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Dufrénite Group

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Photos of Dufrénite Group (453)Discuss Dufrénite Group

Dufrénite Group Gallery Search Photos of Dufrénite Group

Edit Dufrénite Group Add Synonym Edit CIF structures Clear Cache

Natrodufrénite

Fragas da Carvalhosa Mine, Felgar e Souto da Velha, Torre de Moncorvo, Bragança, Portugal

Dufrénite

Bel Air Mine, La Chapelle-Largeau, Mauléon, Bressuire, Deux-Sèvres, Nouvelle-Aquitaine, France

Natrodufrénite

Ste Barbe vein, Montmins mining district, Échassières, Vichy, Allier, Auvergne-Rhône-Alpes, France

Natrodufrénite

Fragas da Carvalhosa Mine, Felgar e Souto da Velha, Torre de Moncorvo, Bragança, Portugal

Dufrénite

Bel Air Mine, La Chapelle-Largeau, Mauléon, Bressuire, Deux-Sèvres, Nouvelle-Aquitaine, France

Natrodufrénite

Ste Barbe vein, Montmins mining district, Échassières, Vichy, Allier, Auvergne-Rhône-Alpes, France

Natrodufrénite

Fragas da Carvalhosa Mine, Felgar e Souto da Velha, Torre de Moncorvo, Bragança, Portugal

Dufrénite

Bel Air Mine, La Chapelle-Largeau, Mauléon, Bressuire, Deux-Sèvres, Nouvelle-Aquitaine, France

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About Dufrénite GroupHide

This page provides mineralogical data about Dufrénite Group.

Name EncodingHide

ASCII-7:

Dufrenite Group

Unique IdentifiersHide

Mindat ID:

39303

Long-form identifier:

mindat:1:1:39303:0

Chemical AnalysisHide

Oxide wt%:

	1
P₂O₅	37.65 %
Al₂O₃	34.35 %
Fe₂O₃	1.14 %
FeO	6.26 %
MgO	2.00 %
MnO	0.40 %
CaO	1.88 %
Na₂O	2.93 %
H₂O+	11.60 %
Insol	2.06 %
Total:	100.27 %

Empirical formulas:

Sample ID	Empirical Formula
2	(Na_0.81Ca_0.19)_Σ1.00(Mg_0.75Mn²⁺_0.19Fe²⁺_0.05)_Σ0.99(Fe³⁺_4.99Al_0.01)_Σ5.00(PO₄)_3.97(OH)_5.88 · 2_.05H₂O

Sample references:

ID	Locality	Reference	Notes
1	Buranga pegmatite, Muhororo, Ngororero District, Western Province, Rwanda	von Knorring, O., Lehtinen, M., Sahama, Th.G. (1977) Burangaite, a new phosphate mineral from Rwanda. Bulletin of the Geological Society of Finland, 49 (1). 33-36 doi:10.17741/bgsf/49.1.006
2	White Rock No. 2 pegmatite, White Rock Feldspar Mine, Old Boolcoomata Station, Bimbowrie Conservation Park, Pastoral Unincorporated Area, South Australia, Australia	Elliott, Peter, Kampf, Anthony R. (2024) Bimbowrieite, NaMgFe³⁺₅(PO₄)₄(OH)₆⋅2H₂O, a new dufrénite-group mineral from the White Rock No.2 quarry, South Australia, Australia. Mineralogical Magazine, 88 (1). 90-96 doi:10.1180/mgm.2023.86	empirical formula basis: 24 oxygen atoms pfu

