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Volborthite Group

A material that is NOT an approved mineral species

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Photos of Volborthite Group (317)

Volborthite Group Gallery Search Photos of Volborthite Group

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Martyite

Blue Cap Mine, La Sal Creek Mining District, San Juan County, Utah, USA

Martyite

Little Eva Mine, Yellow Cat Mesa, Thompsons Mining District, Grand County, Utah, USA

Martyite

Blue Cap Mine, La Sal Creek Mining District, San Juan County, Utah, USA

Martyite

Blue Cap Mine, La Sal Creek Mining District, San Juan County, Utah, USA

Martyite

Little Eva Mine, Yellow Cat Mesa, Thompsons Mining District, Grand County, Utah, USA

Martyite

Blue Cap Mine, La Sal Creek Mining District, San Juan County, Utah, USA

Martyite

Blue Cap Mine, La Sal Creek Mining District, San Juan County, Utah, USA

Martyite

Little Eva Mine, Yellow Cat Mesa, Thompsons Mining District, Grand County, Utah, USA

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About Volborthite GroupHide

A group of monoclinic or trigonal metal divanadate hydrates.

Unique IdentifiersHide

Mindat ID:

46589

Long-form identifier:

mindat:1:1:46589:6

GUID
(UUID V4):

8e7449c3-1c35-439e-9f80-e0119fb5424f

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)
0019133	Volborthite	Ishikawa H, Yamaura J, Okamoto Y, Yoshida H, Nilsen G J, Hiroi Z (2012) A novel crystal polymorph of volborthite, Cu3V2O7(OH)22H2O* Acta Crystallographica C68 i41-i44	2012	synthetic	293
0018666	Volborthite	Kashaev A A, Bakakin V V (1968) Crystal structure of volborthite Cu3(OH)2V2O72H2O* Doklady Akademii Nauk SSSR 181 967-969	1968		293
0013677	Volborthite	Lafontaine M A, LeBail A, Ferey G (1990) Copper-containing minerals - I. Cu3V2O7(OH)2,2H2O: The synthetic homolog of volborthite; crystal structure determination from X-ray and neutron data; structural correlations Journal of Solid State Chemistry 85 220-227	1990		293
0013678	Volborthite	Lafontaine M A, LeBail A, Ferey G (1990) Copper-containing minerals - I. Cu3V2O7(OH)2,2H2O: The synthetic homolog of volborthite; crystal structure determination from X-ray and neutron data; structural correlations Journal of Solid State Chemistry 85 220-227	1990		293
0018692	Volborthite	Kashaev A A, Rozhdestvenskaya I V, Bannova I I, Sapozhnikov A N, Glebova O D (2008) Balance, uniformity, and asymmetry of the structure of volborthite Cu3(OH)2(V2O7)2H2O* Journal of Structural Chemistry 49 708-711	2008	not given	293
0019037	Volborthite	Yoshida H, Yamaura J, Isobe M, Nilsen G J, Hiroi Z (2012) Orbital switching in a frustrated magnet Nature Communications 3 8601-8605	2012	synthetic	150
0019038	Volborthite	Yoshida H, Yamaura J, Isobe M, Nilsen G J, Hiroi Z (2012) T = 323 K Nature Communications 3 8601-8605	2012	synthetic	293
0018693	Volborthite	Basso R, Palenzona A, Zefiro L (1988) Crystal structure refinement of volborthite from Scrava mine (Eastern Liguria, Italy) Neues Jahrbuch fur Mineralogie, Monatshefte 1988 385-394	1988	Scrava mine, Eastern Liguria, Italy	293
0006193	Martyite	Kampf A R, Steele I M (2008) Martyite, a new mineral species related to volborthite: Description and crystal structure The Canadian Mineralogist 46 687-692	2008	Blue Cap mine, San Juan County, Utah	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Volborthite'
loop_
_publ_author_name
'Ishikawa H'
'Yamaura J'
'Okamoto Y'
'Yoshida H'
'Nilsen G J'
'Hiroi Z'
_journal_name_full 'Acta Crystallographica, Section C'
_journal_volume 68 
_journal_year 2012
_journal_page_first i41
_journal_page_last i44
_publ_section_title
;
 A novel crystal polymorph of volborthite, Cu3V2O7(OH)2*2H2O
 Note: this is a polymorph of volborthite
;
_database_code_amcsd 0019133
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Cu3 V2 O11 H6'
_cell_length_a 10.6118
_cell_length_b 5.8708
_cell_length_c 14.4181
_cell_angle_alpha 90
_cell_angle_beta 95.0290
_cell_angle_gamma 90
_cell_volume 894.786
_exptl_crystal_density_diffrn      3.523
_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_U_iso_or_equiv
Cu1   0.00000   0.00000   0.00000   0.00920
Cu21   0.25000   0.25000   0.00000   0.00895
Cu22   0.25000   0.75000   0.00000   0.00970
V  -0.00334   0.47640   0.12693   0.00689
O1   0.00000   0.45180   0.25000   0.01930
O2   0.34210   0.49870   0.05851   0.00890
H2   0.34990   0.49840   0.12670   0.01100
O4   0.15830   0.50540  -0.07583   0.01160
Wat5   0.32380   0.48420   0.23920   0.04450
O31   0.06970   0.24360   0.08605   0.01310
O32   0.07570   0.70670   0.10121   0.01400
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
Cu1 0.00760 0.00910 0.01110 -0.00098 0.00120 -0.00276
Cu21 0.00870 0.00660 0.01100 -0.00067 -0.00230 -0.00043
Cu22 0.00950 0.00670 0.01210 0.00068 -0.00370 -0.00037
V 0.00730 0.00820 0.00500 -0.00026 -0.00040 -0.00033
O1 0.02200 0.02760 0.00860 0.00000 0.00180 0.00000
O2 0.00860 0.00850 0.00950 -0.00070 0.00040 -0.00040
O4 0.01040 0.01090 0.01290 0.00020 -0.00210 -0.00010
Wat5 0.05700 0.06100 0.01480 0.00090 -0.00150 0.00090
O31 0.01180 0.01380 0.01350 0.00090 0.00020 -0.00250
O32 0.01340 0.01380 0.01420 -0.00160 -0.00150 0.00080

Relationship of Volborthite Group to other SpeciesHide

Group Members:

Karpenkoite	Co₃(V₂O₇)(OH)₂ · 2H₂O	Trig. 3m (3 2/m) : P3m1
Martyite	Zn₃(V₂O₇)(OH)₂ · 2H₂O	Trig. 3m : P3m1
Volborthite	Cu₃(V₂O₇)(OH)₂ · 2H₂O	Mon. 2/m : B2/m

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 Volborthite GroupHide

mindat.org URL:

https://www.mindat.org/min-46589.html
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References for Volborthite GroupHide

Reference List:

Localities for Volborthite GroupHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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
Neuquén Province Añelo Department Los Chihuidos ⓘ Los Chihuidos-Las Cárceles mining district	[Volborthite] Friz, C. T., Rodrigo, F. y Stipanicic, P. N. Recursos y posibilidades uraníferas en Argentina. Comisión Nacional de Enrgía Atómica. Session 2.11, pp. 42 - 54. Buenos Aires, Argentina.
Confluencia department Plaza Huincul ⓘ Barda González prospect	[Volborthite] PONS, Josefina M. et al. Alteration, Cu mineralization and bitumen in the Barda González prospect, Neuquén. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 501-513.

