Uranothorite
A variety of Thorite
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About Uranothorite
Formula:
(Th,U)SiO4
A U-bearing variety of thorite.
Unique Identifiers
Mindat ID:
8611 (as Uranothorite)
3946 (as Thorite)
3946 (as Thorite)
Long-form identifier:
mindat:1:1:8611:6 (as Uranothorite)
mindat:1:1:3946:4 (as Thorite)
mindat:1:1:3946:4 (as Thorite)
Chemistry of Uranothorite
Mindat Formula:
(Th,U)SiO4
Element Weights:
Elements listed:
Synonyms of Uranothorite
Other Language Names for Uranothorite
Varieties of Uranothorite
| Uranohydrothorite | Possibly a hydrous uranium-bearing thorite. |
Common Associates
Associations Based on Photo Data:
| 9 photos of Uranothorite associated with Thorite | Th(SiO4) |
| 8 photos of Uranothorite associated with Diopside | CaMgSi2O6 |
| 4 photos of Uranothorite associated with Zircon | Zr(SiO4) |
| 4 photos of Uranothorite associated with Titanite | CaTi(SiO4)O |
| 4 photos of Uranothorite associated with Amphibole Supergroup | AB2C5(T8O22)W2 |
| 2 photos of Uranothorite associated with Magnetite | Fe2+Fe3+2O4 |
| 2 photos of Uranothorite associated with Pyroxene Group | ADSi2O6 |
| 2 photos of Uranothorite associated with Fluorite | CaF2 |
| 1 photo of Uranothorite associated with Microcline | K(AlSi3O8) |
| 1 photo of Uranothorite associated with Graphite | C |
Radioactivity
Other Information
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 Uranothorite
mindat.org URL:
https://www.mindat.org/min-8611.html
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References for Uranothorite
Reference List:
Ellsworth, H. V. (1927) I. Uranothorite from the MacDonald Mine, Hybla, Ontario. American Mineralogist, 12 (10) 368-372
KIMURA, Kenjiro, MIYAKE, Yasuo (1932) On Enalite, a New Variety of Uranothorite, Found in Naegi, Gifu Prefecture. NIPPON KAGAKU KAISHI, 53. 93-100 doi:10.1246/nikkashi1921.53.93
Phair, George, Shimamoto, Kiyoko Onoda (1952) Hydrothermal uranothorite in fluorite breccias from the Blue Jay mine, Jamestown, Boulder County, Colorado. American Mineralogist, 37 (7-8) 659-666
Nagashima, Otokichi, Sakurai, Kin-ich (1955) Uranothorite from Kamiotomo, Iwate Prefecture. Journal of the Mineralogical Society of Japan, 2 (3) 210-211 doi:10.2465/gkk1952.2.210
Robinson, Stephen Clive; Abbey, Sydney (1957) Uranothorite from eastern Ontario. The Canadian Mineralogist, 6 (1). 1-14
Hewett, D. F., Stone, Jerome (1957) Uranothorite near Forest Home, San Bernardino County, California. American Mineralogist, 42 (1-2) 104-107
KATO, TOSHIO (1960) Uranothorite from Naégi, Gifu Prefecture. Mineralogical Journal, 3 (2). 90-95 doi:10.2465/minerj1953.3.90
Costin, D. T.; Mesbah, A.; Clavier, N.; Dacheux, N.; Poinssot, C.; Szenknect, S.; Ravaux, J. (2011) How To Explain the Difficulties in the Coffinite Synthesis from the Study of Uranothorite? Inorganic Chemistry, 50 (21). p.11117-11126. doi:10.1021/ic2016758
Clavier, Nicolas, Szenknect, Stéphanie, Costin, Dan Tiberiu, Mesbah, Adel, Ravaux, Johann, Poinssot, Christophe, Dacheux, Nicolas (2013) Purification of uranothorite solid solutions from polyphase systems. Journal of Nuclear Materials, 441 (1). 73-83 doi:10.1016/j.jnucmat.2013.05.032
Cottle, J. M. (2014) In-situ U-Th/Pb geochronology of (urano)thorite. American Mineralogist, 99 (10) 1985-1995 doi:10.2138/am-2014-4920
Baron, Fabien, Robin, Valentin, Beaufort, Daniel, Szenknect, Stéphanie, Dacheux, Nicolas, Petit, Sabine (2014) Use of near Infrared Spectroscopy for the Identification of Coffinite and Uranothorite. Journal of Near Infrared Spectroscopy, 22 (2) 149-152 doi:10.1255/jnirs.1110