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)
0005031	Gayite	Kampf A R, Colombo F, Gonzalez del Tanago J (2010) Gayite, a new dufrenite-group mineral from the Gigante granitic pegmatite, Cordoba province, Argentina Cordoba province, Argentina American Mineralogist 95 386-391	2010	Gigante granitic pegmatite, Punilla department,	293
0004259	Matioliite	Atencio D, Coutinho J M V, Mascarenhas Y P, Ellena J A (2006) Matioliite, the Mg-analogue of burangaite, from Gentil mine, Mendes Pimentel, Minas Gerais, Brazil, and other occurrences American Mineralogist 91 1932-1936	2006	Gentil mine, Mendes Pimentel, Minas Gerais, Brazil	293
0005534	Burangaite	Selway J B, Cooper M A, Hawthorne F C (1997) Refinement of the crystal structure of burangaite The Canadian Mineralogist 35 1515-1522	1997		293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Gayite'
loop_
_publ_author_name
'Kampf A R'
'Colombo F'
'Gonzalez del Tanago J'
_journal_name_full 'American Mineralogist'
_journal_volume 95 
_journal_year 2010
_journal_page_first 386
_journal_page_last 391
_publ_section_title
;
 Gayite, a new dufrenite-group mineral from the Gigante granitic pegmatite,
 Cordoba province, Argentina
 Cordoba province, Argentina
;
_database_code_amcsd 0005031
_chemical_compound_source 'Gigante granitic pegmatite, Punilla department,'
_chemical_formula_sum 'Na Fe4.06 Al1.01 Mn.93 P4 O24 H10'
_cell_length_a 25.975
_cell_length_b 5.1766
_cell_length_c 13.929
_cell_angle_alpha 90
_cell_angle_beta 111.293
_cell_angle_gamma 90
_cell_volume 1745.070
_exptl_crystal_density_diffrn      3.220
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-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
Na   0.00000  -0.17040   0.25000   1.00000   0.03400
Fe1   0.00000   0.00000   0.00000   0.73000   0.02900
Al1   0.00000   0.00000   0.00000   0.27000   0.02900
Mn2   0.25000   0.25000   0.00000   0.93000   0.02800
Fe2   0.25000   0.25000   0.00000   0.07000   0.02800
Fe3   0.15310  -0.01990   0.10950   0.76000   0.02600
Al3   0.15310  -0.01990   0.10950   0.24000   0.02600
Fe4   0.13970  -0.22860   0.34950   0.87000   0.02700
Al4   0.13970  -0.22860   0.34950   0.13000   0.02700
P1   0.21650   0.26140   0.33090   1.00000   0.03000
P2   0.07850   0.27070   0.39180   1.00000   0.03400
O1   0.08790   0.05480   0.32390   1.00000   0.03800
O2   0.07750   0.53170   0.33910   1.00000   0.03600
O3   0.02270   0.22780   0.40240   1.00000   0.04000
O4   0.12410   0.27200   0.49860   1.00000   0.03600
O-H5   0.16870   0.22850   0.01050   1.00000   0.03600
O6   0.20740   0.01080   0.38220   1.00000   0.03600
O7   0.19870  -0.51110   0.38210   1.00000   0.03100
O-H8   0.12850  -0.26710   0.20100   1.00000   0.03600
O9   0.17770   0.25480   0.21880   1.00000   0.03600
O10   0.22410  -0.21250   0.15570   1.00000   0.03400
O-H11   0.07530   0.13300   0.06760   1.00000   0.03800
Wat12   0.02320  -0.28970   0.10750   1.00000   0.03600
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
Na 0.02800 0.04600 0.02400 0.00000 0.00700 0.00000
Fe1 0.03200 0.03000 0.02100 -0.00100 0.00800 0.00000
Al1 0.03200 0.03000 0.02100 -0.00100 0.00800 0.00000
Mn2 0.02800 0.02500 0.02200 -0.00200 0.00100 -0.00300
Fe2 0.02800 0.02500 0.02200 -0.00200 0.00100 -0.00300
Fe3 0.03000 0.02700 0.01900 0.00100 0.00500 -0.00100
Al3 0.03000 0.02700 0.01900 0.00100 0.00500 -0.00100
Fe4 0.03300 0.02500 0.02000 0.00000 0.00600 0.00100
Al4 0.03300 0.02500 0.02000 0.00000 0.00600 0.00100
P1 0.03800 0.02300 0.02700 0.00200 0.00900 0.00000
P2 0.03700 0.03400 0.02800 0.00200 0.01000 0.00200
O1 0.06000 0.02500 0.02600 0.01000 0.01400 -0.00500
O2 0.05000 0.03200 0.02200 0.00000 0.00900 0.01400
O3 0.03600 0.04400 0.03300 0.00800 0.00300 0.00300
O4 0.02500 0.04500 0.03000 0.00300 0.00100 0.00200
O-H5 0.04500 0.03400 0.02200 0.00800 0.00300 0.00000
O6 0.03500 0.04000 0.02800 -0.00200 0.00600 -0.00500
O7 0.04300 0.02700 0.02100 -0.00400 0.01000 -0.00200
O-H8 0.04300 0.04500 0.01800 -0.00200 0.01100 0.00700
O9 0.04100 0.03700 0.02400 0.00500 0.00600 -0.00800
O10 0.02500 0.04000 0.03600 0.00600 0.00900 0.00300
O-H11 0.03300 0.04100 0.03600 0.00400 0.00700 0.00400
Wat12 0.04800 0.03700 0.02500 -0.00400 0.01400 0.00800

Relationship of Dufrénite Group to other SpeciesHide

Dufrénite Group Members:

Bimbowrieite	NaMgFe³⁺₅(PO₄)₄(OH)₆ · 2H₂O	Mon. 2/m : B2/b
Burangaite	NaFe²⁺Al₅(PO₄)₄(OH)₆ · 2H₂O	Mon. 2/m : B2/b
Dufrénite	Ca_0.5Fe²⁺Fe³⁺₅(PO₄)₄(OH)₆ · 2H₂O	Mon. 2/m : B2/b
Gayite	NaMn²⁺Fe³⁺₅(PO₄)₄(OH)₆ · 2H₂O	Mon. 2/m : B2/b
Matioliite	NaMgAl₅(PO₄)₄(OH)₆ · 2H₂O	Mon. 2/m : B2/b
Natrodufrénite	NaFe³⁺Fe³⁺₅(PO₄)₄O(OH)₅(H₂O)₂	Mon. 2/m : B2/b

Click on any node to view relationships. Formula-derived relationship network for the group members above. Use Find related species to add formula-neighbour species outside the current group view. Solid links show inferred chemical differences; dashed violet links show same-formula crystallographic differences. Hydration states are not treated as relationship changes. These relationships do not imply any real-world substitution reactions between these species.