Australia
South Australia Flinders Ranges North Flinders Ranges Arkaroola Region (Arkaroola Wilderness Sanctuary; Arkaroola Station) Yudnamutana District ⓘ Daly Mine	[Volborthite] *Noble, R. J., Just, J., Johnson, J. E. (1983) Catalogue of South Australian Minerals: 1983. Handbook* 7. Department of Mines and Energy, South Australia**
ⓘ Jubilee Silver Mine	[Volborthite]
Leigh Creek Copley ⓘ Mountain of Light Mine	[Volborthite]
Mount Coffin ⓘ Diamond Jubilee Mine	[Volborthite] Ben Grguric collection
Mount Lyndhurst station ⓘ Avondale Mine	[Volborthite] Noble, RJ & Just, J, 1983 , Catalogue of South Australian minerals : 1983 , Dept. of Mines and Energy, South Australia, Adelaide.
ⓘ Great Mount Lyndhurst Mine	[Volborthite] No reference listed
ⓘ Mount Burr Mine	[Volborthite]
Nichol Nob ⓘ Paulls Consolidated Mine (Friend Copper; Pauls)	[Volborthite] Noble R.J., Just J. and Johnson J. E., 1983, Catalogue of South Australian Minerals-1983, Government Printer, Adelaide. Brown, H.Y.L., (1908), Record of The Mines of South Australia , 4th ed., Government Printer, Adelaide.
ⓘ Paulls North Mine	[Volborthite] Ben Grguric
ⓘ White Lead Mine	[Volborthite] Zahn Gotch collection
South Flinders Ranges Wilmington ⓘ Spring Creek Mine	[Volborthite] Australian Journal of Mineralogy. Vol 5. No. 2. 1999. 55-62
Ironstone Lagoon ⓘ Sweet Nell (Ironstone Lagoon)	[Volborthite] Personal Collection of Mark Willoughby
Mt Lofty Ranges North Mt Lofty Ranges Burra ⓘ Edelweiss Mine	[Volborthite] No reference listed

Austria
Carinthia Villach-Land District Bad Bleiberg ⓘ Diabase quarry (Jakomini quarry)	[Volborthite] Brandstätter, F., Kolitsch, U., Niedermayr, G., Prasnik, H., Seemann, R. & Walter, F. (2011): 1677) Baryt, Bornit, Brochantit, Chalkopyrit, Chalkosin, Chrysokoll, Galenit, Palygorskit, Pyrobitumen, Tetraedrit und Volborthit aus dem Steinbruch „Jakomini“, nördlich Nötsch. Pp. 142-145 in Niedermayr, G. et al. (2011): Neue Mineralfunde aus Österreich LX. Carinthia II, 201./121., 135-186.
Salzburg Zell am See District Rauris Alteck - Hoher Sonnblick area Kolm-Saigurn ⓘ Slag localities	[Volborthite] *Strasser, Albert (1989) Die Minerale Salzburgs. Albert Strasser, Salzburg.*
ⓘ Astenschmiede slag locality	[Volborthite] Niedermayr, G. & Wittern, A. (2009): Mineralreiches Österreich - Tirol, Salzburg, Vorarlberg. Bode Verlag, Haltern, 144 pp.
Styria Bruck-Mürzzuschlag District Breitenau am Hochlantsch Hochlantsch ⓘ Breitenau Mine	[Volborthite] C.Auer (2014)

Belgium
Wallonia Luxembourg Vielsalm Cahay ⓘ Thier des Carrières	[Volborthite] BLONDIEAU M., PUCCIO S., COMPERE P., HATERT F. (2017) - Données nouvelles sur quelques espèces minérales de Vielsalm et de Salmchâteau. Bulletin de la Société Royale des Sciences de Liège, Vol. 86, p. 1 - 48

Canada
British Columbia Vancouver Island Nanaimo Mining Division Menzies Bay ⓘ Chalco Mine	[Volborthite] Jambor, J. L. (1960). Vanadium-bearing interlava sediment from the Campbell River area, British Columbia (Master thesis, University of British Columbia). *Ingelson, Allen (1984) Mineral Occurrences in Western Canada. The Mineralogical Record, 15 (2) 89-94*pp.89-89
Quadra Island ⓘ Prospects near Gowland Harbour	[Volborthite] Jambor, J. L. (1960). Vanadium-bearing interlava sediment from the Campbell River area, British Columbia (Master thesis, University of British Columbia). INGELSON, A. (1984) Mineral occurrences in Western Canada. Mineralogical Record 15, 89-94.

Chile
Atacama Copiapó Province Copiapó ⓘ Encanto #1 Mine	[Volborthite] Steve Sorrell Collection
ⓘ San José Mine	[Volborthite] (n.d.)
Tierra Amarilla ⓘ La Verde Mine	[Volborthite] Sullivan, B. (1978) Letter from Europe. Mineralogical Record. 9:2, 132-134, (at p.134).

Czech Republic
Central Bohemian Region Příbram District Vrančice ⓘ Alexander Mine	[Volborthite] [Lapis 1995, 12, p.13-24]
ⓘ Pošepný vein outcrop	[Volborthite] J.Hyrsl (1992)
Hradec Králové Region Jičín District Železnice Doubravice ⓘ Doubravice quarry	[Volborthite] Pauliš, P.: Nejzajímavě jší mineralogická naleziště Č ech. Kutná Hora: Kuttna, 2000, s. 61.
Trutnov District Dolní Kalná ⓘ Copper-Vanadium-Barium occurrence	[Volborthite] Johan, Z, Povondra, P.: Vanadium- and copper-bearing dolomite nodules from Permian sediments near Horní kalná, Czechoslovakia. Neues Jahrbuch für Mineralogie – Abhandlungen, 1987, Vol. 157, Number 3, s. 245-266.
Liberec Region Semily District ⓘ Studenec	[Volborthite] No reference listed

DR Congo
Haut-Katanga Kambove Territory Shinkolobwe ⓘ Shinkolobwe Mine	[Volborthite] Mineralogical Record: 20: 287-288.
Kipushi Territory Kawama ⓘ Luiswishi Mine	[Volborthite] Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York. Deliens, M. (1996) Overzicht van de mineralogie van de koper-, kobalt- en uraniumvoorkomens in Zuid-Shaba (Zaïre). Pages 35-49 in: Schatten der Aarde. Van mineraal tot juweel. Tentoonstelling in de abdij Saint-Gérard de Brogne van 27 april tot 27 oktober 1996. Catalogus opgemaakt onder de leiding van R. Warin, AGAB en P. Van hee, MKA (in Dutch).
Lualaba Mutshatsha Kolwezi ⓘ Musonoi Mine	[Volborthite] *Wilson, Wendell E. (2018) The Musonoi mine, Kolwezi District, Lualaba Province, Democratic Republic of the Congo. The Mineralogical Record, 49 (2) 236-304*
ⓘ Mutoshi Mine	[Volborthite] Deliens, M.L. (1989) Agardite-(Y) de Mutoshi, Shaba, Zaire. Annales de la Société Géologique de Belgique, 112, 207-213. Deliens, M. (1996) Overzicht van de mineralogie van de koper-, kobalt- en uraniumvoorkomens in Zuid-Shaba (Zaïre). Pages 35-49 in: Schatten der Aarde. Van mineraal tot juweel. Tentoonstelling in de abdij Saint-Gérard de Brogne van 27 april tot 27 oktober 1996. Catalogus opgemaakt onder de leiding van R. Warin, AGAB en P. Van hee, MKA (in Dutch).