Guo, Xiaofeng, Szenknect, Stéphanie, Mesbah, Adel, Clavier, Nicolas, Poinssot, Christophe, Wu, Di, Xu, Hongwu, Dacheux, Nicolas, Ewing, Rodney C., Navrotsky, Alexandra (2016) Energetics of a Uranothorite (Th1–xUxSiO4) Solid Solution. Chemistry of Materials, 28. 7117-7124 doi:10.1021/acs.chemmater.6b03346
Localities for Uranothorite
Showing 207 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Algeria | |
| Oulebsir et al. (2021) |
| Kesraoui et al. (2002) | |
| Kesraoui et al. (2002) |
Argentina | |
| Urbina Nilda |
Australia | |
| Drake-Brockman (1995) |
| Domnick +2 other references |
| Ehrig et al. (2012) |
| Habibi et al. (2025) |
Austria | |
| Strasser (1989) |
| Strasser (1989) | |
| Strasser (1989) | |
Bangladesh | |
| Hasan et al. (2022) |
Canada | |
| Peatfield (n.d.) |
| Peatfield (n.d.) | |
| Peatfield (n.d.) | |
| Peatfield (n.d.) | |
| Peatfield (n.d.) |
| ... +1 other reference |
| Econ Geol (1984) |
| Robertson (1976) | |
| Ontario Ministry of Northern ... |
| Pouliot et al. (1964) +1 other reference | |
| Sabina (1986) | |
| Sabina (1986) | |
| Sabina (1986) | |
| Ontario MDI Number: MDI31D16NE00032 | |
| Sabina (1986) | |
| Sabina (1986) | |
| Sabina (1986) | |
| Sabina (1986) | |
| Sabina (1986) | |
| Sabina (1986) | |
| Sabina (1986) |
| Ontario Geological Survey Miscellaneous ... +2 other references |
| Sabina (1986) +1 other reference | |
| Sabina (1986) | |
| geological survey of canada economic ... +1 other reference | |
| Pegmatite showing is exposed by an ... |
| Sabina (1986) | |
| Ontario Ministry of Northern ... |
| Ontario Ministry of Northern ... | |
| Donald F. Hewitt 1967 |
| www.geologyontario.mndm.gov.on.ca (n.d.) | |
| Ontario MDI Number: MDI31F04SW00036 +1 other reference |
| Traill (1970) | |
| Hewitt (1967) +2 other references | |
| Masson S.L. and Gordon J.B. (1981) |
| Hewitt (1967) +1 other reference | |
| www.geologyontario.mndm.gov.on.ca (n.d.) | |
| D.F Hewitt (1954) | |
| ref.: D.F. Hewitt (1954) | |
| www.geologyontario.mndm.gov.on.ca (n.d.) | |
| Sabina (1986) |
| Sabina (1991) |
| MDI Number: MDI000000000622 |
| Satterly (1956) |
| www.geologyontario.mndm.gov.on.ca (n.d.) |
| Sabina (1986) |
| R.J Traill 1983 +1 other reference |
| Masson S.L. and Gordon J.B. (1981) |
| Ontario Ministry of Northern ... | |
| www.geologyontario.mndm.gov.on.ca (n.d.) |
| MDI Number: MDI31F07NE00060 |
| Robertson (1976) |
| Sabina (1986) |
| M et al. (1971) +1 other reference |
| SIGEOM systeme d'information geominiere ... |
| Sabina (1971) +1 other reference | |
| Sabina (2007) |
| Rich et al. (1977) |
| Hogarth (1957) | |
Chad | |
| Olivier et al. (2021) |
China | |
| Xin Xiong et al. (2013) |
| Zhong et al. (2022) |
| Lai et al. (2026) | |
| Dazhong Xu et al. (1999) |
| Zhu et al. (2024) |
| Chen et al. (2022) |
| Yi-Li et al. (2023) |
| Rock and Mineral Museum of the Institute of Geology (1979) | |
| Bonnetti et al. (2015) |
| Rengui Wu and Dagan Yu (2000) +1 other reference |
| Yanning Meng and Honghai Fan (2013) | |
| Rengui Wu and Dagan Yu (2000) |
| Dahlkamp (2009) +1 other reference | |
| Yu et al. (2023) | |
| Li et al. (2024) |
| Rucheng Wang et al. (2003) |
| - (1978) |
| Wu et al. (2021) +1 other reference |
| Xiaochao Hui (2014) +2 other references |
| Song et al. (2020) |
| Congde Chen and Guangping Pu (1991) |
| Chen Zhangru et al. (1990) |
