30 
MINERALS YEARBOOK, 1985 
 
Table 7.—Number of domestic metal and industrial mineral mines1
in
the United States 
in 1984, by commodity 
. 
mm ty 
Total 
number 
of 
mines 
Less 
than 
1,000 
tons 
1,000 
to 
10,000 
tons 
10,000 
to 
100,000 
tons 
100,000 
to 
1,000,000 
tons 
1,000,000 
to 
10,000,000 
tons 
More 
than 
10,000,000 
tons 
METALS 
Bauxite                  
Copper                   
Gold: 
Lode                 Placer                 
Ironore                  
LeacL                    
Silver                    
Titanium (ilmenite)         
Tungsten                 
Uranium                 
Zinc                     
Other2                   
 
Total               
 
 INDUSTRIAL MINERALS — 
6 
25 
 
82 
31 
21 
13 
33 
3 
9 
41 
11 
21 
2 
 
35 
5 
~ 
3 
9 
— — 5 
9 
 
2 
3 
 
8 
8 
1 
1 
7 
— — 2 
9 
1 
5 
4 
3 
8 
11 
3 
1 
7 
— — 17 
1 
5 
2 
20 
5 
4 
6 
8 
2 
2 
6 
7 
4 
9 
 
10 
2 
5 
2 
2 
1 
 
~ 2 
5 
8 
 
 1 
~ 
8 
~ 
 
— — 
 
~ 
~ 
—— 
 
296 
70 
45 
60 
66 
38 
17 
 
 
 
 
 
 
 
 
Abrasives3                
Asbestos                 
Barite                   
Clays                    
Diatomite                 
Feldspar                  
Fluorspar                
Gypsum                  
Mica(scrap)               
Perlite                   
Phosphaterock             
Potassiumsalts            
Pumice                   
Salt                    
Sand and gravel            
Sodium carbonate (natural) - - 
Talc, soapstone, pyrophyllite — - 
Other4                   
Total               
Grand total          
 12 
3 
 15 
 944 
 10 
 15 
4 
 69 
 12 
 11 
 36 
5 
 23 
 19 
6,076 
5 
 40 
 31 
 2 
-- 
 
56 
~ 
~ 
 1 
 2 
 1 
 
~ 
~ 
 4 
~ 
111 
- - 
 8 
 7 
 4 
-- 
 4 
226 
 2 
 3 
 2 
 4 
 2 
 3 
~ 
~ 
 9 
 3 
913 
- - 
14 
 3 
5 
-- 
7 
 531 
4 
5 
 
 23 
5 
5 
1 
 ~ 
7 
4 
3,020 
- - 
 14 
 15 
1 
3 
4 
131 
4 
6 
1 
 38 
4 
3 
 11 
1 
3 
6 
1,960 
2 
4 
5 
-- 
—— 1 
~ 
2 
—— 
—— 17 
4 
—_ 
6 
71 
3 
— — 1 
-- 
—— 
~ 
—— 
~ 
~ 
~ 
—— 
—— 7 
~ 
 
~ 
1 
- - 
— — 
~ 
 
7,330 
192 
1,192 
3,646 
2,187 
105 
8 
 
7,626 
262 
1,237 
3,706 
2,253 
143 
25 
 1Excludes wells, ponds, or pumping operations. 
 2lncludes antimony, beryllium, manganiferous ore, mercury, molybdenum, rare-earth
metals, and tin. 
 3lncludes abrasive stone, emery, garnet, and tripoli. 
 4lncludes aplite, boron minerals, graphite, greensand marl, iron oxide pigments
(crude), kyanite, magnesite, millstones, olivine, vermiculite, and wollastonite.