France
Auvergne-Rhône-Alpes Savoie Albertville Tignes ⓘ Le Chardonnet ?	[Volborthite] Guichon, F. (2017) Les minéraux des gypses du Chardonnet, Tignes, Savoie. Le Règne Minéral, 133, 29-39. Meisser, N. (2017) La colusite et la këstérite du Chardonnet, Tignes, Savoie. Le Règne Minéral: 133: 40-41.

Germany
Baden-Württemberg Freiburg Region Lörrach Fröhnd ⓘ Oberhepschingen	[Volborthite] Markl, G. (2017). Schwarzwald. Lagerstätten und Mineralien aus 4 Jahrhunderten. Bd.4: Südlicher Schwarzwald. Das untere und das kleine Wiesental. Ed. Krüger-Stiftung. Bode Verlag, 31020 Salzhemmendorf, 880 pp. [p. 608].
Ortenaukreis Oberwolfach ⓘ Clara Mine	[Volborthite] Kolitsch, U., Götzinger, M. (2000) Einige Neufunde aus der Grube Clara im mittleren Schwarzwald: Eulytin, Namibit, Volborthit, Gearksutit, Spertiniit, Monazit-(La), Protasit, Sainfeldit, Cyanotrichit und Vauquelinit. Der Erzgräber, 14 (2) 33-47
Lower Saxony Göttingen District Bad Lauterberg ⓘ Frische Lutter vein (incl. Lutter adit; South Rothäuser adit; North Rothäuser adit)	[Volborthite] J. Gröbner: Neufunde aus den Bergbaurevieren St. Andreasberg, Bad Lauterberg und von Oberschulenberg im Harz, MINERALIEN-WELT 18 (2007), 43-51.
Harz (Landkreis Göttingen) ⓘ Wolkenhügel Mine	[Volborthite] *Wittern, Artur (2001) Mineralfundorte und ihre Minerale in Deutschland* (1st ed.) Schweizerbart, Stuttgart.**
Rhineland-Palatinate Birkenfeld Baumholder ⓘ Reichenbach	[Volborthite] Rahm, B. (2014). Algodonit: Neufund eines seltenen Kupferarsenides. Aufschluss, 65, 73-77 (in German).
ⓘ Prehnite occurrence	[Volborthite] www.mineralienfreunde-der-pfalz.de (n.d.) http://www.mineralienfreunde-der-pfalz.de/index.php?option=com_content&view=article&id=1637&Itemid=219
Mayen-Koblenz Maifeld Ochtendung ⓘ Wannenköpfe Quarry	[Volborthite] Blass, G., Graf , HW., Die Wannenköpfe bei Ochtendung in der Vulkaneifel und ihre Mineralien, MW 6/1999
Mendig Bell ⓘ Rothenberg Quarry	[Volborthite] *Hentschel, Gerhard (1987) Die Mineralien der Eifelvulkane* (2nd ed.) Christian Weise Verlag, Munich.**
Pellenz Kruft ⓘ Tönchesberg	[Volborthite] Leu, K. (2017): Unbekannte Fundstellen in der Eifel - der Tönchesberg bei Kruft, Mineralienwelt Vol. 28, 6, pp. 24-38
Nickenich ⓘ Nickenicher Sattel	[Volborthite] *Hentschel, Gerhard (1983) Die Mineralien der Eifelvulkane* (1st ed.) Christian Weise Verlag, Munich.**
ⓘ Nickenicher Weinberg	[Volborthite] *Hentschel, Gerhard (1983) Die Mineralien der Eifelvulkane* (1st ed.) Christian Weise Verlag, Munich.**
Vordereifel Ettringen ⓘ Caspar quarry	[Volborthite] Lapis, 15 (5), 9-36.
Neuwied Linz am Rhein Kasbach-Ohlenberg ⓘ Erl	[Volborthite] Markl, G. (1990) Ehl bei Linz am Rhein: Wiederentdeckung eiener vorschollenen klassischen Fundstelle. Lapis 15 (10): 25-28
Vulkaneifel Daun Daun Neunkirchen ⓘ Nerother Kopf	[Volborthite] www.mineralienatlas.de (n.d.) http://www.mineralienatlas.de/lexikon/index.php/MediaDataShow?backlink=1&lokationid=469&galerie=mineral
Oberstadtfeld ⓘ Kahlenberg	[Volborthite] *Blass, G., Graf, H.W. (1996) Neue mineralogische Erkenntnisse und neue Funde aus Eifel, Schwarzwald und Siegerland. Mineralien Welt, 7 (2) 55-64*
Strohn ⓘ Wartgesberg	[Volborthite] Jürgen Greiner collection (EDS-analysed by U. Kolitsch)
Üdersdorf ⓘ Emmelberg	[Volborthite] in the collection Ch.&H. Schäfer
ⓘ Löhley	[Volborthite] Hentschel, G., Neufunde von Üdersdorf, Lapis, Weise Verlag, München, 09/1993
Gerolstein Hillesheim ⓘ Graulay quarry	[Volborthite] Blass, G., Graf , HW., Neufunde von bekannten Fundorten (X), Mineralien-Welt 2/1994
Walsdorf ⓘ Goßberg	[Volborthite] Hohn, G., Leu, K. (2015): Mineralien vom Goßberg bei Walsdorf, Eifel.- Lapis, 40 (Nr. 11), S. 30-36 + 54.
Saxony Görlitz District Neißeaue ⓘ Emmerichswalde	[Volborthite] Witzke, T. & Giesler, T. (2013): Seltene Phosphate und Vanadate von Emmerichswalde bei Görlitz/Sachsen. Mineralien-Welt 24 (2), 40-55
Thuringia Gotha District Friedrichroda Gottlob Hill ⓘ Glücksstern Mine	[Volborthite] *Wittern, Artur (2001) Mineralfundorte und ihre Minerale in Deutschland* (1st ed.) Schweizerbart, Stuttgart.**
Greiz District Kauern ⓘ Lichtenberg Absetzer dump	[Volborthite] T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
Ronneburg ⓘ Lichtenberg open cast	[Volborthite] T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
Saalfeld-Rudolstadt District Saalfeld Garnsdorf ⓘ Jeremias Glück Mine (Fairy Grotto)	[Volborthite] F. Rüger, L. Senf & T. Witzke: Lapis 1995 (1), 15-26. Ullrich, B. (2018). Zur Mineralogie anthropogen induzierter Alterationsprozesse – Sekundärminerale des historischen Alaunschieferbergbaus von Saalfeld und Schmiedefeld im Thüringischen Schiefergebirge. Geologica Saxonica 64, 67-79. [http://www.senckenberg.de/files/content/forschung/publikationen/geologicasaxonica/64/04_geologica-saxonica_64_ullrich.pdf]

