Thorium Ore

Thorium Ore


the conventional name for any of the natural mineral formations containing thorium in compounds and concentrations that make commercial use technically feasible and economically practical. Deposits of thorium itself are unknown; the element is extracted as a by-product of the dressing of complex ores. Here, Th is extracted together with Nb, Ta, Zr, U, and rare-earth elements. The content of Th varies in such ores from hundredths to tenths of a percent. The principal thorium-bearing minerals are monazite (3.5–10 percent ThO2), thorite (up to 77 percent ThO2), and thorianite (Th, U)O2 (45–93 percent). The minerals bearing thorium in the ores include silicates, simple and multiple oxides (titanotantaloniobates), phosphates, and carbonates; thorium is present in these minerals as an isomorphous admixture.

A distinction is made between endogenous and exogenous thorium deposits. The endogenous group includes magmatic, pegmatite, carbonatite, albitite, skarn, and hydrothermal deposits, all of which are related to alkalic magmatic rocks. The largest pegmatite deposits are in the vicinity of Bancroft, Canada. A significant thorium-bearing rare-earth carbonatite deposit is located in Mountain Pass, Calif. The maximum content of thorium (3–6 percent) is found in the rare-earth hydrothermal deposits at Steenkampskraal, in the Republic of South Africa. Exogenous deposits include various types (eluvial, alluvial, coastal) of monazite placers, some of which are buried. The exogenous deposits constitute the major source of thorium. The largest coastal deposits are in India (with monazite content in the sand averaging 0.75 percent) and Brazil (2–5 percent).


Geologiia postmagmaticheskikh torievo-redkometal’nykh mestorozhdenii. Moscow, 1972.


References in periodicals archive ?
Mining and refining thorium ore is simpler and cleaner than mining and refining uranium ore.
Ores BH-1 Tungsten ore CD-1 Antimony ore CH-3 Gold-bearing sulfide ore CT-1 Tungsten ore HV-1 Copper-molybdenum ore KC-1a Zinc-lead-tin-silver ore MA-1b Gold ore MA-2b Gold ore MA-3 Gold ore MP-1a Zinc-tin-copper-lead ore MP-2 Tungsten-molybdenum ore MW-1 Iron ore OKA-1 Niobium ore OKA-2 Rare-earth - thorium ore PR-1 Molybdenum ore PTA-1 Platiniferous black sand SCH-1 Iron ore SU-1a Nickel-copper-cobalt ore TAN-1 Tantalum ore TLG-1 Tungsten ore
Thorium Minerals Yearbook reflects a sharp increase in United States thorium ore reserves existing on properties currently held by Thorium Energy, Inc.
latest estimate of 915,000 tons of thorium ore reserves within the claims held by Thorium Energy, Inc.
This trip holds a lot of potential for Novastar, because IREL is well regarded in the field of separating and refining Thorium ore from Monazite and India is fully committed to the utilization of Thorium as a primary energy source," said Pamnani.
The Getty analysis of Thorium ore was performed by creating and sampling two depth chart zones, known as Anomalous Bands.
OTCBB:CBNK) The definitive agreement outlining the structure of the acquisition of an Australian property, containing Thorium ore ("Rare Earth Metals") has now been signed by all parties.
The drilling data indicates that there's a good probability of economically viable grades of Thorium ore, retrievable at shallow depths.
The Industrial market report offers a comprehensive guide to the size and shape of the Mining of Uranium and Thorium Ores market at a national level.
Furthermore, although the list exempted mining of many materials, it specifically omitted the mining of uranium and thorium ores, two materials commonly used as nuclear fuel.
As early as 1905 he had noted that lead was always present in uranium and thorium ores.
believes that company's identified, economically extractable and accessible deposits of high grade thorium ores are large enough to supply the power needs of the entire U.