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Bureau of Mines / Minerals yearbook: Metals and minerals 1978-79
Year 1978-79, Volume 1 (1978-1979)

Moore, Christine M.
Rare-earth minerals and metals,   pp. 735-742 PDF (915.0 KB)


Page 735

  735Rare-Earth Minerals and 
Metals 
By Christine M. Moore1 
 Domestic production of rare-earth oxide (REO) contained in bastnäsite
and monazite increased sharply in 1979, due primarily to the sizeable increase
in bastnäsite production. Molycorp, Inc., and W. R. Grace &
Co.
were the principal processors of rare earths in 1978 and 1979. Petroleum
catalysts and metallurgical applications were the major end uses both years.
 Legislation and Government Programs.—Shipments of rare earths
from
the U.S. General Services Administration totaled 2,973 short tons REO in
1978 and 1,226 short tons REO in 1979. Stocks of REO contained in sodium
sulfate, an interinedi 
ate product in the processing of monazite, totaled 505 tons at yearend 1979.
Government stocks of yttrium oxide remained unchanged at 237 pounds. 
 The Tokyo Round of negotiations was completed in 1979, resulting in new
tariff agreements between the developed nations of the world. The agreements,
which affected rare-earth tariffs, placed most nations on a most-favored-nation
status with generally lower rates to be phased in, or staged, over an 8-year
period beginning Jan. 1, 1980. The new rare-earth tariff schedule is shown
in table 1. 
Table 1.—U.S. import duties 
Tariff 
classification 
. 
Artic e 
Most favored 
nation (MFN) 
Non-MFN 
Jan. 1, 1980 
Jan. 1, 1987 
Jan. 1, 1980 
601.12, 601.45 
Ore and concentrate              
Free 
Free 
Free. 
418.40, 418.42, 
418.44 
Cerium chloride, oxide, compounds — — — 
14% ad valorem 
7.2% ad valorem 
35% ad valorem. 
423.003 - — - — 
Rare-earth oxides except cerium oxide — 
4.8% ad valorem 
3.7% ad valorem 
25% ad valorem. 
632.38  
632.78  
Rare-earth metals (including scandium and yttrium) 
Alloys wholly or almost wholly of rare- 
4.8% ad valorem 
47 cents per 
3.7% ad valorem 
32 cents per 
25% ad valorem. 
$2 per pound. 
632.79      
earth metals (mischmetal) 
Other alloys wholly or almost wholly of rare-earth metals 
pound 
46 cents per pound plus 5.6% ad valorem 
pound 
20 cents per pound plus 2.4% ad valorem 
$2 per pound plus 25% ad valorem. 
755.35      
Ferrocerium and other pyrophoric alloys 
46 cents per pound plus 5.6% ad valorem 
22 cents per pound plus 2.6% ad valorem 
$2 per pound plus 25% ad valorem. 


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