Greece
Attica East Attica Lavreotiki ⓘ Lavrion slag localities	[Volborthite] 42. Schnorrer-Köhler, G. (1986): Neufunde in den Schlacken von Laurion. Lapis, 11 (6), 25-29 *Gelaude, Piet, van Kalmthout, Piet, Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags. Piet Gelaude, Piet van Kalmthout , Christian Rewitzer.*

Hungary
Borsod-Abaúj-Zemplén County Kazincbarcika District Dédestapolcsány ⓘ Rágyincs Valley	[Volborthite]

Italy
Campania Naples Somma-Vesuvius Complex ⓘ Mount Vesuvius	[Volborthite] Balassone, G. Petti, C. Mondillo, N. Panikorovskii, T.L. de Gennaro, R. Cappelletti, P. Altomare, A. Corriero, N. Cangiano, M. Russo, M., Punzo, I. (2004): I minerali del Somma-Vesuvio, AMI D’Orazio, L. (2019) Copper Minerals at Vesuvius Volcano (Southern Italy): A Mineralogical Review. Minerals 9, 730.
Torre del Greco ⓘ Camaldoli della Torre	[Volborthite] Scacchi, A. (1879) Ricerche chimiche sulle incrostazioni gialle della lava vesuviana del 1631. Atti della Reale Accademia delle Scienze fisiche e matematiche, Napoli, 8, 10, 1-15 Russo, M., and Punzo, I. (2004) I Minerali del Somma-Vesuvio. AMI Associazione Micro-mineralogica Italiana, Tipografia Fantigrafica s.r.l., Cremona, 320 pages.
ⓘ Villa Inglese quarries	[Volborthite] Scacchi, A. (1879) Ricerche chimiche sulle incrostazioni gialle della lava vesuviana del 1631. Atti della Reale Accademia delle Scienze fisiche e matematiche, Napoli, 8, 10, 1-15 Del Caldo, A., Moro, C., Gramaccioli, C.M., Boscardin, M. (1973) Guida ai minerali. Fratelli Fabbri Editori, Milano, 208 pages De Michele, V. (1974) Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol., 408 pages Russo, M. (1981) Mineralogia Campana: Le lave del 1631. Cava di Villa Inglese. Notiziario del Gruppo Mineralogico Geologico Napoletano, 2, 2, 7-12 Carati, M. (1982) Guida alla mineralogia vesuviana. Edizioni Calderini, Bologna, 121 pages Russo, M. (2003) Mineralogia vesuviana: le cave di Villa Inglese (Torre del Greco, NA). Micro (località), 1-10 Russo, M., and Punzo, I. (2004) I Minerali del Somma-Vesuvio. AMI Associazione Micro-mineralogica Italiana, Tipografia Fantigrafica s.r.l., Cremona, 320 pp. Russo, M., Campostrini, I., and Castellano, F. (2011) Ritrovamento di atacamite in cristalli al Vesuvio. Micro, 9, 2-2011, 62-63.
ⓘ Vesuvius fumaroles	[Volborthite] Pelloux, A. (1927) The minerals of Vesuvius. American Mineralogist, 12, 14–21 Russo, M., and Punzo, I. (2004) I Minerali del Somma-Vesuvio. AMI Associazione Micro-mineralogica Italiana, Tipografia Fantigrafica s.r.l., Cremona, 320 pp.
Liguria Genoa Ne ⓘ Cassagna Mine	[Volborthite] Redazionale (2005): Sistematica ligure: resoconto 2005. Notiziario di Mineralogia del Ferrania Club, 19 , 3-5.
ⓘ Molinello Mine	[Volborthite] M.E. Ciriotti (2005) Probed Ma, Chi, Carbone, Cristina, Belmonte, Donato (2023) Cortesognoite, CaV2Si2O7(OH)2·H2O, a New Mineral from the Molinello Manganese Mine, Graveglia Valley, Italy. Crystals, 13 (9) doi:10.3390/cryst13091295
Reppia ⓘ Case Soprane	[Volborthite] Antofilli, M., Borgo, E., and Palenzona, A. (1985) I nostri minerali. Geologia e mineralogia in Liguria. II Edizione. SAGEP Editrice, Genova, 296 pp.
ⓘ Gambatesa Mine	[Volborthite] Pipino, G. (1984) Gambatesa, l'ultima miniera della Liguria. Rivista Mineralogica Italiana, 8(4), 131-142.
ⓘ Monte Copello-Reppia Prospect	[Volborthite] Camarda, S., Muzio, C., Passarino, G., Sanguineti, G. (2013) Reppia, Ne, Val Graveglia, Genova. Minerali secondari di un giacimento ferroso cuprifero. Rivista Mineralogica Italiana, 2013 (3) Museo Civico di Storia Naturale. 176-185
Statale ⓘ Scrava Mine (Statale Mine)	[Volborthite] Basso, R., A. Palenzona, L. Zefiro (1988) Crystal structure refinement of volborthite from Scrava mine (Eastern Liguria, Italy). Neues Jahrbuch für Mineralogie, Monatshefte 1988, 385-394, Bruno Marello collection Marchesini M. (1999): Tronchi silicizzati: associazioni a rame, arsenico e vanadio. Riv. Mineral. Ital., 23, 2 (2/1999), 116-122. *Pagano, Renato, Marchesini, Marco (2001) The Val Graveglia Manganese District, Liguria, Italy. The Mineralogical Record, 32 (5) 349-415*pp.356-356
La Spezia Province Maissana Lagorara Valley ⓘ Mt. Scogliera	[Volborthite] Antofilli, Borgo, Palenzona, 1985. I nostri minerali. Geologia e mineralogia in Liguria. Edizioni Melita, La Spezia
ⓘ Monte Alpe Mine ?	[Volborthite] Castellaro, F., Passarino, G. (2011): I minerali di Monte Alpe. Sezione dell'antica Concessione Tre Monti (La Spezia e Genova). Rivista Mineralogica Italiana. 4/2011, 214-224.
Rocchetta di Vara ⓘ Monte Nero Mine	[Volborthite] Bracco, R. and Balestra, C. (2014): La miniera di Monte Nero, Rocchetta Vara, La Spezia, Liguria: minerali classici e novità. Micro, 12, 1, 2-28.
Savona Province Castelvecchio di Rocca Barbena ⓘ Zuccarello (Rian Gianco)	[Volborthite] Antofilli, M., Borgo, E., Palenzona, A. (1985) I nostri minerali. Geologia e mineralogia in Liguria. II Edizione. SAGEP Editrice, Genova, 296 pp.
Tuscany Livorno Province Livorno Valle Benedetta ⓘ Via della Sambuca U-V occurrence ("Sambuca")	[Volborthite] Bonifazi, Marco (2021) TOSCANA, Minerali di uranio a Livorno.
Lucca Province Bagni di Lucca ⓘ Monte Pratofiorito	[Volborthite] Biagioni, C. (2009). Minerali della Provincia di Lucca. Associazione Micro-Mineralogica Italiana, Cremona, 352 pp.
Massa-Carrara Province ⓘ Carrara	[Volborthite] Orlandi, P., Bracci, G., Dalena, D., Duchi, G., and Vezzalini, G. (1980) I minerali delle geodi della formazione marmifera di Carrara. Atti della Società Toscana di Scienze Naturali, Memorie, serie A, 87, 93-124 Orlandi, P., and Franzini, M. (1994) I minerali del marmo di Carrara. Cassa di Risparmio di Carrara - Amilcare Pizzi Editore S.p.A., Milano, 109 pp. Orlandi, P., and Criscuolo, A. (2009) Minerali del marmo delle Alpi Apuane. Parco delle Alpi Apuane - Pacini Editore, Ospedaletto-Pisa, 180 pp.
Colonnata quarrying basin ⓘ Calagio quarries (Calagio Quarry; Olmo Quarry)	[Volborthite] Orlandi, P., Bracci, G., Dalena, D., Duchi, G., and Vezzalini, G. (1980) I minerali delle geodi della formazione marmifera di Carrara. Atti della Società Toscana di Scienze Naturali, Memorie, serie A, 87, 93-124 Franzini, M., Orlandi, P., Bracci, G., and Dalena, D. (1982) I minerali del marmo di Carrara. Rivista Mineralogica Italiana Ed., Milano, 110 pp. Orlandi, P., and Criscuolo, A. (2009) Minerali del marmo delle Alpi Apuane. Parco delle Alpi Apuane - Pacini Editore, Ospedaletto-Pisa, Pisa, 180 pp.
Colonnata ⓘ Gioia quarries	[Volborthite] Orlandi, P. (2004) Carraraite, zaccagnaite, IMA 1998-033 e altre specie rinvenute nelle geodi dei marmi Apuani. Rivista Mineralogica Italiana, 28, 1 (1-2004), 24-27 Orlandi, P., and Criscuolo, A. (2009) Minerali del marmo delle Alpi Apuane. Parco delle Alpi Apuane - Pacini Editore, Ospedaletto-Pisa, 180 pp.
Miseglia quarrying basin (Miseglia-Fantiscritti quarrying basin; Fantiscritti quarrying basin) ⓘ Fantiscritti	[Volborthite] Matteo Chinellato collection
ⓘ Val Bona Quarry (Valbona Quarry)	[Volborthite] Orlandi, P., and Criscuolo, A. (2009) Minerali del marmo delle Alpi Apuane. Parco delle Alpi Apuane - Pacini Editore, Ospedaletto-Pisa, 180 pp.
Torano quarrying basin ⓘ Val Pulita Quarry (Valpulita Quarry)	[Volborthite] Brizzi, G. (1986) Nuovo ritrovamento di sulvanite a Carrara. Rivista Mineralogica Italiana, 10, 1 (1-1986), 39-41 Bombarda, L., Granai, F., and Orlandi, P. (1999) Le cave di Val Bona e Val Pulita. Rivista Mineralogica Italiana, 23, 2 (2-1999), 100-102 Orlandi, P., and Criscuolo, A. (2009) Minerali del marmo delle Alpi Apuane. Parco delle Alpi Apuane - Pacini Editore, Ospedaletto-Pisa, 180 pp. Morino, A. (2017) I minerali nel marmo di Carrara. I minerali estetici [Minerals in Carrara marble. The aesthetic minerals]. Rivista Mineralogica Italiana, 2017 (4) Museo Civico di Storia Naturale. 242-253 Biagioni, C., Orlandi, P., Camarda, S., Chinellato, M., Appiani, R., Del Chiaro, L., and Sanguineti, G. (2019) Minerals from marbles of Carrara and the Apuan Alps. LoGisma editore, Vicchio (Firenze) - Musumeci S.p.A., Quart (Aosta), 144 pp.
Massa Casette ⓘ Gioia quarries (Gioia-Casette quarries; Gioia-Casette quarrying basin)	[Volborthite] Orlandi, P., and Bellè, E. (2002) I minerali del marmo del bacino del Frigido, Massa. Comune della Città di Massa - Tipografia Ceccotti, Massa, 144 pp. Orlandi, P. (2004) Carraraite, zaccagnaite, IMA 1998-033 e altre specie rinvenute nelle geodi dei marmi Apuani. Rivista Mineralogica Italiana, 28, 1 (1-2004), 24-27 Orlandi, P., and Criscuolo, A. (2009) Minerali del marmo delle Alpi Apuane. Parco delle Alpi Apuane - Pacini Editore, Ospedaletto-Pisa, 180 pp.

