GOLD, SILVER, COPPER, LEAD, AND ZINC IN ARIZONA 199 ORE CLASSIFICATION

Details of ore classification are given in the chapter of this volume

on Gold and Silver.
Ore sold or treated in Arizona in 1941, with content in terms of recovered
metals
Source
Mines
rr9duc-
Ore
~hoit
Gold
oiinces
Silver
oi~nces)
(poii~ds)
L
(pounds)
*
(pounds)
Dry and sthceous gold ore
Dry and siliceous gold-silver ore...
Dry and siliceous silver ore     


Copper ore                  
Lead ore                    
Lead-copper ore              
Zinc ore 
Zinc-copper ore              
Zinc-lead ore                

 Total, lode mines        Total, placers                

Total, 1940                  
, 471 68
72
800 804
138,611
36,375
130 298
13, 187
713
213 360
526,518
455,936
322 564
542,414
192,522
4 482 513
457,950
49, 792


1 594
144
98
5
2
1
10
975,790
24, 153,483
18,432
 663
2, 143
80,810
260,473
144, 198
142,498
2, 129
19
58
1,069
13,490
1, 195,814
5,006,374
130,985
3,745
13, 168
224,400
921,569
1, 057,500
2647,420,204
142,351
 22,668
 13, 270
2,533,700
1,444,307
4,990,255
261,278
4,378,355
62,280
17, 700
355,000
21,211, 132
- 
- 



235,200
8,278,000
24,472,800

1 805
184
25,491,794
 
303,461
11,931
7,496,055
2,205
2652,634,000
31, 276,000
 
32,986,000

989 25, 491,794
1, 300j21~ 572, 175

315, 392
294,807
7,498,260 2652,634,000
7,075, 215~3562, 338,000

31, 276,000
26,532,000
32,986,000
30,912,000
 I A mine producing more than 1 class of ore is counted but once in arriving
at total for all classes. 2 Includes 118,450,902 pounds recovered from ore
leached and mine-water precipitates.
 Includes 103,327,137 pounds recovered from ore leached and mine-water precipitates.


METALLURGIC INDUSTRY

 Of the 25,491,794 tons of ore produced in 1941 in Arizona, 19,001,720 tons
(75 percent) were treated at concentration plants, 3,785,654 tons (15 percent)
were treated at a leaching plant, 833,910 tons (3 percent) were treated at
amalgamation and cyanidation mills, and 1,870,510 tons (7 percent) were shipped
crude to smelters.
 Gold ore treated at amalgamation mills in%creased from 4,162 tons in 1940..
to .7,517 tons in 1.941 and iiceous.material treated. at çy~imçhi-
tion plants from 742,801 to 826,393 tons. Cyanidation plants were operated
continuously in 1941 at the Goidroad, Gold Standard, Producers Mines, Inc.,
Congress, Octave, Mammoth-St. Anthony Limited, Alvarado. Yarnell, Vulture,
Vivian, and Iron King properties. Nine companies r~ported cyaniding 667,990
tons of siliceous material and using 132,570 pounds of sodium cyanide, 1,142,000
pounds of Aero Brand calcium cyanide, 80,775 pounds of zinc dust, 2,776,950
pounds of lime, 1,175 pounds of aerosol, 200 pounds of lead acetate, and
165 pounds of lead nitrate.
 Ore treated at concentration plants in 1941 comprised 6,940 tons of gold
ore, 36,440 tons of gold-silver ore, 2,100 tons of silver-ore, 18,607,089
tons of copper ore, 5,950 tons of lead ore, 600 tons of lead-copper ore,
2,143 tons of zinc ore, 80,810 tons of zinc-copper ore, and 259,648 tons
of zinc-lead ore. Copper ore from the Miami property (5,821,077 tons) was
treated by a combination of leaching and concentration and copper ore from
the Inspiration mine was treated by straight leaching, but 298,706 tons of
slimes discarded from the leaching-plant feed were concentrated. Large copper-concentration
plants were operated continuously in 1941 at Ajo, Clarkdale, Hayden, Miami,
Morenci, and Superior; copper-leaching plants at Inspiration and
497770—43——] 5