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 Dufrénite GroupHide

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References for Dufrénite GroupHide

Reference List:

Localities for Dufrénite GroupHide

Showing 253 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
Córdoba Province Cruz del Eje department Candelaria District ⓘ Gigante pegmatite	[Gayite, Natrodufrénite] Kampf et al. (2010)
Punilla Department San Roque District Tanti ⓘ Cerro Blanco pegmatite district	[Dufrénite] Dina (1993)
ⓘ El Criollo Mine	[Dufrénite] Demartin et al. (1997)
San Alberto Department Tránsito District Pampa de Achala ⓘ La Victoria pegmatite	[Dufrénite] Gay et al. (1991) +1 other reference
San Luis Province Coronel Pringles Department El Trapiche La Florida ⓘ San Luis Mine	[Dufrénite] OYARZABAL et al. (H2O) +2 other references
San Martín Department ⓘ Cema pegmatite	[Dufrénite] Roda-Robles et al. (2012)

Australia
New South Wales Yancowinna Co. Broken Hill district Broken Hill ⓘ Block 14 opencut	[Dufrénite] Birch et al. (1997)
Broken Hill South Mine (BHS Mine; South Mine) ⓘ Kintore opencut	[Dufrénite, Natrodufrénite] Birch et al. (1997)
ⓘ ~~Pinnacles Mine~~	[Dufrénite, Natrodufrénite] Day (1998)
Thackaringa District ⓘ Lady Beryl Mine	[Dufrénite] Johnson (1956)
Northern Territory Victoria-Daly Region Pine Creek ⓘ Evelyn Mine ?	[Dufrénite] Stuart Mills
Queensland City of Mount Isa Gunpowder District Mount Gordon ⓘ Mount Oxide Copper mine	[Natrodufrénite] Day et al. (1996)
Cloncurry Shire Cloncurry ⓘ Milo Mine	[Dufrénite, Natrodufrénite] Derrick +1 other reference
South Australia Barossa Council Penrice ⓘ Moculta Phosphate Quarry	[Dufrénite, Natrodufrénite] Harrowfield et al. (1981)
District Council of Mount Remarkable Wilmington ⓘ Spring Creek Mine	[Dufrénite] Kolitsch et al. (1999)
Eyre peninsula Middleback Range Iron Duke Complex ⓘ Iron Duchess	[Dufrénite] Francis (2010)
ⓘ Iron Knight Mine	[Dufrénite] Francis (2010)
Light Regional Council Koonunga ⓘ Tom's Quarry	[Dufrénite, Natrodufrénite] Frost et al. (2004)
St Johns ⓘ St Johns Quarry	[Natrodufrénite]
Northern Areas Council Gladstone ⓘ Hicks Quarry	[Dufrénite, Natrodufrénite] Peter Elliott
Pastoral Unincorporated Area Bimbowrie Conservation Park ⓘ Mount Bull Mine	[Natrodufrénite] - (1997, December)
Old Boolcoomata Station White Rock Feldspar Mine ⓘ White Rock No. 2 pegmatite	[Bimbowrieite, Dufrénite, Natrodufrénite] Elliott et al. (2025)
Boolcoomatta Reserve (Boolcoomata Station) ⓘ Wiperaminga Hill West Quarry	[Natrodufrénite] ID by Peter Elliott - South Australia ...
Iron Knob ⓘ Iron Monarch Main Pit	[Dufrénite]
Middleback Range Iron Duke Complex ⓘ Iron Duke Mine	[Dufrénite] Francis (2010)
Outalpa Ameroo Hill ⓘ Perryhumuck Mine (Perry Hummock Mine)	[Natrodufrénite] - (1997, December)
Robertstown ⓘ Fairview Quarry	[Dufrénite, Natrodufrénite] Noble et al. (1983)
Victoria City of Greater Shepparton Dookie Ascot Hills ⓘ Gravel Hill quarry	[Natrodufrénite]
Mount Alexander Shire Castlemaine Campbells Creek ⓘ Rixon Sandstone Quarries	[Natrodufrénite] P. Sutton (2007)
Rural City of Wangaratta Whitfield ⓘ Edi-Cheshunt turquoise field ?	[Dufrénite] Birch et al. (1993)
Swan Hill Rural City Lake Boga ⓘ Lake Boga granite quarry	[Natrodufrénite] Birch (1996)
Western Australia Dandaragan Shire Dandaragan ⓘ Hole-in-the-wall phosphate deposit	[Dufrénite] Sue Koepke collection
ⓘ Minyulo Well	[Dufrénite] Collection of NHM
Gingin Shire ⓘ ~~Gingin (Molecap Hill; Poison Hill; MacInytre Gully)~~	[Dufrénite] Simpson (1920)
Meekatharra Shire Milgun Station ⓘ Mount Deverell variscite deposit	[Dufrénite] Peter Downes
Port Hedland Shire Strelley Station ⓘ Strelley pegmatite	[Dufrénite] Jacobson et al. (2007)