Japan
Aichi Prefecture Inuyama ⓘ Tsugao	[Volborthite] Alfredo Petrov collection
Gifu Prefecture Kakamigahara City (Kagamigahara City) ⓘ Unuma	[Volborthite] Matsubara, S., Saito, Y., Kato, A. (1990) Vanadium minerals in siliceous sedimentary rocks from Unuma, Gifu Prefecture, Japan, with special reference to volborthite and roscoelite. Ganseki-Koubutsu-Koshogaku Zasshi, 85, 522-530.
Tokyo Metropolis Hachijō Subprefecture Aogashima ⓘ Yuhama beach	[Volborthite] PXRD by John Attard, May 2014, on samples collected by Alfredo Petrov.

Kazakhstan
Kyzylorda Region Shieli ⓘ Balasauskandyk V Deposit	[Volborthite] *Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.*
Turkistan Region Aksumbe ⓘ Kurumsak V Deposit	[Volborthite] Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30 V.Y. Karpenko et al.: Zap. Vses. Mineral. Obshch. 133(2):59-68 (2004)

Kyrgyzstan
Batken Region Kadamjay District ⓘ Kara-Chagyr Mountain	[Volborthite] Karpenko, V.Yu., Pautov, L.A., Sokolova, E., Hawthorne, F.C., Agakhanov, A.A., Dkaya, T.V., and Bekenova, G.K. (2004) Ankinovichite, nickel analogue of alvanite, a new mineral from Kurunsak (Kazakhstan) and Kara-Chagyr (Kirgizia). Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 133(2): 59-68.
Issyk-Kul Region ⓘ Kuilyu	[Volborthite] Pautov L.A., Belakovskii D.I., Baimagambetov B.K. Sulvanite: revision of specimens from museum funds and litherature data, new occurrence in South-Eastern Kirgizia, - Novye dannye o mineralah, Moscow, Nauka, 1989, v.36, p.91-100.
Osh Region Aravan District Tyuya-Muyun Massif ⓘ Tyuya-Muyun Cu-V-U deposit	[Volborthite] *Pavel.M. Kartashov (n.d.) analytical data.* Guillemin, C. (1956) Contribution à la minéralogie des arséniates, phosphates et vanadates de cuivre. II. — Phosphates et vanadates de cuivre. Bulletin de la Société Française de Minéralogie et de Cristallographie, 79, 4-6, 219-275.

