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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)


Page 764

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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