Austria
Carinthia Spittal an der Drau District Millstatt lake ⓘ Hochgosch	[Burangaite, Matioliite] Niedermayr et al. (2001)
ⓘ Laggerhof	[Burangaite] Brandstätter et al. (2000)
Lower Austria Gmünd District Großdietmanns Unterlembach ⓘ Eichberg	[Natrodufrénite] Brandstätter et al. (1990) +1 other reference

Brazil
Minas Gerais Conselheiro Pena Barra do Cuieté ⓘ Eduardo claim	[Natrodufrénite] Sergio Varvello collection
Ferruginha ⓘ Sapo Mine	[Dufrénite] Sergio Varvello collection
Divino das Laranjeiras Linópolis ⓘ Córrego Frio mine	[Dufrénite] Cassedanne (1983) +1 other reference
Galiléia Sapucaia do Norte ⓘ Sapucaia mine	[Dufrénite, Gayite, Natrodufrénite] Cassedanne et al. (1999)
Mendes Pimentel ⓘ Gentil claim	[Matioliite] Am.Min 91 (2006) +1 other reference
Paraíba Picuí ⓘ Alto Lagoa do André	[Dufrénite] Sergio Varvello collection

Canada
Ontario Hastings County Madoc Township ⓘ Eldorado Copper Mine (Coe Iron mine; Moore Iron mine)	[Dufrénite] Ontario Mineral deposit Inventory ...
Yukon Dawson mining district ⓘ Rapid Creek	[Matioliite] XRD and EDS analyses by Dr Anthony Kampf +1 other reference

Chile
Antofagasta Antofagasta Province Mejillones Mejillones peninsula ⓘ Unnamed Cu mine [4]	[Natrodufrénite] XRD by Gerhard Möhn
El Loa Province Calama Chuquicamata District ⓘ Chuquicamata Mine	[Natrodufrénite] maurizio dini collection - analysed ...
Atacama Chañaral Province Diego de Almagro El Salvador mining district ⓘ El Salvador Mine	[Natrodufrénite] Codelco
Tarapacá Tamarugal Province Pica Collahuasi mining district ⓘ Quebrada Blanca Mine	[Natrodufrénite] Teck Resources Limited

Czech Republic
Central Bohemian Region Beroun District Zaječov Svatá Dobrotivá (St Benigna) ⓘ Hrbek Mine	[Dufrénite] A. Tomwek
Kutná Hora District Vlkaneč ⓘ Přibyslavice	[Dufrénite] Povondra et al. (eds.) +1 other reference
Karlovy Vary Region Cheb District Lázně Kynžvart ⓘ Bílý Kámen pegmatite quarry	[Dufrénite] Černý et al. (Weisser Stein)
Sokolov District Krásno ⓘ Huber stock (Huber shaft; Hub stock)	[Natrodufrénite] Sejkora et al. (2006)
ⓘ Stannum mine (New Hubner shaft)	[Natrodufrénite] Sejkora et al. (2006)
Vysoký Kámen ⓘ Greisen deposit	[Natrodufrénite] Sejkora et al. (2007)
Liberec Region Semily District ⓘ Poniklá	[Dufrénite, Natrodufrénite] Škoda
Pardubice Region Pardubice District ⓘ Chvaletice	[Dufrénite] Prachař +6 other references
Plzeň Region Domažlice District ⓘ St Vavřinec hill	[Dufrénite] Weber
Rokycany District Těškov ⓘ Těškov quarry (Lom Knezska hora)	[Dufrénite] Janouš (1995) +4 other references
Slavonice Vlastkovec ⓘ Stříbrný Hill	[Natrodufrénite] Vrtiška et al. (with English summary)
South Bohemian Region Písek District Čížová ⓘ Phosphate occurrence	[Natrodufrénite] Sejkora et al. (2011)
Vysočina Region Jihlava District Kamenice Řehořov ⓘ Řehořov graphitic rock occurrence	[Dufrénite] Gramblička (n.d.) +1 other reference
Pelhřimov District Křeč ⓘ Na Zoubku phosphate occurrence	[Natrodufrénite] Vrtiška et al. (2017)
Žďár nad Sázavou District Bory Horní Bory Cyrilov (Cyrillhof) ⓘ Cyrilov phosphate pegmatite (Cyrillhof)	[Gayite, Natrodufrénite] Škoda et al. (2007) +1 other reference

Europe
ⓘ Albera Massif	[Dufrénite] Berbain et al. (2012)