Mexico
Sonora Santa Cruz Municipality Milpillas ⓘ Milpillas Mine	[Volborthite] Jordi Fabre Evan A. Jones & Peter K. M. Megaw (2021) The Milpillas Mine, Cuitaca, Sonora, Mexico. Mineralogical Record 52:5 pp 493- 626

Namibia
Erongo Region Swakopmund Constituency ⓘ Gorob Mine	[Volborthite] www.attawaygems.com/NMFG/lets_talk_gemstones_staurolite.htm Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p. 86-89
ǁKaras Region ǃNamiǂNûs Constituency ⓘ Sinclair Mine	[Volborthite] Jean-Pierre specimens photo ID 1182191 1182192 1182534

Poland
Lower Silesian Voivodeship ⓘ Karkonosze County	[Volborthite] Mochnacka, K., Oberc-Dziedzic, T., Mayer, W., & Pieczka, A. (2012). Ore mineralization in the Miedzianka area (Karkonosze-Izera Massif, the Sudetes, Poland): new information. Mineralogia Polonica, 43(3-4), 155-178.
Gmina Janowice Wielkie ⓘ Miedzianka	[Volborthite] Schneider G. 1894: Die Minerale des Riesen- und Isergebirges. Wanderer im Riesengeb. Bd 6.
Miedzianka field (Western field) ⓘ Frische Glück mine	[Volborthite] *Lis, Józef, Sylwestrzak, Hubert (1986) Minerały Dolnego Śląska [Minerals of the Lower Silesia]. Wydawnictwa Geologiczne, Warszawa. p.1-791.*

Portugal
Beja Barrancos Barrancos ⓘ Minancos Mine	[Volborthite] Rui Nunes collection

Russia
Kamchatka Krai Milkovsky District Tolbachik Volcanic field ⓘ Mountain 1004	[Volborthite] Pekov, I.V., Koshlyakova, N.N., Zubkova, N.V., Krzątała, A., Belakovskiy, D.I., Galuskina, I.O., Galuskin, E.V., Britvin, S.N., Sidorov, E.G., Vapnik, Y. and Pushcharovsky, D.Y. (2022) Pliniusite, Ca5 (VO4) 3F, a new apatite-group mineral and the novel natural ternary solid-solution system pliniusite–svabite–fluorapatite. American Mineralogist, 107(8), 1626-1634.
Khakassia (Republic of Khakassia) Sorsk ⓘ Potekhina Village	[Volborthite] Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York. *Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.*
Komi Republic Pay Khoy Mountains ⓘ Kara River	[Volborthite] *Pavel.M. Kartashov (n.d.) analytical data.*
ⓘ Silova-Yakha River	[Volborthite] Joan Rosell
Perm Krai Kungursky District Kalinino (Yugovskii Zavod) ⓘ Sofronovskii Cu Mine	[Volborthite] *Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.*
Motovilikhinsky City District ⓘ Alexandrov mine	[Volborthite] Dana 6:839.
ⓘ Voskresenskii Cu Mine (Woskressensk)	[Volborthite] Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 819.
Republic of Karelia Medvezhyegorsky District Zaonezhie peninsula ⓘ Srednyaya Padma mine	[Volborthite] Pavel M/ Kartashov analytical data (2013)
Sakhalin Oblast Kuril Islands (Kurile Islands) Severo-Kurilsky District Atlasov Island ⓘ Alaid volcano	[Volborthite] Zhitova, E.S., Anikin, L.P., Sergeeva, A.V., Ismagilova, R.M., Rashidov, V.A. , Chubarov, V.M., and Kupchinenko, A.N. [Житова, Е.С., Аникин, Л.П., Сергеева, А.В., Исмагилова, Р.М., Рашидов, В.А., Чубаров, В.М., и Купчиненко, А.Н.] (2020) Volborthite Occurrence at the Alaid Volcano (Atlasov Island, Kuril Islands, Russia) [Проявление фольбортита на вулкане Алаид (о. Атласова, Курильские острова, Россия)] Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva [Записки Всероссийского Mинералогического Oбщества], 149, 3, 78–95 (in Russian) Rashidov, V.A., and Anikin, L.P. [Рашидов, В.А., и Аникин, Л.П.] (2020 a) Field works at Alaid volcano (Atlasov island, Kuril Islands) in 2020 [Полевые работы на вулкане Алаид (о. Атласова, Курильские острова) в 2020 году]. Bulletin KRASEC. Earth Sciences [Вестник КРАУНЦ. Науки о Земле], 2020, 3, 47, 112–119 (in Russian).

Slovakia
Banská Bystrica Region Revúca District Sirk ⓘ ~~Železník iron deposit~~	[Volborthite] Grecula,P. et al., 1995: Ložiska nerastných surovín Slovenského rudohoria. Zväz.1, Bratislava, 834 s
Rimavská Sobota District Vyšný Skálnik ⓘ Kociha occurrence	[Volborthite] lení Národního muzea v Praze, roč . 11, s. 159-166. Novák, F. et al. (2003): Koninckit, evansit, vashegyit a volborthit z Kocihy u Rimavské Soboty. Bulletin mineralogicko-petrografického oddě

Spain
Catalonia Lleida El Pallars Jussà La Vall Fosca La Torre de Cabdella Castell-estaó ⓘ Eureka mine	[Volborthite] Joan Rosell (PLA1 ?). Castillo-Oliver, M. Melgarejo, J.C. Torró, L. Villanova-de-Benavent, C. Campeny, M. Díaz-Acha, Y. Amores-Casals, S. Xu, J. Proenza, J. Tauler, E. Sandstone-Hosted Uranium Deposits as a Possible Source for Critical Elements: The Eureka Mine Case, Castell-Estaó, Catalonia. Minerals 2020, 10, 34.

Switzerland
Grisons Viamala Region Ferrera Ausserferrera ⓘ Fianel	[Volborthite] EDXS analyses by P. Roth, November 2018 XRD analysis by N. Meisser, December 2018. In the marbles.

UK
England Cornwall St Just Botallack ⓘ Wheal Edward	[Volborthite] Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.
St Keverne ⓘ Dean Quarry ?	[Volborthite] Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.
Devon East Devon Budleigh Salterton ⓘ Littleham Bay	[Volborthite] from XRD and EPMA results - B. Smith. Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.
Leicestershire Charnwood Shepshed ⓘ Newhurst Quarry	[Volborthite] Peter Lord collection Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.
Hinckley and Bosworth Stanton under Bardon Cliffe Hill Quarry ⓘ New Cliffe Hill Quarry	[Volborthite] *Hubbard, N., Burchmore, S., Green, D. I. (2005) A Remarkable Supergene Mineral Suite from New Cliffe Hill Quarry, Stanton Under Bardon, Leicestershire. UK Journal of Mines and Minerals 26, 31-42* *Hubbard, N., Burchmore, S., Green, D. I. (2005) A Remarkable Supergene Mineral Suite from New Cliffe Hill Quarry, Stanton Under Bardon, Leicestershire. UK Journal of Mines and Minerals 26, 31-42* Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.
Leicester ⓘ Glen Parva	[Volborthite] King, R.J. and Dixon, J.A. (1971) A New Occurrence of Vanadium Minerals in Leicestershire. Mineralogical Magazine, vol. 38, n° 296, 488-492. *Embrey, Peter G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, 42 (322) 169-177 doi:10.1180/minmag.1978.042.322.01* Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.
ⓘ Butterley & Blaby Brick Pit (Blaby Mine)	[Volborthite] King, R.J. and Dixon, J.A. (1971) A New Occurrence of Vanadium Minerals in Leicestershire. Mineralogical Magazine, vol. 38, n° 296, 488-492. Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.
North West Leicestershire Bardon ⓘ Bardon Hill Quarry	[Volborthite] Specimen L1436 in the Leicester University collection. Ince, F. (2007) The mineralogy of Bardon Hill Quarry, Coalville, Leicestershire. Journal of the Russell Society, vol. 10, 27-39. Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.

