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This page kindly sponsored by Mark Andrews
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About SklodowskiteHide

Marie Skłodowska Curie
Mg(UO2)2(SiO3OH)2 · 6H2O
Light yellow to green-yellow
Adamantine, Vitreous, Silky
2 - 3
Specific Gravity:
Crystal System:
Named after Marie Skłodowska-Curie (7 November 1867, Warsaw, Russian Empire (now Poland) - 4 July 1934, Passy, Haute-Savoie, France) who, with her husband Pierre, was a pioneer in the study of radioactivity. She was given many awards including the 1903 Nobel Prize in Physics, and the 1911 Nobel Prize in Chemistry.

Classification of SklodowskiteHide

Approved, 'Grandfathered' (first described prior to 1959)

9 : SILICATES (Germanates)
A : Nesosilicates
K : Uranyl neso- and polysilicates

53 : NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
3 : Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)

14 : Silicates not Containing Aluminum
16 : Silicates of U

Physical Properties of SklodowskiteHide

Adamantine, Vitreous, Silky
Transparent, Translucent
earthy when massive
Light yellow to green-yellow
2 - 3 on Mohs scale
on {100}
3.54 g/cm3 (Measured)    3.51 g/cm3 (Calculated)

Optical Data of SklodowskiteHide

Biaxial (+)
RI values:
nα = 1.613 - 1.615 nβ = 1.635 - 1.642 nγ = 1.656 - 1.657
Max Birefringence:
δ = 0.043
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
strong r > v
X= colorless
Y= yellow
Z= pale yellow

Chemical Properties of SklodowskiteHide

Mg(UO2)2(SiO3OH)2 · 6H2O
Common Impurities:

Crystallography of SklodowskiteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 17.382(6) Å, b = 7.047(1) Å, c = 6.610(2) Å
β = 105.88°
a:b:c = 2.467 : 1 : 0.938
Unit Cell V:
778.77 ų (Calculated from Unit Cell)
Acicular crystals
With {001} or {100} as twin plane

Crystal StructureHide

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2x2x2 | 3x3x3 | 4x4x4
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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0012337SklodowskiteRyan R R, Rosenzweig A (1977) Sklodowskite, MgO*2UO3*2SiO2*7H2O Crystal Structure Communications 6 611-6151977Naica, Chihuahua, Mexico0293
0015548SklodowskiteMokeeva V I (1964) The structure of sklodowskite Soviet Physics Crystallography 9 217-21819640293
0015594SklodowskiteMokeeva V I (1959) The crystal structure of sklodowskite Soviet Physics Doklady 4 27-2919590293
CIF Raw Data - click here to close

Geological EnvironmentHide

Geological Setting:
Silica bearing waters acting on earlier deposited uranium minerals (uraninite)

Type Occurrence of SklodowskiteHide

Synonyms of SklodowskiteHide

Other Language Names for SklodowskiteHide

Simplified Chinese:硅镁铀矿
Traditional Chinese:矽鎂鈾礦

Relationship of Sklodowskite to other SpeciesHide

Other Members of this group:
CuprosklodowskiteCu(UO2)2(SiO3OH]2 · 6H2OTric. 1 : P1
OursiniteCo(UO2)2(SiO3OH)2 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmca

Common AssociatesHide

Associated Minerals Based on Photo Data:
14 photos of Sklodowskite associated with CuprosklodowskiteCu(UO2)2(SiO3OH]2 · 6H2O
6 photos of Sklodowskite associated with CalciteCaCO3
6 photos of Sklodowskite associated with GypsumCaSO4 · 2H2O
5 photos of Sklodowskite associated with UranophaneCa(UO2)2(SiO3OH)2•5H2O
4 photos of Sklodowskite associated with UraniniteUO2
3 photos of Sklodowskite associated with TorberniteCu(UO2)2(PO4)2 · 12H2O
2 photos of Sklodowskite associated with KasolitePb(UO2)(SiO4) · H2O
2 photos of Sklodowskite associated with Nováčekite-IMg(UO2)2(AsO4)2 · 12H2O
2 photos of Sklodowskite associated with VandenbrandeiteCu(UO2)(OH)4
2 photos of Sklodowskite associated with MalachiteCu2(CO3)(OH)2