France
Auvergne-Rhône-Alpes Allier Vichy Échassières Montmins mining district ⓘ L'Eperon-West mine (Travaux Marion)	[Dufrénite, Natrodufrénite] Yannick Vessely collection - SEM-EDS ...
Le Mazet ⓘ Le Mazet vein no. 1	[Dufrénite, Natrodufrénite] Pierre Le Roch & Jean-Marc Johannet ...
ⓘ Ste Barbe vein (Les Montmins)	[Dufrénite, Natrodufrénite] Walenta et al. (1980) +1 other reference
Brittany Finistère Quimper Scaër ⓘ Kervalaün	[Dufrénite] Chauris (2014)
Morbihan Pontivy Plumelin ⓘ La Lande quarry	[Dufrénite, Natrodufrénite] Pierre Le Roch & Jean-Marc Johannet ...
Vannes Rochefort-en-Terre ⓘ Pluherlin Castle	[Natrodufrénite] Bull.Mineral. (1982)
Nouvelle-Aquitaine Creuse Aubusson Soumans Montebras ⓘ Montebras Mines ?	[Dufrénite] Patureau et al. (2011)
Deux-Sèvres Bressuire Mauléon La Chapelle-Largeau ⓘ Bel Air Mine	[Dufrénite] Johannet (2006)
Le Temple ⓘ La Commanderie mine	[Dufrénite, Natrodufrénite] Jean-Marc Johannet collection (unpublished SEM-EDS analyses by Vincent Bourgouin)
Haute-Vienne Bellac Bessines-sur-Gartempe ⓘ Avent quarry	[Dufrénite] perso.wanadoo.fr (2004)
Compreignac ⓘ Angelard	[Dufrénite] Brongniart A: Tab. Espèces Min. (1833)
Razès Chanteloube Vilatte Quarries (La Vilate) ⓘ Vilatte-Haute Quarry (Alluaud Quarry)	[Dufrénite] Boisson (1988) +1 other reference
ⓘ Le Malabard Quarry	[Dufrénite] Guide geologique de la Haute Vienne
Limoges Saint-Sylvestre ⓘ Les Hureaux	[Dufrénite] perso.wanadoo.fr (2005)
Occitanie Aveyron Villefranche-de-Rouergue La Capelle-Bleys ⓘ Puech de Leguo quarry	[Natrodufrénite] Gayraud et al. (2011) +1 other reference
Pyrénées-Orientales Céret Collioure ⓘ Pegmatite field	[Dufrénite] Berbain et al. (2012)

Germany
Baden-Württemberg Freiburg Region Ortenaukreis Oberwolfach ⓘ Clara Mine	[Dufrénite, Natrodufrénite] Walenta (1992)
Bavaria Lower Bavaria Regen District Zwiesel Rabenstein ⓘ Hühnerkobel Mine (Hennenkobel Mine)	[Dufrénite] Palache et al. (1951) +2 other references
Upper Franconia Wunsiedel im Fichtelgebirge Tröstauer Forst-West ⓘ Fuchsbau quarry	[Dufrénite] www.mineralienatlas.de (n.d.)
Upper Palatinate Amberg-Sulzbach District Auerbach in der Oberpfalz ⓘ Leonie Mine	[Dufrénite] 42. (in German) +2 other references
Nitzlbuch (Nitzelbuch) ⓘ Maffei Mine (Nitzelbuch Mine)	[Dufrénite] Dana 7:II:772
Neustadt an der Waldnaab District Pleystein ⓘ Kreuzberg (Rose quartz cliff)	[Dufrénite] Dill et al. (2009)
ⓘ Miesbrunn pegmatite–aplite swarm	[Natrodufrénite] Dill et al. (2012)
Waidhaus Hagendorf ⓘ Hagendorf South Pegmatite	[Dufrénite] web.archive.org (2001)
Tirschenreuth District Bärnau ⓘ Ahornberg	[Dufrénite] Laubmann et al. (1915)
Tirschenreuth ⓘ Großklenau	[Dufrénite] Meier (2005)
Hesse Darmstadt Rheingau-Taunus-Kreis Waldems Steinfischbach ⓘ Glückstein mine	[Dufrénite] www.mineralienatlas.de (n.d.)
Giessen Region Lahn-Dill-Kreis Lahnau Waldgirmes ⓘ Rotläufchen Mine	[Dufrénite, Natrodufrénite] Dana 6: 797 +1 other reference
Limburg-Weilburg Weinbach ⓘ Mark Mine	[Dufrénite, Natrodufrénite] Blaß (2002)
North Rhine-Westphalia Arnsberg Siegen-Wittgenstein Siegen Eiserfeld ⓘ Eisenzecher Zug mine	[Dufrénite] Wittern (2001)
Soest Warstein ⓘ David Mine (Christiansglück Mine)	[Dufrénite] Stieglitz et al. (1987) +1 other reference
Rhineland-Palatinate Altenkirchen Altenkirchen-Flammersfeld Bürdenbach ⓘ Louise Mine	[Dufrénite] Weiß (1990)
Daaden-Herdorf Herdorf Dermbach ⓘ Althollert Mine (Regulatus adit)	[Dufrénite, Natrodufrénite] Hucko (2010)
ⓘ Hollertszug Mine (Hollerter Zug Mine)	[Dufrénite] Weiß (1990) +1 other reference
Kirchen (Sieg) Brachbach ⓘ Wernsberger Erbstollen Mine (Wernsberg Mine)	[Dufrénite] Hucko (2010)
Bernkastel-Wittlich Bernkastel-Kues Hochscheid ⓘ Adolphine Mine	[Dufrénite] Marcus Voigt Collection
Neuwied Unkel Rheinbreitbach ⓘ Virneberg Mine	[Dufrénite] Weiß (1990)
Westerwaldkreis Wirges Dernbach ⓘ Schöne Aussicht Mine	[Natrodufrénite] SEM-EDS
Saxony-Anhalt Harz Blankenburg Hüttenrode ⓘ Braunesumpf Mine	[Dufrénite] Schaarschmidt (2014)
Saxony Erzgebirgskreis Ehrenfriedersdorf ⓘ Greifensteine	[Natrodufrénite] Wittern (2001)
Görlitz District Kodersdorf Rengersdorf ⓘ Hochstraße fields	[Dufrénite] Witzke et al. (1993)
Vogtlandkreis Heinsdorfergrund Hauptmannsgrün ⓘ Isolde Mine	[Dufrénite] U. Ludwig
ⓘ Thekla Mine	[Dufrénite] Pestel et al. (2012)
Thuringia Saale-Orla District Bad Lobenstein ⓘ Tännig	[Dufrénite] Wittern (2001)
Hirschberg Ullersreuth ⓘ Arme Hilfe Mine	[Dufrénite] Witzke et al. (2001)
ⓘ Hoff auf mich Mine	[Dufrénite] Witzke et al. (2001)