USA
Arizona Apache County Cane Valley Mining District Yazzie Mesa Monument No. 2 channel ⓘ Monument No. 2 Mine	[Volborthite] Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 415.
Carrizo Range Black Rock Point Mining District Black Rock Point ⓘ Martin Mine (AEC Plot No. 1; Geo. Simpson No. 1b Mine)	[Volborthite] Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 118. Chenoweth, W.L., (2014) The Geology and Production History of the Black Rock Point Nos. 1 and 3 Uranium-Vanadium Mines, Apache County, Arizona. Arizona Geological Survey Contributed Report, CR-14-B, 12 p.
Dinnehotso Garnet Ridge ⓘ Keith Francis claim (Bluestone No. 1 Mine)	[Volborthite] Chenoweth, William L. (1991) The Geology and Production History of the Bluestone No.1 Uranium· Vanadium Mine, Garnet Ridge, Apache County, Arizona, with Notes on the U.S. Atomic Energy Commission's Drilling Project. Arizona Geological Survey Contributed Report 91-B
Coconino County Prospect Canyon Mining District ⓘ Ridenour Mine (Ridenaur Mine; Grand Canyon Mine)	[Volborthite] Testing at University of Arizona. Most specimens labelled Tangeite are actually Volborthite.
Gila County Globe-Miami Mining District Globe Hills Mining District Globe ⓘ North of Globe	[Volborthite] Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 415.
Navajo County Mineral Mining District Mystery Valley Monument No. 1 channel (Channel No. 36) ⓘ Mitten No. 2 Mine	[Volborthite] Witkind, Irving J. & Thaden (1963), USGS Bull. 1103, Geology & Uranium-Vanadium Deposits of the Monument Valley Area Apache and Navajo Counties, Arizona: 68, 135. Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 415
ⓘ Monument No. 1 Mine	[Volborthite] Holland, H.D., et al (1958), The use of leachable uranium in geochemical prospecting on the Colorado Plateau-II, The distribution of leachable uranium in surface samples in the vicinity of ore bodies, Econ.Geol.: 53: 190-209. Witkind, I.J. (1961), The uranium-vanadium ore deposit at the Monument No. 1-Mitten No. 2 mine, Monument Valley, Navajo Co., AZ, USGS Bull. 1107-C: 219-242 Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 405
California Inyo County Inyo Mts (Inyo Range) Kearsarge Mining District [2] Kearsarge ⓘ Green Monster Mine	[Volborthite] Paul M. Adams (2003) Unusual vanadium minerals from the Green Monster Mine, Inyo County, California. Mineral News, 19, #8.
San Benito County Panoche ⓘ Llanada Copper Mine	[Volborthite] www.mineralsocal.org *Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.*pp.322-323
Colorado Costilla County McCarty Park Area ⓘ Loco Alice Prospect (Trinchera Ranch)	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
Custer County ⓘ Silver Cliff Mining District	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
Huerfano County ⓘ La Veta-Huerfano Park areas	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
La Veta Pass Area ⓘ City Slicker Mine	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
La Plata County La Plata Mining District (California Mining District) La Plata ⓘ Tippecanoe Mine (Laura A. Mill Site; MS 2551b; Laura A.; MS 2551a; Monitor; MS 2084; Cora G.; MS 4873; Patented Claims: Tippecanoe; MS 1346)	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
Mesa County Gateway Mining District Beaver Mesa ⓘ Packrat Mine	[Martyite] Kampf, Anthony R., Nash, Barbara P., Marty, Joe, Hughes, John M. (2017) Mesaite, (V₂O₇)₃·12H₂O, a new vanadate mineral from the Packrat mine, near Gateway, Mesa County, Colorado, USA. Mineralogical Magazine, 81 (2) 319-327 doi:10.1180/minmag.2016.080.095
Moffat County Skull Creek Mining District (Blue Mountain Mining District) ⓘ Blue Mountain group (Blue Mountains 4 claim; Bozo No. 1 claim; Dorothy No. 2 claim; Skull Creek Carnotite deposit)	[Volborthite] Beroni, Ernest Pete McKeown, Francis Alexander (1952) Reconnaissance for uraniferous rocks in northwestern Colorado, southwestern Wyoming, and northeastern Utah. USGS Trace Elements Investigations 308A *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
Montrose County Uravan Mining District ⓘ Pluto (Pluto - Saturn)	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Sunrise No. 4	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
Park County Garo Area ⓘ Garo Deposit (Shirley May Mine; Duvall Discovery)	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
San Miguel County Bull Pen Canyon ⓘ Arrowhead tunnel (Arrowhead prospect; O'Neill's claim)	[Volborthite] Rocks & Minerals 80:5 pp358-359
Klondike Mining District ⓘ Hidden Treasure Mine	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
Slick Rock Mining District ⓘ Burro Mine	[Volborthite] Travis Olds collection Kampf, Anthony R., Plášil, Jakub, Nash, Barbara P., Marty, Joe (2019) Ammoniomathesiusite, a new uranyl sulfate–vanadate mineral from the Burro mine, San Miguel County, Colorado, USA. Mineralogical Magazine, 83 (1) 115-121 doi:10.1180/mgm.2018.112
ⓘ Cougar Mine (Cougar Ventures C-SR-15)	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.* Shawe, D.R., (2011), Uranium-vanadium deposits of the Slick Rock district, Colorado: U.S. Geological Survey Professional Paper 576-F, 80 p., 20 plates.
ⓘ Little Muriel Mine	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Mucho Grande Mine	[Volborthite] Collected by and in the collection of Brent Thorne.
ⓘ Parrot Mine Group	[Volborthite] Collected by and in the collection of Brent Thorne.
ⓘ Radium Nos. 5 & 6	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ San Juan No. 3 mine	[Volborthite] *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Veta Mad Mine (Veta Glad Mine)	[Volborthite] Collected by and in the collection of Brent Thorne
Idaho Adams County Seven Devils Mining District ⓘ Can-Ida Mines pit	[Volborthite] *Ream, Lanny R. (2004) Idaho Minerals* (2nd ed.) L. R. Ream Publishing, Coeur d'Alene, ID.**
Lemhi County Junction Mining District (Little Eightmile Mining District) ⓘ Iron Dyke Mine	[Volborthite] *Ream, Lanny R. (2004) Idaho Minerals* (2nd ed.) L. R. Ream Publishing, Coeur d'Alene, ID.**
Michigan Baraga County Huron River ⓘ Huron River Uranium prospect (Unnamed V prospect; MRDS - 10171055)	[Volborthite] *Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan* (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University, Houghton, MI. 252pp.**
Keweenaw County Grant Township Copper Harbor ⓘ Manganese Mine	[Volborthite] Carlson, S.M., Olds, T.A., Rascona, J., Smith, A.E. (2014) A new locality for volborthite from the Manganese Mine, Copper Harbor, Michigan. Mineral News, 30, #2, 1ff.
Minnesota St. Louis County ⓘ Knife River	[Volborthite] Michigan tech.Identification: SEM-EDS Tom Rosemeyer had a specimen tested at Michigan TechIdentification: Inferred (explain how)
Nevada Elko County ⓘ Carlin Mining District	[Volborthite] Handbook of Mineralogy