Related Minerals - Nickel-Strunz GroupingHide

9.AK.05Soddyite(UO2)2SiO4 · 2H2OOrth.
9.AK.10CuprosklodowskiteCu(UO2)2(SiO3OH]2 · 6H2OTric. 1 : P1
9.AK.10OursiniteCo(UO2)2(SiO3OH)2 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmca
9.AK.15Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2OMon. 2 : P21
9.AK.15KasolitePb(UO2)(SiO4) · H2OMon. 2/m : P21/b
9.AK.15NatroboltwooditeNa(UO2)(SiO3OH) · H2OOrth. mmm (2/m 2/m 2/m)
9.AK.15Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2OMon. 2/m : P21/b
9.AK.15UranophaneCa(UO2)2(SiO3OH)2•5H2OMon. 2 : P21
9.AK.15Beta-UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
9.AK.25HaiweeiteCa(UO2)2[Si5O12(OH)2] · 6H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
9.AK.25MetahaiweeiteCa(UO2)2Si6O15 · nH2OMon. 2/m : P2/b
9.AK.30WeeksiteK2(UO2)2(Si5O13) · 4H2OOrth.
9.AK.30CoutinhoiteThxBa(1-2x)(UO2)2Si5O13 · (H2O)1+y (0 < x < 0.5 and 0 < y < (2+x))Orth.
9.AK.35MagnioursiliteMg4(UO2)4(Si2O5)5(OH)6 · 20H2O
9.AK.35CalcioursiliteCa4(UO2)4(Si2O5)5(OH)6 · 15H2OOrth.
9.AK.40UranosiliteUO3 · 7SiO2Orth.

Related Minerals - Dana Grouping (8th Ed.)Hide · H2OMon. 2/m : P21/b•5H2OMon. 2 : P21]2 · 6H2OTric. 1 : P1,Na)(UO2)(SiO3OH) · 1.5H2OMon. 2 : P21 · H2OOrth. mmm (2/m 2/m 2/m) · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmca[(UO2)(SiO3OH)](H2O)~2.5Mon.βCa(UO2)2(SiO3OH)2 · 5H2OMon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.16.1UranosiliteUO3 · 7SiO2Orth.
14.16.2CoffiniteU(SiO4) · nH2OTet.
14.16.3Soddyite(UO2)2SiO4 · 2H2OOrth.
14.16.5WeeksiteK2(UO2)2(Si5O13) · 4H2OOrth.
14.16.6Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2OMon. 2 : P21
14.16.7NatroboltwooditeNa(UO2)(SiO3OH) · H2OOrth. mmm (2/m 2/m 2/m)
14.16.8CuprosklodowskiteCu(UO2)2(SiO3OH]2 · 6H2OTric. 1 : P1
14.16.10UranophaneCa(UO2)2(SiO3OH)2•5H2OMon. 2 : P21
14.16.11Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2OMon. 2/m : P21/b
14.16.12HaiweeiteCa(UO2)2[Si5O12(OH)2] · 6H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
14.16.13MetahaiweeiteCa(UO2)2Si6O15 · nH2OMon. 2/m : P2/b
14.16.15SteacyiteK0.3(Na,Ca)2ThSi8O20Tet. 4/mmm (4/m 2/m 2/m) : P4/mcc
14.16.16EkaniteCa2ThSi8O20Tet. 4 2 2 : I4 2 2
14.16.17KasolitePb(UO2)(SiO4) · H2OMon. 2/m : P21/b
14.16.18OrlitePb3(UO2)3(Si2O7)2 · 6H2O
14.16.19OursiniteCo(UO2)2(SiO3OH)2 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmca

Other InformationHide

Health Risks:

References for SklodowskiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schoep, A. (1924) La Sklodowskite, nouveau minéral radioactif. Comptes rendu de l’Académie des sciences de Paris: 179: 413.
Foshag, W.F. (1925) New mineral names. American Mineralogist: 10: 132.
Gorman, D.H. (1957) Studies of radioactive compounds; IX, Sklodowskite. Canadian Mineralogist: 6: 52-60.
Mokeeva, V.I. (1964) The structure of sklodowskite. Soviet Physics - Crystallography: 9: 217-218.
Ryan, R.R., Rosenzweig, A. (1977) Sklodowskite, MgO.2UO3.2SiO2.7H2O. Crystal Structure Communications: 6: 611-615.
Stohl, F.V., Smith, D.K. (1981) The crystal chemistry of the uranyl silicate minerals. American Mineralogist: 66: 615-625.
Burns, P.C. (2005) U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.
Plášil, J. (2018): Mineralogy, crystallography and structural complexity of natural uranyl silicates. Minerals, 8, 551. [with refinement of sklodowskite]