Greece
Attica East Attica Lavreotiki Agios Konstantinos (Kamariza) ⓘ Kamariza mines (Kamareza mines)	[Dufrénite]
ⓘ ~~Lavrion Mining District~~	[Dufrénite] Kolitsch et al. (2014) +1 other reference
Lophos Agrileza mines ⓘ Mine No. 6	[Dufrénite] Rieck et al. (2020)

Hungary
Borsod-Abaúj-Zemplén County Miskolc District Bükkszentkereszt ⓘ Bagoly Hill	[Natrodufrénite] collector: Regina Körmendy
Heves County Gyöngyös District Gyöngyössolymos ⓘ Szén-patak Cseternás-bérc	[Dufrénite] Körmendy Regina (2011)

Italy
Liguria Savona Province Bergeggi ⓘ Vallone Rio Sant'Elena	[Natrodufrénite] collected by F. Castellaro and probed ...
ⓘ Vado Ligure	[Natrodufrénite] Bruno Marello collection
ⓘ Cava del Faro	[Natrodufrénite] Marco Ciriotti 2010
ⓘ Rio San Nicolò	[Natrodufrénite] Gianluca Armellino et al. (2024) +1 other reference
Sardinia South Sardinia Province Domusnovas ⓘ Sa Duchessa Mine	[Dufrénite] Stara P. (1996)
Fluminimaggiore ⓘ Tiny-Arenas Mine	[Dufrénite] Fadda (1989)

Japan
Ibaraki Prefecture Kasumigaura City Chiyoda-machi ⓘ Yukiiri	[Dufrénite] Matsubara et al. (1980)

Madagascar
Amoron'i Mania Ambatofinandrahana District Mandrosonoro ⓘ Marivolanitra pegmatite	[Dufrénite] Behier (1960)

Mexico
Durango Indé Municipality ⓘ Navidad Mine	[Dufrénite] Michael Shannon specimens

Morocco
Drâa-Tafilalet Region Ouarzazate Province Amerzgane Cercle Ouisselsate Caïdat ⓘ Angarf-South pegmatite	[Dufrénite, Natrodufrénite] GAUDEFROY (1955)
Marrakesh-Safi Region Rehamna Province Sidi Bou Othmane Cercle Jebilet Mountain (Djebilet Mountain) ⓘ Sidi Bou Othmane	[Dufrénite] Fontan (1978)

Namibia
Erongo Region Dâures Constituency ⓘ Sandamap North Farm 115	[Dufrénite] von Bezing (2007)
ⓘ Sandamap pegmatite	[Dufrénite] Keller (1985)
Karibib Constituency Okatjimukuju Farm 55 (Friedrichsfelde Farm) ⓘ Clementine II pegmatite	[Dufrénite] Keller et al. (1989)
Oshikoto Region Tsumeb ⓘ Tsumeb Mine (Ongopolo Mine)	[Dufrénite]

Poland
Lower Silesian Voivodeship Świdnica County Gmina Świdnica ⓘ Lutomia Górna	[Dufrénite] Włodek et al. (2015)
Michałkowa pegmatites ⓘ Góry Sowie Block	[Dufrénite] Pieczka et al. (2015)

Portugal
Braga Braga Mire de Tibães ⓘ Tibães Mine	[Dufrénite] Nunes (n.d.)
Bragança Torre de Moncorvo Felgar e Souto da Velha ⓘ Fragas da Carvalhosa Mine	[Natrodufrénite] Alves (n.d.)
ⓘ Chãs Mines	[Dufrénite] Pedro Alves collection and/or ...
Guarda Gouveia Folgosinho ⓘ Sítio do Castelo Mine	[Dufrénite] Alves (2016)
Viana do Castelo Ponte de Lima Cabração e Moreira do Lima ⓘ Monteiro Mine	[Dufrénite] Alves (n.d.)
Viana do Castelo ⓘ Nogueira， Meixedo e Vilar de Murteda	[Dufrénite] 4 +4 other references
Vila Real ⓘ Barroso-Alvão pegmatite field	[Dufrénite] Martins et al. (2011)
Viseu Mangualde Mangualde (Mesquitela e Cunha Alta) ⓘ Cubos-Mesquitela-Mangualde area	[Dufrénite] Rewitzer et al. (1984) +1 other reference
São Pedro do Sul Manhouce ⓘ Padrão Mine	[Dufrénite] Alves (n.d.)
Sátão Ferreira de Aves Aldeia Nova ⓘ Assunção Mine	[Gayite] Alves (n.d.)
Vila Nova de Paiva ⓘ Lagares Mining Field	[Natrodufrénite] Identified in Rebentão Mine
Queiriga Lagares do Estanho Mines ⓘ Rebentão Mine	[Natrodufrénite] Nuno Afonso collection