Eureka County Carlin Trend Maggie Creek Mining Subdistrict ⓘ Gold Quarry Mine	[Volborthite] *Jensen, Martin, Rota, Joseph C., Foord, Eugene E. (1995) The Gold Quarry Mine, Carlin-Trend, Eureka County, Nevada. The Mineralogical Record, 26 (5) 449-469*
Gibellini Mining District ⓘ Bisoni property (Bisoni-McKay property)	[Volborthite] *Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication* 31. Nevada Bureau of Mines and Geology**
Lynn Mining District Elko ⓘ Carlin Gold mine	[Volborthite] Mineralogical Record 26:467
Lyon County Singatse Range Yerington Mining District Ludwig ⓘ Douglas Hill Mine	[Volborthite] *Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication* 31. Nevada Bureau of Mines and Geology**
Nye County Toquima Range Manhattan Mining District ⓘ Unnamed prospect	[Volborthite] *Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication* 31. Nevada Bureau of Mines and Geology**
New Mexico Mora County ⓘ Coyote Creek District	[Volborthite] *Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico* (3rd ed.) University of New Mexico Press, Albuquerque, NM.**
Taos County ⓘ Picuris District	[Volborthite] *Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico* (3rd ed.) University of New Mexico Press, Albuquerque, NM.**
ⓘ Copper Hill deposits	[Volborthite] *Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico* (3rd ed.) University of New Mexico Press, Albuquerque, NM.**
Oregon Klamath County ⓘ Summit Rock	[Volborthite] Micro Probe Vol. 10 No. 6
ⓘ Uravan Mineral Belt	[Volborthite] Barton, I., Barton, M. D., & Thorson, J. (2018) Characteristics of Cu and UV Deposits in the Paradox Basin (Colorado Plateau) and Associated Alteration. Guidebook series, 59.
Utah Daggett County Red Creek (Browns Park) ⓘ Yellow Canary Uranium deposit	[Volborthite] USGS: Geological Survey Circular 312 *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**
Emery County San Rafael Swell Mining District ⓘ Pick's Delta Mine	[Volborthite] Page, L. R. Stocking, H. E. Smith, H. B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300 pp263-279 *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**
Garfield County ⓘ Henry Mountains	[Volborthite] Collection of Alex Earl
Grand County Gateway Mining District ⓘ Polar Mesa	[Volborthite] Collected by and in the collection of Brent Thorne.
ⓘ Richardson Mining District	[Volborthite] Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 819 *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**
Thompsons Mining District Yellow Cat Mesa ⓘ Little Eva Mine	[Martyite] Kasatkin, A. V., Plášil, J., Marty, J., Agakhanov, A. A., Belakovskiy, D. I., Lykova, I. S. (2014) Nestolaite, CaSeO₃·H₂O, a new mineral from the Little Eva mine, Grand County, Utah, USA. Mineralogical Magazine, 78 (3) 497-505 doi:10.1180/minmag.2014.078.3.02 Kasatkin, A. V., Plášil, J., Pekov, I. J., Belakovskiy, D. I., Nestola, F., Čejka, J., Vigasina, M. F., Zorzi, F., Thorne, B. (2015) Karpenkoite, Co₃(V₂O₇)(OH)₂·2H₂O, a cobalt analogue of martyite from the Little Eva mine, Grand County, Utah, USA. Journal of GEOsciences, 60 (4) 251-257
Juab County Tintic Mining District Mammoth ⓘ Gold Chain Mine	[Volborthite] SEM EDAX verified by Excalibur minerals. Collected by and in the collection of Brent Thorne.
ⓘ North Star Mine (Star Consolidated Mine)	[Volborthite] Collected by and in the collection of Alex Earl
ⓘ Upper dumps	[Volborthite] Collected by and in the collection of Alex Earl
San Juan County Elk Ridge Mining District ⓘ Notch Mines	[Volborthite] Page, L. R. Stocking, H. E. Smith, H. B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300 pp195-201
ⓘ Notch no. 5 Mine (McKenzie)	[Volborthite] *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**
ⓘ Notch no. 6 Mine	[Volborthite] *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**
La Sal Creek Mining District ⓘ Blue Cap Mine	[Martyite] *Kampf, A. R., Steele, I. M. (2008) Martyite, a new mineral species related to volborthite: Description and crystal structure. The Canadian Mineralogist, 46 (3) 687-692 doi:10.3749/canmin.46.3.687* Kampf, A. R., Hughes, J. M., Marty, J., Nash, B. (2012) Postite, Mg(H₂O)₆Al₂(OH)₂(H₂O)₈(V₁₀O₂₈)·13H₂O, a new mineral species from the La Sal District, Utah: Crystal structure and descriptive mineralogy. The Canadian Mineralogist, 50 (1) 45-53 doi:10.3749/canmin.50.1.45
ⓘ Vanadium Queen Mine	[Martyite] Kampf, A. R., Hughes, J. M., Marty, J., Nash, B. (2012) Postite, Mg(H₂O)₆Al₂(OH)₂(H₂O)₈(V₁₀O₂₈)·13H₂O, a new mineral species from the La Sal District, Utah: Crystal structure and descriptive mineralogy. The Canadian Mineralogist, 50 (1) 45-53 doi:10.3749/canmin.50.1.45
Monument Valley Mining District ⓘ Holiday Mesa	[Volborthite] Page, L. R. Stocking, H. E. Smith, H. B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300 pp263-279
Tooele County Greeley Mining District ⓘ South Thorpe Hills copper prospect	[Volborthite] *Schempp, Christy A., Schaller, Waldemar T. (1931) Sulvanite from Utah. American Mineralogist, 16 (12). 557-562* *Schempp, Christy A., Schaller, Waldemar T. (1931) Sulvanite from Utah. American Mineralogist, 16 (12). 557-562* *Schempp, Christy A., Schaller, Waldemar T. (1931) Sulvanite from Utah. American Mineralogist, 16 (12). 557-562* *Schempp, Christy A., Schaller, Waldemar T. (1931) Sulvanite from Utah. American Mineralogist, 16 (12). 557-562* Dolanski, J. (1974) Sulvanite from Thorpe Hills, Utah. American Mineralogist 59:307-313. Dolanski, J. (1974) Sulvanite from Thorpe Hills, Utah. American Mineralogist 59:307-313. Dolanski, J. (1974) Sulvanite from Thorpe Hills, Utah. American Mineralogist 59:307-313. Dolanski, J. (1974) Sulvanite from Thorpe Hills, Utah. American Mineralogist 59:307-313. Dolanski, J. (1974) Sulvanite from Thorpe Hills, Utah. American Mineralogist 59:307-313. *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona. Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona. Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona. Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona.**
Washington County ⓘ Silver Reef Mining District	[Volborthite] Carl L. Ege (2005) Selected Mining Districts of Utah. Utah Geological Survey Miscellaneous Publication 05-5
ⓘ B. Reef Mine	[Volborthite] *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**
ⓘ Tecumseh Mine	[Volborthite] *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**
ⓘ Wells pit	[Volborthite] *Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**

Uzbekistan
Navoiy Uchkuduk area ⓘ Altynsai gold occurrences	[Volborthite] no reference listed
ⓘ Hodzha-Akhmet Quarry	[Volborthite] rruff.geo.arizona.edu (2006) http://rruff.geo.arizona.edu/doclib/hom/volborthite.pdf

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