RARE-EARTH ELEMENTS 



553 



only about one-third of the tonnage used is put in 

 solution by acids for manufacture of phosphoric 

 acid, and this is the only part of the phosphate rock 

 from which the rare earths are liberated ; thus, any 



contemplated recovery would have to be made from 

 this material. 



Many current or potential sources of rare earths 

 throughout the world are shown in table 117, to- 



Table 117. — Identified resources ' of the rare earths and some potential rare-earth deposits of the world 



Rare-earth oxides ^ 

 iry Deposit Type (tons) Remarks Rei 



United States 



Brazil 



Uruguay 

 Bolivia _. 

 U.S.S.R, 



Nigeria 



U.A.R. (Egypt) --_ 



Burundi 



Malawi 



Kenya 



Tanzania 



Zaire ( formerly 

 Republic of the 

 Congo ) . 



Malagasy Republic _.. 



India 



Ceylon 



Blind River-Elliott Lake 



St. Honore 



Mountain Pass, Calif __ 



Music Valley, Calif 



Idaho-Montana placers, 



includes Bear Valley, 



Idaho. 

 Lemhi Pass, Idaho-Mont_ 



Mineral Hill district, 



Idaho-Mont. 

 Bald Mountain, Wyo 



Wet Mountains, Colo . 



Gallinas Mountains, 

 N, Mex. 



North and South 



Carolinas, and so forth 

 (Piedmont area). 



Hilton Head Island, S.C- 



Mineville, N.Y 



Dover, N.J 



Atlantic coast beaches 



and some inland areas. 

 Morro do Ferro 



Araxa 



Atlantida 



Llallagua area 



Kola area 



Kyshtym area 



(Vishnevye Moun- 

 tain). 



Plateau Province 



Nile delta 



Karonge mine 



Kangankunde Hill .. 



Mrima (Jombo) 



Panda Hill (Mbeya) 



Glenover 



Steenskampskraal 



Shinkolobwe 



Ft. Dauphin area -_. 



Chiefly in Kerala 



Bihar and west 



Chiefly west and 

 northeast coasts. 



Conglomerate 



Carbon atite 



do 



do - 



1.200,000 



Not evaluated _ 



80,000 



5.000,000 



Thorite veins 



Carbonatite ve 

 Conglomerate 

 Thorite veins 



Beach placers — 



Magnetite deposit 



Beach and fluviatile 



placers. 

 Alkalic complex 



Carbonatite 



Beach placers 

 Veins 



Alkalic rocks, 

 placers. 



Placers 



Fluviatile placers 

 Veins 



Carbonatite and 

 residual soils. 



Alkalic complex 

 and carbonatite. 



Carbonatite 



Carbonatite 

 Vein 



Placers 



Beach placers _. 

 Alluvial placers 

 Beach placers _. 



Not evaluated _ 

 15.000 

 1,750 



Not evaluated _ 

 600,000 



do 



180,000 



300.000 



90,000 



288 



Not evaluated _ 



6,800,000 



-do 



120,000 



Not reported __ 



68,000 



300,000 

 Not reported __ 



9,000 

 Not reported __ 



60,000 



3.000.000 



6,000 



Potential byproduct of 

 U; some has been 

 produced. 



Potential byproduct of 

 Nb. 



do 



Reserve in bastnaesite 



Potential coproduct Th 



Monazite, thorite, 



ancylite. 

 Monazite 



Potential coproduct Th_ 



Bastnaesite with 



fluorite. 

 Monazite, minor xenotime 



in numerous scattered 



deposits. 



Monazite 



Rare-earths in apatite, 



minor bastnaesite. 

 Bastnaesite, doverite, 



xenotime. 

 Monazite 



Allanite, bastnaesite 



Potential byproduct Nb 

 and apatite(7). 



Monazite. Represents 

 one sampled area. 



Monazite, minor xeno- 

 time in tin veins. 



Apatite, loparite. Ton- 

 nage based on poten- 

 tial byproduct from 

 apatite processing. 



Apatite, cerite, bast- 

 naesite, allanite. 

 Apatite contains 0-29- 

 3.3 percent rare 

 earths. 



Small production from 

 tin placers. 



Monazite. Intermittent 

 production. 



Bastnaesite. Intermittent 

 production. 



Monazite 



Monazite; pyrochlore 



Potential byproduct Nb 

 and apatite. 



Synchisite, monazite — 



Monazite. Has had large 



production. 

 Monazite 



do 



Monazite. Tonnage 

 given is from one 

 northeast coast de- 

 posit. 



Shenk (1971); 



Griffith and Roscoe 



(1964). 

 Rowe (1958): U.S. 



Bur. Mines (1963). 

 Vallee and Dubuc 



(1970). 

 Parker (1965). 



Evans (1964). 

 Eilertsen and Lamb 

 (1956). 



U.S. Atomic Energy 

 Commission 

 (1969); Staatz and 

 others (1972). 



Anderson (1958). 



Borrowman and 



Rosenbaum (1962). 

 Christman and 



others (1959); 



Staatz and Conklin 



(1966). 

 Olson and Wallace 



(1956): J. C. 

 Olson (unpub. 



data). 

 Perhac and Heinrich 



(1964). 

 Overstreet and others 



(1959). 



McCauley (1960). 

 McKeown and 



Klemic (1956). 

 Klemic and others 



(1962). 

 Parker (1965). 



Roser and others 

 (1964). 

 Do. 



Bogert (1959). 



Gordon (1944). 



British Sulphur 

 Corporation, Ltd. 

 (1971). 



Zil'bermints (1929); 

 Ganzeev and others 

 (1966), 



Mackay and others 



(1949). 

 Higazy and Naguib 



(1958). 

 Thoreau and others 



(1958). 

 Deans (1966). 



Do. 



Fawley and James 

 (1955); Davidson 

 (1956); Fick and 

 Van der Heyde 

 (1959). 



Verwoerd (1963). 



Pike (1958); U.S. 



Bur. Mines (1964). 

 Derriks and Vaes 



(1956). 



Murdock (1963). 

 Wadia (1956). 

 Parker (1965). 

 Davidson (1956). 



See footnotes at end of table. 



