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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 762

762 
MINERALS YEARBOOK, 1972 
 Imports for consumption classified as "manganese compounds, other" totaled
7,937 short tons in 1972, compared with 
2,942 tons in 1971. The sources, gross weights, and values per pound in 1972
were as follows: Japan, 4,126 tons (17.5 cents) ; Morocco, 3,307 tons (1.7
cents); the United Kingdom, 279 (6.9 cents) ; Bel 
gium-Luxembourg, 218 tons (16.0 cents); the Republic of South Africa, 5 tons
(6.7 cents) ; and West Germany, 2 tons (82 cents) . The imports from Japan
and Belgium-Luxembourg appear to have consisted largely, if not entirely,
of synthetic manganese dioxide. 
Table 7.—U.S. impotsi of manganese ore (35% or more Mn), by country
 1971 1972 
Country Gross  Mn Value Gross  Mn Value weight content (thou- weight content
(thou- 
(short tons) (short tons) sands) (short tons) (short tons) sands) 
Angola2 56,721 27,603 $982 35,570 17,160 $1,244Australia 107,593 52,630 2,629
82,587 40,261 1,575Brazil 701,772 334,851 14,852 ' 404,972 192,827 8,217Canada
18,495 8,547 595 11 5 (4)Congo (Brazzaville) 5 - - - - - - 33,521 16,760
64Gabon' 597,102 305,589 13,409 473,142 236,821 10,669Ghana 78,271 37,815
2,040 46,940 22,062 1,237India 2,900 1,283 43 25,593 12,400 620Mexico 27,291
12,986 492 70,655 32,731 1,803Morocco 24,460 12,730 1,205 26,309 13,936 1,277Singapore
193 106 11 -- -- --South Africa, Republic of 185,636 87,358 3,705 142,354
65,742 2,715Turkey 8,064 3,790 220 -- -- --Zaire 105,766 52,834 2,001 ~278,598
141,990 4,894 
Total 1,914,264 938,122 42,184 ' 1,620,252 792,695 34,315 
 Quantities for general imports and imports for consumption were identical.
 2 Part or all of the ore reported to have come from Angola in 1971 and 1972
is believed to have originated in Gabon. 
3 It appears that up to 225,000 additional tons (gross weight) may have come
from Brazil in 1972. 
 4Less than ~ unit. 
 ' Actually from Gabon. 
 6 In addition, in 1971, some imports reported as Angola may have originated
in Gabon. In addition, in 1972 Gabon imports reported as Congo (Brazzaville)
were approximately 35,000 tons (gross weight), Gabon imports reported as
Zaire were approximately 130,000 tons (gross weight), and some or all of
the imports reported as Angola probably originated in Gabon. 
 7 In 1972, actual imports originating in Zaire were approximately 150,000
tons (gross weight); see footnote 6. 
Table 8.—U.S. imports for consumption of ferromanganese, by country
Country 
1971 
1972 
Gross 
weight 
(short 
tons) 
Mn 
content 
(short 
tons) 
Value 
(thou- 
sands) 
Gross 
weight 
(short 
tons) 
Mn 
content 
(short 
tons) 
Value 
(thou- 
sands) 
Belgium-Luxembourg              
BraziL..                       
Canada                        
France                        
Germany, West                  
India                         
Italy                          
Japan                         
Norway                        
Rhodesia                       
SouthAfrica,Republicof           
Sweden                        
United Kingdom                 
Yugoslavia                      
1,456 
- 
570 
92,321 
1,552 
32,717 
652 
2,757 
14,523 
90,078 
5,469 
 683 
1,136 
460 
71,481 
1,329 
24,463 
546 
2,133 
11,633 
~ 
70,892 
4,640 
~ 
547 
$198 
118 
10,944 
599 
3,769 
166 
488 
2,333 
~ 
12,089 
1,530 
~ 
158 
9,911 
 6,079 
597 
100,084 
707 
13,093 
3,026 
29,050 
25,624 
 1,504 
152,441 
 6,423 
 (' ) 
~ 
7,775 
 4,592 
460 
78,382 
603 
 9,950 
2,442 
23,179 
20,181 
 1,210 
120,617 
 5,326 
 (' ) 
-- 
$1,172 
 667 
211 
14,067 
 267 
1,516 
 718 
5,374 
3,145 
 171 
20,866 
1,672 
(5) 
-- 
Total                     
242,778 
189,260 
32,392 
348,539 
274,717 
49,846 
' Less than ~ unit. 


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