Gold and Silver: Comprising an Economic History of Mining in the United States, the Geographical and Geological Occurrence of the Precious Metals, with Their Mineralogical Associations, History and Description of Methods of Mining and Extraction of Values, and a Detailed Discussion of the Production of Gold and Silver in the World and the United StatesJ. Wiley & Sons, 1908 - 727 strani |
Iz vsebine knjige
Zadetki 1–5 od 88
Stran vi
... Belt , Colorado , Connecticut , Georgia , Idaho , Isthmus of Panama , Kansas , Kentucky , Maine , Maryland , Massachusetts , Michigan , Minnesota , Missouri , Montana , Nevada , New Hampshire , New Jersey , New Mexico , New York ...
... Belt , Colorado , Connecticut , Georgia , Idaho , Isthmus of Panama , Kansas , Kentucky , Maine , Maryland , Massachusetts , Michigan , Minnesota , Missouri , Montana , Nevada , New Hampshire , New Jersey , New Mexico , New York ...
Stran vii
... TABLE IV . Yield of Ores by Districts and Mines 686 TABLE V. Yield of Gravels by Districts and Mines 710 • • TABLE VI . Fineness and Value of Gold and Silver . 712 • LIST OF ILLUSTRATIONS . PAGE . Gold Belt of the CONTENTS . vii.
... TABLE IV . Yield of Ores by Districts and Mines 686 TABLE V. Yield of Gravels by Districts and Mines 710 • • TABLE VI . Fineness and Value of Gold and Silver . 712 • LIST OF ILLUSTRATIONS . PAGE . Gold Belt of the CONTENTS . vii.
Stran viii
... of the Precious Metals, with Their Mineralogical Associations, History and Description of Methods of Mining and Extraction of Values, and a Detailed D Walter Richard Crane. 1 1 LIST OF ILLUSTRATIONS . PAGE . Gold Belt of the.
... of the Precious Metals, with Their Mineralogical Associations, History and Description of Methods of Mining and Extraction of Values, and a Detailed D Walter Richard Crane. 1 1 LIST OF ILLUSTRATIONS . PAGE . Gold Belt of the.
Stran ix
... Belt of the Southern States Section at Conorado Shaft , Leadville , Colorado 172 210 Ruby Mountain , Gray's Peak , Argentine Pass , Montezuma , Colorado , facing 218 Dahlonega and Vicinity , Georgia 225 Central Idaho Gold Fields 227 The ...
... Belt of the Southern States Section at Conorado Shaft , Leadville , Colorado 172 210 Ruby Mountain , Gray's Peak , Argentine Pass , Montezuma , Colorado , facing 218 Dahlonega and Vicinity , Georgia 225 Central Idaho Gold Fields 227 The ...
Stran 26
... belt , have been productive of many and quite exten- sive auriferous gravel deposits . It is therefore rather surprising that De Soto did not find more of the golden wealth that he sought , unless , as has been suggested , " the ...
... belt , have been productive of many and quite exten- sive auriferous gravel deposits . It is therefore rather surprising that De Soto did not find more of the golden wealth that he sought , unless , as has been suggested , " the ...
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Alaska amalgamation andesite argentiferous assay auriferous average bed-rock blende bornite calcite California Carolina cent chalcopyrite chloride chlorination Colorado Comstock lode concentration considerable copper country-rock County Cripple Creek cyanide cyanide process Deep Mines deposits depth diorite discovered discovery district dollars drift employed extraction feet free-gold furnace galena gangue gneiss gold and silver gold production Gold-bearing granite gravel gray copper Gulch Hill hydraulic Ibid Idaho inches iron Jour lead limestone located mercury method Mexico mill Mineral Industry Mineral Resources Mines and Minerals Montana Mountain Nevada North occur operations ore-bodies ounces output oxide placer mines placers porphyry precious metals Press probably production of gold pyrite pyrrhotite quantities quartz quartz-veins quartzites Rept rhyolite River rocks schists shaft siliceous silver production Silver-bearing slate sluices smelting solution South stamps stope sulphides sulphurets surface TABLE tellurides tellurium tetrahedrite timber tion tons Total tunnel Utah yield zinc