17,039,802 
1,046,879 
' 622,811 
290,227,105 
2,158,321 
2,973,252 
123,381 
1,011,705 
7,103,427 
539,940 
1,167,169 
35,835,560 
 
County 
1966 
1967 
El Dorado          
$2,638,668 
$2,573,291 
Fresno             
74,315,131 
72,978,845 
Glenn             
Humboldt - 
Imperial           
6,078,993 
2,835,261 
2,815,964 
5,064,762 
2,442,097 
5,931,506 
Inyo              
20,614,146 
23,789,781 
Kern 
 
 
Kings             
 
13,509,382 
Lake              
 
1,256,209 
Lassen            Los Angeles         
 
436,244 
319,726,615 
Madera         
 
2,778,904 
Mann             
Mariposa           
Mendocino         
Merced            
 
2,397,102 
125,697 
1,142,461 
3,846,147 
Modoc            Mono             
 
757,482 
422,829 
Monterey          
 
37,004,005 
Napa - 
3,841,656 
3,179,356 
Nevada            
Orange            
354,726 
121,418,023 
1,082,537 
119,221,179 
Placer             
Plumas            
Riverside           
1,165,044 
288,953 
' 67,046,319 
911,682 
514,485 
72,027,318 
Sacramento         
' 21,237,899 
19,588,409 
San Benito         
10,471,981 
10,483,030 
San Bernardino      
' 120,182,458 
113,356,370 
San Diego          
12,811,989 
14.517,347 
San Francisco       
San Joaquin         
W 
14,932,952 
W 
10,630,428 
San Luis Obispo     
5,141,754 
6,383,931 
San Mateo - 
14,638,201 
14,315,729 
Santa Barbara       
' 129,393,266 
132,565,326 
Santa Clara         
32,816,421 
32,951,928 
Santa Cruz         
Shasta             
11,529,324 
8,921,723 
12,501,351 
6,786,366 
Sierra             
Siskiyou            
109,194 
1,164,864 
277,314 
1,173,773 
Solano             
r 16,444,472 
13,250,416 
Sonoma            
Stanislaus          
5,257,405 
1,508,876 
4,419,564 
1,187,703 
Minerals produced in 1967 in order of value 
 
Stone, lime, sand and gravel, tungsten, soapstone, gold, silver. 
Petroleum, sand and gravel, natural gas, natural gas liquids, asbestos, stone,
mercury, gold, clays, silver. 
Natural gas, sand and gravel, lime. 
Natural gas, sand and gravel, stone. 
Sand and gravel, gypsum, lime, calcium chloride, clays, stone, gold, mica.

Tungsten, sodium carbonate, talc, stone, molybdenum, copper, sand and gravel,
lead, silver, 
zinc, perlite, pumice and volcanic cinder, boron, clays, barite, gold, sulfur,
wollastonite. 
 426,956,114 424,868,053 Petroleum, boron, natural gas, cement, natural 
  gas liquids, sand and gravel, stone, gypsum, 
sodium sulfate, clays, salt, carbon dioxide, tin pumicite and volcanic cinder,
iron ore, mercury silver, tungsten, gold, copper, lead, zinc. 
Natural gas, natural gas liquids, petroleum, sand and gravel, mercury. 
Sand and gravel, mercury, volcanic cinder, stone, clays. 
Sand and gravel, volcanic cinder, stone. 
Petroleum, sand and gravel, natural gas, natural gas liquids, stone, clays,
gold, soapstone, silver. 
Sand and gravel, natural gas, tungsten, stone, volcanic cinder, clays. 
Stone, sand and gravel, mercury, clays. 
Sand and gravel, stone, gold, clays, silver. 
Sand and gravel, stone, mercury. 
Sand and gravel, stone, gypsum, gold, mercury, silver. 
Volcanic cinder, peat, sand and gravel, stone. 
Pumice and volcanic cinder, sand and gravel, clays, stone. 
Petroleum, magnesium compounds, lime, sand and gravel, stone, natural gas,
feldspar, salt, mercury. 
Stone, salt, clays, mercury, diatomite, sand and gravel, volcanic cinder,
perlite. 
Sand and gravel, stone, gold, silver. 
Petroleum, natural gas, sand and gravel, natural gas liquids, clays, lime,
salt, peat, stone. 
Sand and gravel, clays, stone, gold, silver. Do. 
Iron ore, cement, sand and gravel, stone, clays, petroleum, woliastonite,
tungsten, copper, silver. 
Natural gas, sand and gravel, gold, natural gas liquids, clays, silver. 
Cement, stone, mercury, asbestos, sand and gravel, petroleum, natural gas,
clays. 
Cement, boron, stone, rare-earth minerals, sodium carbonate, sodium sulfate,
potassium salts, sand 
and gravel, iron ore, salt, lime, lithium minerals, clays, calcium chloride,
talc and pyrophyllite, bromine, tungsten, petroleum, pumice and volcanic
cinder, gypsum, natural gas, barite, copper, lead, silver, gold. 
Sand and gravel, stone, magnesium compounds, salt, clays, pyrophyllite. 
Sand and gravel. 
Natural gas, sand and gravel, lime, clays, gold, silver. 
Petroleum, mercury, sand and gravel, natural gas liquids, stone, natural
gas, gypsum, clays. 
Cement, magnesium compounds, salt, stone, sand and gravel, clays, petroleum,
natural gas. 
Petroleum, natural gas, diatomite, natural gas liquids, sand and gravel,
lime, mercury, stone. 
Cement, stone, sand and gravel, mercury, clays, petroleum. 
Cement, sand and gravel, stone, clays. 
Cement, sand and gravel, stone, clays, volcanic cinder, barite, gold, diatomite,
silver. 
Sand and gravel, gold, stone, silver. 
Sand and gravel, pumice and volcanic cinder, stone, gold, silver. 
Natural gas, stone, natural gas liquids, sand and gravel. 
Sand and gravel, mercury, stone, clays, natural gas. Sand and gravel, lead,
clays, gold, silver, stone, copper. 
See footnotes at end of table. THE MINERAL INDUSTRY OF CALIFORNIA 139 
 
 
Table 2.—Value of mineral production in California, by counties—Continued