Romania
Brașov County ⓘ Racoş (Racoşul de Jos)	[Dufrénite] Szakáll
ⓘ Carhaga Valley	[Dufrénite] Szakáll et al. (2010)
Harghita County Sântimbru ⓘ Sântimbru-Băi	[Dufrénite] Szakáll et al. (2010)

Rwanda
Southern Province Muhanga District Nyamabuye Muhanga ⓘ Warusenge	[Dufrénite] Royal Museum for Central Africa
Western Province Ngororero District Muhororo ⓘ Buranga pegmatite	[Burangaite, Dufrénite] von Knorring et al. (1977) +2 other references

South Africa
Northern Cape Namakwa District Municipality Khâi-Ma Local Municipality ⓘ Aggeneys	[Dufrénite] Cairncross et al. (1995)
Western Cape City of Cape Town Metropolitan Municipality Hout Bay ⓘ Manganese Mines	[Dufrénite] Cairncross et al. (1995)

Spain
Castile-La Mancha Ciudad Real Almodóvar del Campo ⓘ Minas del Horcajo	[Dufrénite, Natrodufrénite] Sáinz de Baranda et al. (2004)
ⓘ AVE tunnel works	[Dufrénite, Natrodufrénite] www.foro-minerales.com (2022) +1 other reference
Castile and Leon Salamanca Barruecopardo ⓘ Barruecopardo Mine	[Natrodufrénite] Christian Rewitzer collection
Garcirrey ⓘ Julita quarry (Cañada pegmatite)	[Gayite] Calvo Rebollar et al. (2022)
Golpejas Golpejas Mining group ⓘ Tita Mine	[Dufrénite] Calvo Rebollar (2015)
Zamora Villar del Buey ⓘ Pinilla de Fermoselle	[Natrodufrénite] Roda-Robles et al. (1998)
ⓘ Teso de la Calera pegmatite (Pinilla de Fermoselle pegmatite; Pinilla pegmatite)	[Natrodufrénite]
Catalonia Barcelona Baix Llobregat ⓘ Gavà	[Dufrénite] Camprubí et al. (Catalunya)
Bruguers ⓘ ~~Elvira Mine~~	[Dufrénite] Tritlla (1987)
Extremadura Cáceres Zarza la Mayor ⓘ La Paloma Mine	[Natrodufrénite] Calvo et al. (2011)
Galicia Pontevedra Moaña ⓘ Mount Ermelo	[Burangaite] Vérez et al. (2024)

Sweden
Norrbotten County Kiruna Kiruna Town Mining District ⓘ Kiirunavaara Mine	[Dufrénite]
Svappavaara ⓘ Leveäniemi Mine ?	[Dufrénite] Lorin (2022)
Värmland County Torsby ⓘ Hålsjöberg	[Burangaite] Ek et al. (1990) +1 other reference

UK
England Cornwall Linkinhorne Minions ⓘ Phoenix United Mine	[Dufrénite] Palache et al. (1951) +1 other reference
ⓘ Wheal Phoenix	[Dufrénite] Kinch et al. (1886) +3 other references
ⓘ South Phoenix Mine	[Dufrénite] P D Trebilcock.
Treverbyn Stenalees ⓘ Gunheath China Clay Pit	[Dufrénite] Elton et al. (1996) +2 other references
Cumbria Allerdale Caldbeck Coombe Height ⓘ Burdell Gill	[Dufrénite] Hartley (1984) +1 other reference
ⓘ Caldbeck Fells Mining Region	[Dufrénite] Stanley et al. (1991)
Devon West Devon Gulworthy ⓘ East Wheal Russell ?	[Dufrénite] Kingsbury (1957)

