.)
Stockholm County Sigtuna Arlanda ⓘ Norrskogen	[Tapiolite-(Fe)]
Västerbotten County Skellefteå ⓘ Varuträsk	[Tapiolite-(Fe)] Černý et al. (2004)

Switzerland
Grisons Moesa Region San Vittore Monticello ⓘ Maiò Valley	[Tapiolite-(Fe)] Gramaccioli (1975) +2 other references
Ticino Locarno Brissago ⓘ Ponte Valley	[Tapiolite-(Fe)] Weiß (1989) +1 other reference
Riviera Riviera ⓘ Cresciano	[Tapiolite-(Fe)] Stalder et al. (1998)

USA
Arizona Yavapai County Bradshaw Mountains (Bradshaw Range) Castle Creek Mining District Castle Creek ⓘ Castle Creek placers	[Tapiolite-(Fe)] Anthony et al. (1995)
California San Diego County Warner Springs Mining District Warner Springs ⓘ Cryo-Genie Mine	[Tapiolite-(Fe)] Rocks & Minerals +1 other reference
Colorado Moffat County Great Divide Area ⓘ Housel Gulch Placer	[Tapiolite-(Fe)] Eckel et al. (1997)
Park County Lake George Beryllium area (Badger Flats Beryllium area; Mountain Dale) ⓘ pegmatite	[Tapiolite-(Fe)] Eckel et al. (1997)
Connecticut Middlesex County East Hampton ⓘ Nathan Hall Quarry	[Tapiolite-(Fe)] Leif DiValentino collection
Maine Franklin County D Township ⓘ Bemis Stream prospect	[Tapiolite-(Mn)] King et al. (1994) +1 other reference
Oxford County Buckfield ⓘ Bennett Quarry	[Tapiolite-(Fe)] MinRec. 25 (3)
Newry ⓘ Plumbago North Pegmatite	[Tapiolite-(Fe)] Simmons et al. (2022)
Peru ⓘ Perry Petalite prospect	[Tapiolite-(Fe)] Dionne et al. (2014)
Sagadahoc County Topsham ⓘ Fisher Quarry	[Tapiolite-(Fe)] King et al. (1994)
Michigan Dickinson County Randville ⓘ Unnamed Pegmatite quarry ("Groveland" pegmatite)	[Tapiolite-(Fe)] Buchholz et al. (2014)
New Hampshire Grafton County Groton ⓘ Palermo No. 2 Mine	[Tapiolite-(Fe)] Whitmore et al. (2004)
North Carolina Yancey County Burnsville Hurricane Mountain ⓘ Ray Mica Mine	[Tapiolite-(Fe)] "Mineralogy and History of the Ray Mica ...
Wisconsin Florence County Fern ⓘ Pine River pegmatites	[Tapiolite-(Fe)] Alexander Falster et al. (2018)
Marathon County Wausau Intrusive Complex Nine Mile pluton ⓘ McGuire pit (Salzman Quarry; Salzman Enterprises)	[Tapiolite-(Fe)] Rocks & Min. (2007)

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