Bureau of Mines / Minerals yearbook metals, minerals, and fuels 1972
Year 1972, Volume 1 (1972)
DeHuff, Gilbert L.
Manganese, pp. 757-769 ff. PDF (1.5 MB)
764 MINERALS YEARBOOK, 1972 Table 9.—Manganese ore: World production by country i—Continued (Short tons) Country % Mn 1970 1971 1972 ~ Asia—Continued Pakistan Philippines Thailand Turkey Oceania: Australia Fiji New Hebrides Total NA 52 46—50 35+ 46 30—50 43—44 13 5,645 26,310 ' 15,789 ' 827,561 27,054 16,926 100 5,658 15,412 14,222 1,157,703 8,440 16,537 140 2,746 21,883 16,620 1,330,795 31,137 r20,086,545 23,169,672 22,832,290 Estimate. e Preliminary. ' Revised. I In addition to the countries listed, Cuba and South-West Africa also produce manganese ore but information is inadequate to make reliable estimate of output levels. Low grade ore not included in the table has been reported as follows in short tons: Czechoslovakia (about 17% Mn) 1970—95,000; 1971—53,000; 1972—' 44,000; Romania (about 22% Mn) about 140,000 in each year; Republic of South Africa (15—30% Mn, in addition to material listed in table) 1970—412,264; 1971—200,220; 1972—112,058. 2 Estimated on the basis of reported contained manganese. Exports. Grade unreported. Source: The National Economy of the U.S.S.R., Central Statistical Administration. Moscow. ' Of total 1972 output, 42.4% graded from 35% to 54% Mn. (Comparable 1970 and 1971 production breakdown not available; export figures give 43% and 33% respectively.) 6 Iranian calendar year beginning March 21, of year stated; all figures apparently are mine run ore. Angola.—No manganiferous iron ore was produced in 1972. Reported manganese ore production ' for 1971 was from the mines of Companhia do Manga'nês de Angola. Exports have been chiefly to Japan but totaled only 12,400 short tons in 1971 compared with 22,600 tons in l~70. Argentina.—Decree 8203, published in November 1972, restricts manganese ore imports, establishes guidelines for the sale of manganese ore in Argentina, and fixes the prices to be charged. The purpose is to assure a market for all domestically produced manganese ore, which has had to compete since ' 1970 with Brazilian ore under LAFTA (Latin American Free Trade Association) accords. Because most Argentine mines are small, operate with little benefit of technology, and generally mine ore of poor quality, the costs are high. The decree gives the Ministry of Industry and Mining a year to prepare final plans for the installation of a concentration plant. Manganese ore produced in 1971 averaged 26.58% manganese. Total exports of rhodochrosite in 1971 were 103 short tons, valued at $172,000. The United States received 15 tons. Imports of manganese ore in 1971 totaled 25,000 tons. Bolivia.—The small quantity of manganese ore produced (exported) in 1971 averaged 28% manganese. Botswana.—Shipping reports submitted to the Botswana Geological Survey for 1971 showed that the manganese ore from the Lobatse South mine of Marble Lime & Associated Industries Ltd. averaged approximately 46% manganese dioxide, whereas that from the Kanye mine of Anglo American Corp. of South Africa Ltd. ranged from 45% to 68% manganese dioxide. Production for that year from the Kanye mine was about three times that from Lobatse South. The latter is located on the Transvaal border and is an extension of an operation on the Transvaal side of the border. It apparently operates sporadically on a small scale. The Kanye mine closed early in 1972; high transportation costs from mine to railhead at Lobatse were a factor in the closing. The manganese-producing areas of Botswana are heavily faulted and production has varied widely in grade. Brazil.—The new pellet plant of Inddstria e Comércio de Minérios S.A. (ICOMI) at the Amazon River port of Santana, Amapá Territory, produced its first pellets in May, but actual commercial operation was delayed by the problems normally attendant upon breaking-in a new plant. Design capacity is 235,000 short tons per year of pellets containing approximately 60% manganese. The complementary concentrator being built at the mine at Serra do Navio, designed to handle 200 short tons of ore per hour, underwent its first trial tests in December 1971. Mine-run manganese ore produced in 1972 at Serra do Navio (ICOMI) totaled
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