Internet Links for SklodowskiteHide

Localities for SklodowskiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Northern Territory
    • Coomalie Shire
      • Batchelor
        • Rum Jungle
D A Berkman (1968) The geology of the Rum Jungle Uranium Deposits. Symposium on Uranium Deposits in Australia 1968 pp.12-31; Geosciences, Museums Victoria
    • West Arnhem Region
      • Kakadu
Economic Geology of Australia and papua New Guinea pp321-326
Angela Giblin (2004) Alligator Rivers Uranium deposits (Koongarra, Nabarlek and Ranger One) Northern Territory. CRC LEME; Isobe, H., Murakami, T., & Ewing, R. C. (1992). Alteration of uranium minerals in the Koongarra deposit, Australia: Unweathered zone. Journal of Nuclear Materials, 190, 174-187.
        • Ranger Mine (Ranger Uranium Mine)
Giblin, A. (2005). Alligator Rivers uranium deposits (Koongarra, Narbarlek and Ranger One), Northern Territory. Regolith Expression of Australian Ore Systems. CRC LEME, Perth, 411, 414.
Econ Geol (1987)82:1152-1168; Angela Giblin (2004) Alligator Rivers Uranium deposits (Koongarra, Nabarlek and Ranger One) Northern Territory. CRC LEME
  • Bahia
    • Brumado
      • Serra das Éguas
Cassedanne, J.P., Cassedanne, J.O. (1978) Famous mineral localities: The Brumado district, Bahia , Brazil. The Mineralogical Record: 9 : 196-205.
A.M.D.V. Chaves (2005) Mineralogia e Geoquímica Supergênicas do Urânio - Província Uranífera de Lagoa Real, Caetité-Bahia. Dissertação de Mestrado, Comissão Nacional de Energia Nuclear, 101p. (In portuguese with abstract in english)
  • Saskatchewan
    • Athabasca Basin
Knipping, H. D. (1974). The concepts of supergene versus hypogene emplacement of uranium at Rabbit Lake, Saskatchewan, Canada. IAEA-SM-183/38
WATKINSON, D.H., HESLOP, J.B. & EWERT, W.D. (1975) Nickel sulphide-arsenide assemblages associated with uranium mineralization, Zimmer Lake area, Northern Saskatchewan. Canadian Mineralogist 13, 198-204.
Shuling Zhang, Gong Chen, and Yuheng Tang (1984): Acta Sedimentologica Sinica 2(4)
Czech Republic
  • Central Bohemian Region
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
  • Karlovy Vary Region
    • Karlovy Vary District
Lapis 2002(7/8), 63-65
        • Svornost Mine (Einigkeit Mine)
Jiří Sejkora, Jakub Plášil & Bohuslav Bureš (2013): Neobvyklá asociaci supergenních minerálů uranu ze žíly Jan Evangelista, Jáchymov (Česká republika). [Unusual association of supergene uranium minerals from the Jan Evangelista vein, Jáchymov (Czech Republic)]. Bull. mineral.-petrolog. Odd. Nár. Muz. (Praha) 21, 143-156
  • Liberec Region
    • Semily District
      • Harrachov
Bradna, J., Šita, F.: Nálezy minerál na Rýžovišti u Harrachova. Opera Corcontica, 1968, 5, s. 246-247.
DR Congo (TL)
  • Haut-Katanga
    • Kambove District
      • Shinkolobwe
Stohl, Frances V., Smith, Deane K. (1981) The crystal chemistry of the uranyl silicate minerals. American Mineralogist, 66(5-6), 610-624.; 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).
    • Lubumbashi
  • Lualaba
    • Kolwezi mining district
      • Kamoto
S. Wolfsried collection
      • Kolwezi
Wilson, W. E. (2018) The Musonoi mine, Kolwezi District, Lualaba Province, Democratic Republic of the Congo. Mineralogical Record 49:236-304
  • Red Sea
    • Eastern Desert
      • Central Eastern Desert
Hussein, H. A., & Bakhit, F. S. (1988). Uranium-Bearing Alkaline Volcanics of North Wadi Kariem and Surroundings, Central Eastern Desert, Egypt. Mining Geology, 38(207), 39-48.
  • South Sinai
    • Abu Zeneima (Abu Zenima)
