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- Occurrence_of_thorium abstract "Thorium is found in small amounts in most rocks and soils; it is three times more abundant than tin in the Earth's crust and is about as common as lead. Soil commonly contains an average of around 6 parts per million (ppm) of thorium. Thorium occurs in several minerals including thorite (ThSiO4), thorianite (ThO2 + UO2) and monazite. Thorianite is a rare mineral and may contain up to about 12% thorium oxide. Monazite contains 2.5% thorium, allanite has 0.1 to 2% thorium and zircon can have up to 0.4% thorium. Thorium-containing minerals occur on all continents. Thorium is several times more abundant in Earth's crust than all isotopes of uranium combined and thorium-232 is several hundred times more abundant than uranium-235.Thorium concentrations near the surface of the earth can be mapped using gamma spectroscopy. The same technique has been used to detect concentrations on the surface of the Moon; the near side has high abundances of relatively thorium-rich KREEP, while the Compton–Belkovich Thorium Anomaly was detected on the far side. Martian thorium has also been mapped by 2001 Mars Odyssey.232Th decays very slowly (its half-life is comparable to the age of the universe) but other thorium isotopes occur in the thorium and uranium decay chains. Most of these are short-lived and hence much more radioactive than 232Th, though on a mass basis they are negligible.".
- Occurrence_of_thorium thumbnail NAMrad_Th_let.gif?width=300.
- Occurrence_of_thorium wikiPageID "43645192".
- Occurrence_of_thorium wikiPageLength "14130".
- Occurrence_of_thorium wikiPageOutDegree "55".
- Occurrence_of_thorium wikiPageRevisionID "674764561".
- Occurrence_of_thorium wikiPageWikiLink 2001_Mars_Odyssey.
- Occurrence_of_thorium wikiPageWikiLink Acre.
- Occurrence_of_thorium wikiPageWikiLink Allanite.
- Occurrence_of_thorium wikiPageWikiLink Andhra_Pradesh.
- Occurrence_of_thorium wikiPageWikiLink Australia.
- Occurrence_of_thorium wikiPageWikiLink Bihar.
- Occurrence_of_thorium wikiPageWikiLink Category:Thorium.
- Occurrence_of_thorium wikiPageWikiLink Compton–Belkovich_Thorium_Anomaly.
- Occurrence_of_thorium wikiPageWikiLink Conway_granite.
- Occurrence_of_thorium wikiPageWikiLink Cubic_metre.
- Occurrence_of_thorium wikiPageWikiLink Demand.
- Occurrence_of_thorium wikiPageWikiLink Far_side_of_the_Moon.
- Occurrence_of_thorium wikiPageWikiLink Gamma_spectroscopy.
- Occurrence_of_thorium wikiPageWikiLink Geoscience_Australia.
- Occurrence_of_thorium wikiPageWikiLink Half-life.
- Occurrence_of_thorium wikiPageWikiLink Idaho.
- Occurrence_of_thorium wikiPageWikiLink India.
- Occurrence_of_thorium wikiPageWikiLink Isotope.
- Occurrence_of_thorium wikiPageWikiLink Isotopes_of_uranium.
- Occurrence_of_thorium wikiPageWikiLink KREEP.
- Occurrence_of_thorium wikiPageWikiLink Kerala.
- Occurrence_of_thorium wikiPageWikiLink Leaching_(chemistry).
- Occurrence_of_thorium wikiPageWikiLink Lead.
- Occurrence_of_thorium wikiPageWikiLink Lemhi_Pass.
- Occurrence_of_thorium wikiPageWikiLink Mars.
- Occurrence_of_thorium wikiPageWikiLink Mineral.
- Occurrence_of_thorium wikiPageWikiLink Mineral_rights.
- Occurrence_of_thorium wikiPageWikiLink Monazite.
- Occurrence_of_thorium wikiPageWikiLink Montana.
- Occurrence_of_thorium wikiPageWikiLink Near_side_of_the_Moon.
- Occurrence_of_thorium wikiPageWikiLink New_Hampshire.
- Occurrence_of_thorium wikiPageWikiLink Odisha.
- Occurrence_of_thorium wikiPageWikiLink Parts-per_notation.
- Occurrence_of_thorium wikiPageWikiLink Parts_per_million.
- Occurrence_of_thorium wikiPageWikiLink Rare_earth_element.
- Occurrence_of_thorium wikiPageWikiLink Soil.
- Occurrence_of_thorium wikiPageWikiLink Springer_Science+Business_Media.
- Occurrence_of_thorium wikiPageWikiLink Sq_km.
- Occurrence_of_thorium wikiPageWikiLink Square_kilometre.
- Occurrence_of_thorium wikiPageWikiLink Tamil_Nadu.
- Occurrence_of_thorium wikiPageWikiLink Telangana.
- Occurrence_of_thorium wikiPageWikiLink Thorianite.
- Occurrence_of_thorium wikiPageWikiLink Thorite.
- Occurrence_of_thorium wikiPageWikiLink Thorium.
- Occurrence_of_thorium wikiPageWikiLink Thorium_fuel_cycle.
- Occurrence_of_thorium wikiPageWikiLink Tin.
- Occurrence_of_thorium wikiPageWikiLink Tonne.
- Occurrence_of_thorium wikiPageWikiLink United_States.
- Occurrence_of_thorium wikiPageWikiLink V._Narayanasamy.
- Occurrence_of_thorium wikiPageWikiLink West_Bengal.
- Occurrence_of_thorium wikiPageWikiLink Zircon.
- Occurrence_of_thorium wikiPageWikiLink File:India-locator-map-thorium2012.svg.
- Occurrence_of_thorium wikiPageWikiLink File:Lunar_Thorium_concentrations.jpg.
- Occurrence_of_thorium wikiPageWikiLink File:NAMrad_Th_let.gif.
- Occurrence_of_thorium wikiPageWikiLinkText "Thorium".
- Occurrence_of_thorium wikiPageWikiLinkText "occurrence of thorium".
- Occurrence_of_thorium hasPhotoCollection Occurrence_of_thorium.
- Occurrence_of_thorium wikiPageUsesTemplate Template:Cite_book.
- Occurrence_of_thorium wikiPageUsesTemplate Template:E.
- Occurrence_of_thorium wikiPageUsesTemplate Template:Legend.
- Occurrence_of_thorium wikiPageUsesTemplate Template:Reflist.
- Occurrence_of_thorium wikiPageUsesTemplate Template:Sfn.
- Occurrence_of_thorium subject Category:Thorium.
- Occurrence_of_thorium hypernym Times.
- Occurrence_of_thorium type Person.
- Occurrence_of_thorium comment "Thorium is found in small amounts in most rocks and soils; it is three times more abundant than tin in the Earth's crust and is about as common as lead. Soil commonly contains an average of around 6 parts per million (ppm) of thorium. Thorium occurs in several minerals including thorite (ThSiO4), thorianite (ThO2 + UO2) and monazite. Thorianite is a rare mineral and may contain up to about 12% thorium oxide.".
- Occurrence_of_thorium label "Occurrence of thorium".
- Occurrence_of_thorium sameAs m.011qdw7h.
- Occurrence_of_thorium sameAs Q18355932.
- Occurrence_of_thorium sameAs Q18355932.
- Occurrence_of_thorium wasDerivedFrom Occurrence_of_thorium?oldid=674764561.
- Occurrence_of_thorium depiction NAMrad_Th_let.gif.
- Occurrence_of_thorium isPrimaryTopicOf Occurrence_of_thorium.