IRON  AND  MANGANESE. 
IRON  AND  MANGANESE  ORES  OF  THE  UNITED  STATES. 
By  Edwin  C.  Eckel. 
The  Survey  has  carried  on  extensive  work  in  the  principal  iron 
districts  during  1904  and  preceding  years,  and  several  reports  on 
the  field  work  of  1904  are  presented  below.  Detailed  investigations 
of  several  important  iron  districts  are  now  planned  for  1905.  The 
relations  of  the  work  done  in  the  past  and  that  still  remaining  to 
be  done  can  best  be  shown  if  the  iron-ore  production  of  the  United 
States  is  subjected  to  analysis.  The  figures  given  below  are  those 
collected  by  the  United  States  Geological  Survey  and  published  in  its 
annual  volume  on  Mineral  Resources : 
Production  of  iron  ore  in  the  United  States  in  1903,  by  States  and  varieties. 
[Long  tons.] 
State. 
Red  hematite. 
Brown 
hematite. 
Magnetite. 
Carbon- 
ate. 
Total. 
Minnesota 
[(Michigan .  _ 
iA.labama 
15,371,396 
10, 592, 933 
2, 779, 691 
371,189 
31,609 
646, 042 
15, 420 
83,820 
15,371,396 
905, 269 
481,515 
764, 948 
29, 011 
202,542 
5, 159 
7,397 
10, 600, 330 
3, 684, 960 
jJTennessee 
Virginia   and    West  Vir- 
If   ginia  .: 
852, 704 
4,604 
801,161 
|(Wisconsin _. ; 
Pennsylvania 
(575, 053 
426,637 
451,481 
484, 796 

644,  .V.i!) 
jlNew  York 
'New  Jersey 
540, 460 
484, 796 
3-eorgia 
124, 648 
235, 599 
3,621 
318,804 
13, 800 
249, 288 
17,588 
14,021 
443, 452 
Nevada,     New      Mexico, 
I   Utah,  and  Wyoming. . .  . 
Colorado 
North  Carolina 
142,843 
392, 242 
252, 909 
57, 664 
75, 252 
Missouri 
49, 359 
63, 380 
317 