USA
Alabama Cherokee County ⓘ Augusta Ridge phosphate locality	[Dufrénite, Natrodufrénite] Lavinsky (n.d.)
ⓘ Indian Mountain	[Dufrénite, Natrodufrénite] Barwood et al. (1978) +1 other reference
ⓘ Highbluff Limonite Bank	[Dufrénite] Cook et al. (1982)
Rock Run Wolfden Mountain ⓘ Rock Run Phosphate occurrence	[Dufrénite] Rocks & Minerals: 70 (5) +2 other references
ⓘ Rock Run Station locality	[Dufrénite] Dean (1995)
Arizona Graham County Lone Star Mining District (Safford Mining District; Dos Pobres Mining District) Lone Star Lone Star Mountain ⓘ Lone Star Mine (Lone Star group; Lone Star deposit)	[Natrodufrénite] Grant et al. (2005)
Arkansas ⓘ Montgomery County	[Dufrénite] Howard (1987) +1 other reference
Polk County ⓘ Buckeye Mountain (Blaylock Mountain)	[Dufrénite] Smith (1988)
Shady ⓘ Coon Creek Mine	[Dufrénite] Rocks & Min.:64:297-298.
Three Oak Gap ⓘ Three Oaks Gap workings (Arena 1 prospect)	[Dufrénite] Smith (1988)
Georgia Burke County Girard Mining District ⓘ Girard	[Dufrénite] Jason Smith & M.E. Ciriotti (2005)
Polk County ⓘ Indian Mountain	[Dufrénite] Rocks & Minerals 54:4 pp161-165
Maine Oxford County Newry ⓘ Bell pit	[Dufrénite] Nichael Swanson
Paris ⓘ Ryerson Hill Quarries	[Dufrénite] SEM/EDS analyzed by Lloyd W. Alexander ... +1 other reference
Missouri Crawford County Missouri Brown Iron Belt Hinch ⓘ Scotia Iron Bed Mines	[Dufrénite] Dana 6: 1083.
Steelville ⓘ Cherry Valley Mines (Cherry Valley No.1 and 2)	[Dufrénite] Sherwood et al. (1998)
Nevada Eureka County Carlin Trend Maggie Creek Mining Subdistrict ⓘ Gold Quarry Mine	[Burangaite, Matioliite] Newmont Mining Corporation
Humboldt County Buffalo Mountain Mining District ⓘ Lone Tree Mine	[Dufrénite] Newmont Mining Corporation
ⓘ Sequoia pit	[Dufrénite] Rocks & Minerals. Nov. 1999.
Iron Point Mining District Valmy ⓘ Silver Coin Mine	[Natrodufrénite] Silver Coin Mine. Compact Disc. Paul ...
Pershing County Willard Mining District ⓘ Willard Mine	[Dufrénite] Jensen et al. (2001)
New Hampshire Grafton County Alexandria ⓘ ~~E.E. Smith Mine~~	[Dufrénite] Rocks & Min.: 17:250. +1 other reference
Groton ⓘ ~~Fletcher Mine~~	[Dufrénite] Meyers et al. (1956)
ⓘ Palermo No. 1 Mine	[Dufrénite] USGS Prof Paper 353 +3 other references
Orange ⓘ Keyes Mica Quarries ?	[Dufrénite] Thompson et al. (2022)
Hillsborough County Deering ⓘ ~~Gringrass Farm locality~~	[Dufrénite] Meyers et al. (1956) +1 other reference
New Jersey Monmouth County Holmdel ⓘ Telegraph Hill	[Dufrénite] Manchester (1931)
New Mexico Grant County Burro Mountains Mining District Tyrone Area Tyrone Mine ⓘ San Salvador Hill pit	[Dufrénite] Jerry Cone Collection
ⓘ Santa Rita Mining District	[Dufrénite] Northrop et al. (1996)
Santa Rita ⓘ Chino Mine (Santa Rita pit; Santa Rita Mine)	[Dufrénite] Mineralogical Magazine 60:787-793. +2 other references
ⓘ Steeple Rock Mining District	[Dufrénite] Northrop et al. (1996)
Sandoval County ⓘ Cochiti District	[Dufrénite] Northrop et al. (1996)
ⓘ Jemez Sulfur District	[Dufrénite] Northrop et al. (1996)
North Carolina ⓘ Chatham County	[Dufrénite] Genth et al. (1881)
Cleveland County ⓘ Dixon Creek	[Dufrénite] Wilson et al. (1978)
Kings Mountain ⓘ Foote Lithium Co. Mine	[Dufrénite] Jason Smith collection
South Dakota Custer County Custer Mining District Custer ⓘ Roosevelt group (Rough Rider)	[Dufrénite] Loomis (2011)
Fourmile ⓘ Tip Top Mine	[Dufrénite] Campbell et al. (1985)
Lawrence County Bald Mountain Mining District (Portland Mining District) ⓘ Wharf Mine	[Dufrénite] Loomis (2011)
Pennington County Hill City Mining District ⓘ Tin Queen Mine (White Blowout Mine) ?	[Dufrénite] USGS Bull 380D
Keystone Mining District Keystone ⓘ Etta Mine	[Dufrénite] Rocks & Minerals: 67 (6)
ⓘ Hugo Mine	[Dufrénite] USGS Prof Paper 297B
Tennessee Lawrence County Iron City ⓘ Van Leer Mine	[Dufrénite] Paris (2011)
Texas ⓘ Morris County	[Dufrénite] Edwin B (1938) +1 other reference
Virginia Rockbridge County Lyndhurst-Vesuvius Mining District ⓘ Dixie Mine	[Dufrénite] Watson (1907) +1 other reference
Midvale South Mountain ⓘ Midvale Mine	[Dufrénite] Rocks&Min. 47:594 (1972)
ⓘ Washington	[Dufrénite] Cannon (1975)

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