Czech Republic | |
| Radková et al. (2021) |
Egypt | |
| Mohamed (2013) |
| Mahmoud et al. (2018) |
| Alekseev et al. (2023) |
| Küster (2009) | |
| Emad et al. (2022) | |
| JKAU: Earth Sci. et al. (2008 A.D. / 1429 A.H.) |
| Raslan et al. (2010) | |
| Ghoneim et al. (2024) | |
| El Aref et al. (2020) +1 other reference | |
| Abed et al. (2022) | |
| Abd El-Naby (2009) +1 other reference | |
| Saleh et al. (2026) | |
| Gaafar et al. (2022) | |
| Ismail (2017) +1 other reference | |
| Ali et al. (2021) | |
| Shalan (2021) |
| Yehia H. Dawood (2011) +1 other reference | |
| Hamdy et al. (2011) | |
| Fawzy et al. (2022) | |
| Abdel Gawad et al. (2022) |
| Ali et al. (2020) +2 other references |
| Sallam (2020) |
| Abd El-Moghny et al. (2026) | |
| Sallam et al. (2019) | |
Finland | |
| Jyrki Autio photo & collection (SEM-EDS) |
France | |
| De Ascençao Guedes et al. (2000) |
| Bull. Minéral. |
Germany | |
| Walenta (1992) |
Greenland | |
| Petersen (2001) |
Guyana | |
| USGS Bulletin 2062 |
India | |
| Raju et al. (2003) |
| Kumar et al. (2000) |
| Bhattacharya et al. (2007) | |
Indonesia | |
| Zglinicki et al. (2021) |
| Hutton (1954) |
Iraq | |
| Mohammad et al. (2016) +1 other reference |
Italy | |
| Knuever et al. (2023) |
| |
Japan | |
| Imaoka et al. (2024) |
| abstract in Am. Min. 18 +1 other reference |
| ... |
Madagascar | |
| Besaire (1966) |
| Lacroix (1922) +1 other reference |
| Deditius et al. (2012) |
Mauritania | |
| Livrable 87 +1 other reference |
Morocco | |
| Tuduri et al. (2018) |
Namibia | |
| Chen et al. (2025) |
| Swakop Uranium | |
New Zealand | |
| Hutton et al. (7) |
| Pabst et al. (1951) |
North Korea | |
| Iimori Satoyasu analysis |
| Iimori (1944) |
Norway | |
| Farges et al. (1991) |
| Brøgger (1890) | |
| Brøgger (1890) |
| Gleditsch et al. (1932) | |
| Zhou et al. (2026) |
| Zhou et al. (2026) | |
| Kristiansen (2022) |
| Steffenssen (2018) |
Poland | |
| Mochnacka et al. (2000) +1 other reference |
| Lis et al. (1986) | |
| Lis et al. (1986) |
| Mochnacka et al. (2000) +2 other references | |
Romania | |
| HÎRTOPANU et al. (2014) |
Russia | |
| Savel'eva V.B. Karmanov N.S. (2008) +1 other reference |
| Korostelev et al. (2016) |
| Pavel M. Kartashov analytical data (2012) |
Slovakia | |
| Huraiová et al. (2019) |
| Uher et al. (Považský Inovec) |
South Africa | |
| Econ Geol. (1995) |
| Cairncross et al. (1995) | |
South Korea | |
| Shin et al. (2016) |
Sweden | |
| Troëng (1982) |
| Thulin (1996) |
| Fullerton (2014) |
| Smellie (1985) |
USA | |
| - (2008) |
| - (2008) | |
| - (2008) | |
| - (2008) | |
| - (2008) | |
| - (2008) | |
| - (2008) | |
| von Backstrom (1974) +2 other references | |
| - (2008) | |
| - (2008) |
| - (2008) | |
| - (2008) | |
| Adams (1969) +1 other reference |
| Frondel (1958) +1 other reference |
| Neuerburg (1954) |
| Sharp (1959) +2 other references |
| American Mineralogist (1957) | |
| Hewett et al. (1957) +1 other reference |
| Hewett et al. (1957) +3 other references | |
| Walker et al. (1956) +1 other reference |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Castor et al. (2004) |
| Castor et al. (2004) |
| Ross (1961) | |
| Northrop et al. (1996) |
| Northrop et al. (1996) |
| Jensen (1978) |
| Jensen (1978) |
| Januzzi et al. (1976) |
| Paris (2011) |
| Dietrich (1990) |
| Hall et al. (2022) |
Zimbabwe | |
| Gallagher (1967) |
MacDonald Mine, Monteagle Township, Hastings Highlands Municipality, Hastings County, Ontario, Canada