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

Rowland, T. John, Jr.; Cammarota, V. A., Jr.
Antimony,   pp. 63-70 PDF (797.4 KB)

Page 64

duction of antimony to 299 tons, compared with 207 tons in 1978. The Sunshine
Mining Co. operated the Sunshine mine in the Coeur d'Alene district of Idaho
and produced 423 tons of antimony, a decrease of 168 tons from the 1978 output.
Antimony was produced as a byproduct of the treatment of tetrahedrite, a
complex silver-copperantimony sulfide, one of the principal ore minerals
in the Kellogg, Idaho, area. In 
June 1979, a 19% stock interest in Sunshine 
Holdings Corp. was sold to Arab Investors 
Group SA, a Luxembourg corporation. Antimony was also produced as a byproduct
in smelting primary lead from domestic concentrates. The total antimony supply
from domestic mines was 1,337 tons in 1978 and 930 tons in 1979. Two primary
lead refiners reported production in 1978 and 
Table 2.—Antimony mine production and shipments in the United States
(Short tons) 
Antimony Antimony 
concentrate Produced Shipped 
 1975 4,505 886 966 
 1976 1,111 283 310 
 1977 3,496 610 534 1978 4,231 798 863 
 1979 3,294 722 701 
SMELTER PRODUCTION M&T Chemicals Inc., Baltimore, Md.; and 
 McGean Chemical Co., Inc., Cleveland, 
 Prirnary.—Production of primary SIlti Ohio. Producers of antimony
metal included mony products m 1979 was the highest smce Sunshine Mining
Co., Kellogg, Idaho, and 1974. Metal production increased after 2 
years of decline, and the production of USAC at Thompson Falls, Mont., which
also produced sodium antimonate. 
antimony oxide remamed strong. The production of metal more than doubled
in 1978 Secondary—Production of antimony 
with the reopening of the expanded Laredo, from secondary sources decreased
in 1978 Tex., smelter which Anzon America Inc. from that of 1977. Data were
not available bought from NL Industries. ASARCO Incor- for 1979. Secondary
smelters recovered porated produced and sold a small amount 22,371 tons,
primary smelters recovered 73 of metal in 1979 from its new smelter in El
tons, and manufacturers and foundries rePaso, Tex., but mechanical problems
pro covered the remaining 4,012 tons. Old scrap, Cluded full-scale operation.
ASARCO began predominantly battery plates, was the full production at its
Omaha, Nebr., anti- source of most of the secondary output; new mony oxide
plant in early 1979. The plant, scrap, mostly in the form of drosses and
built at a cost of approximately $2.2 million, residues from various sources,
supplied the has a rated capacity of 225 tons of antimony remainder. The
antimony content of scrap oxide per month and utilizes an enclosed is usually
recovered and consumed as anti- 
and automated process. monial lead with removal or addition of 
The major producers of antimony oxide antimony as required in the refining
were Harshaw Chemical Co., Gloucester to meet specifications for various
City, N.J.; Chemetron Corp., La Porte, Tex.; nial lead alloys. 
Table 3—Primary antimony produced in the United States 
(Short tons of antimony content) 
Class of material produced 
 Byproduct Total 
Metal Oxide Residues antimonial 
1975 —- 3,254 7,890 595 450 12,1891976 —- 3,102 10,628
191 697
14,6181977 1,877 9,907 277 766 12,8271978 —- 1,108 12,117 184 701
—- 2,642 12,141 —— 279 15062 

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