Bisher, A. H. (2012). Primary uranium mineralization in paleochannels of the Um Bogma formation at Allouga Southwestern Sinai. Eleventh Arab Conference on the Peaceful Uses of Atomic Energy. Khartoum. Sudan. 16-20 December 2012
  • Brittany
    • Morbihan
      • Pontivy
        • Berné
R. Pierrot, L. Chauris, C. Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.
        • Guern
Le Règne Minéral, Hors Série IV (1998)
  • Occitanie
    • Hérault
      • Lodève
        • Le Bosc
Le Règne Minéral, Hors Série IV (1998)
        • Le Puech
Caubel, A. (1997) Minéralogie du gisement d'uranium de Rabejac (Hérault). Le Règne Minéral: 13: 5-18.; Bariand, P., Bachet, B., Brassy, C., Medenbach, O., Deliens, M., Vautier, R., & Piret, P. (1993) A New Uranium Mineral from the Talmessi Mine, Iran, and Rabejac, France. Mineralogical Record: 24: 463-467; Dal Bo, F., Hatert, F., & Philippo, S. (2018). Supergene Uranyl Mineralization of the Rabejac Deposit, Lodève, France. Minerals, 8(9), 414.
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Kolitsch, U., Bayerl, R. and Topa, D. (2019): Neufunde aus der Grube Clara im mittleren Schwarzwald (V). Mineralien-Welt 30 (3), 12-27 (in German). (see also,40632.msg303314.html#msg303314)
      • Waldshut
        • St Blasien
          • Menzenschwand
Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992 Desor, J. (04/2020) SEM-EDS & Raman spectroscopy
  • Bavaria
    • Upper Franconia
      • Wunsiedel im Fichtelgebirge
        • Kirchenlamitz
          • Großschloppen
Gunnar Färber
    • Upper Palatinate
      • Schwandorf District
        • Schwarzach bei Nabburg
          • Wölsendorf
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
Dill, H. G., & Weber, B. (2010). Accessory minerals of fluorite and their implication regarding the environment of formation (Nabburg–Wölsendorf fluorite district, SE Germany), with special reference to fetid fluorite (“Stinkspat”). Ore Geology Reviews, 37(2), 65-86.
  • Rhineland-Palatinate
    • Birkenfeld District
      • Birkenfeld
        • Ellweiler
Aufschluss 69/(7+8), Lapis 79/(7+8)
  • Saxony
    • Erzgebirgskreis
      • Annaberg-Buchholz
        • Kleinrückerswalde
Desor, J. (05/2020) SEM-EDS & Raman Spectroscopy
    • Vogtlandkreis
Gröbner, J. and Kolitsch, U. (2007): The minerals of the uranium prospect at Tirpersdorf, Vogtland. Lapis 32, 37-42; 58. (in German)
  • Thuringia
    • Ronneburg U deposit
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Plaka
            • Paliokamariza Mines (Paleokamariza Mines)
Analysed by Michalis Fitros - personal communication to Gerhard Brandstetter; Simon, P. & Kapellas, K. (2017): Uranmineralien und rote Barytkristalle: Erstfund von Sklodowskit in Lavrion, Griechenland. Lapis, 42 (7-8), 58-65; Rieck, B., Kolitsch, U., Voudouris, P., Giester, G. and Tzeferis, P. (2018): Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt 29 (5), 32-77 (in German).
  • Yazd Province
    • Ardakan County
Iranmanesh, J., Rahmani, H., & Raziani, S. (2018). Geology, Mineralogy and Petrography of Rocks with Radioactive Element Mineralization in Anomaly 6 of the Khoshumi Area, Islamic Republic of Iran (No. IAEA-CN--261).
  • Fukushima Prefecture
    • Koriyama City
Matsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1–6.
  • Chihuahua
    • Aldama Municipality
      • Sierra Gomez
Peter Megaw
    • Aquiles Serdán Municipality
      • Santa Eulalia Mining District
        • West Camp
          • Francisco Portillo
Panczner(1987):220 & 284.
New Zealand
  • West Coast Region
    • Buller District
      • Westport
Christie & Brathwaite, (2000) NZ Mineral Commodity Report 19 - Beryllium, Gallium, Lithium, Magnesium, Uranium and Zirconium
  • Lower Silesian Voivodeship
    • Jelenia Góra County
Mochnacka, K., Banaś, M. (2000): Occurrence and genetic relationships of uranium and thorium mineralization in the Karkonosze-Izera Block (The Sudety Mts, SW Poland). Annales Societatis Geologorum Poloniae: 70: 137-150; Mochnacka, K., Oberc-Dziedzic, T., Mayer, W., & Pieczka, A. (2015). Ore mineralization related to geological evolution of the Karkonosze–Izera Massif (the Sudetes, Poland)—Towards a model. Ore Geology Reviews, 64, 215-238.
  • Suceava
    • Suceava district
Hîrtopanu P., Udubaşa G., Scott P., Hârtopanu I. (2004) Uranium sulphide mineralisation in the Bistriţa Mts., East Carpathians, Romania. Romanian Journal of Mineral Deposits 81:108-111
  • Andalusia
    • Almería
      • Pechina
        • Barranco Hondo
Arrufat, L., Alías, M.A., Guillén, F. y Rosillo, J.F. (2017) Revisión sobre la Presencia de Minerales de Uranio en Almería: Determinación de Sklodowskita, Macla (22), 14-15.
  • Valais
    • Saint-Maurice
      • Salvan
        • Les Marécottes
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 374.
  • Sughd
    • Khodzhent (Leninabad)
      • Kyzyltyube-Sai
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Alaska
    • Prince of Wales-Hyder Census Area
      • Ketchikan Mining District
        • Prince of Wales Island
          • Bokan Mountain
U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
  • Arizona
    • Navajo Co.
      • Petrified Forest Mining District
        • Sun Valley
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: 219.
  • California
    • San Bernardino Co.
      • Bristol Mountains
        • Amboy area
W. Wise - X-ray work at U.C. Santa Barbara
  • Colorado
    • Saguache Co.
      • Marshall Pass Mining District
Minerals of Colorado (1997) E.B. Eckel
  • Michigan
    • Gogebic Co.
      • Watersmeet
Travis Olds collection
  • New Hampshire
    • Grafton Co.
      • Grafton
No reference known. Particularly NOT mentioned in this reference! "Frondel, C., 1956, Mineral Composition of Gummite, American Mineralogist, v. 41, p. 539-568."
  • New Mexico
    • Cibola Co.
Northrop, Minerals of New Mexico, 3rd. rev. ed. (1996)
NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
    • Sierra Co.
RRUFF R050445
    • Socorro Co.
      • San Lorenzo District
Patrick Haynes
  • New York
    • Essex Co.
      • Crown Point Township
Jensen (1978) Minerals of New York State
George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. Rocks & Minerals, 82, #6, 472-483.
  • Pennsylvania
    • Carbon Co.
      • Jim Thorpe (Mauch Chunk)
Geyer, A.R., Smith, R.C. & Barnes, J.H. (1976) Mineral Collecting in Pennsylvania.
  • Utah
    • Juab Co.
UGMS Bull 117 Minerals and Mineral Localities of Utah; USGS Prof Paper 455 p57
Rocks & Minerals: 68(6): 381-393.
    • Piute Co.
      • Marysvale Mining District (Marysvale Uranium area)
UGMS Bull 117 Minerals and Mineral Localities of Utah
    • San Juan Co.
      • White Canyon
Vochten, R., Deliens, M., Medenbach, O. (2001) Oswaldpeetersite, (UO2)2CO3(OH)2·4H2O, a new basic uranyl carbonate mineral from the Jomac uranium mine, San Juan County, Utah, U.S.A.. The Canadian Mineralogist: 39(6): 1685-1689.
    • Wayne Co.
      • Fremont Mining District
        • Fruita
UGMS Bull 117 Minerals and Mineral Localities of Utah
  • Washington
    • Stevens Co.
      • Wellpinit
Cannon, B. (1975): Minerals of Washington, p.53; George E. Becraft and Paul L. Weis (1963) Geology and mineral deposits of the Turtle Lake quadrangle, Washington. USGS Bulletin 1131
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