Silver mining in Nevada, a state of the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

, began in 1858 with the discovery of the Comstock Lode, the first major

silver Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, whi ...

-mining district in the United States.

Nevada Nevada ( ; ) is a U.S. state, state in the Western United States, Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. N ...

calls itself the "Silver State." Nevada is the nation's second-largest producer of silver, after

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

. In 2014 Nevada produced 10.93 million troy ounces of silver, of which 6.74 million ounces were as a byproduct of the mining of gold. The largest byproducers were the Hycroft Mine (1.82 million oz), the Phoenix Mine (1.65 million oz), the Midas Mine (1.49 million oz) and Round Mountain (0.58 million oz).

Rochester district

The Rochester district in

Pershing County Pershing County is a county in the U.S. state of Nevada. As of the 2020 census, the population was 6,650. Its county seat is Lovelock. The county was named after army general John J. Pershing (1860–1948). It was formed from Humboldt County ...

was discovered and named in the 1860s by prospectors from

Rochester, New York Rochester () is a City (New York), city in the U.S. state of New York (state), New York, the county seat, seat of Monroe County, New York, Monroe County, and the fourth-most populous in the state after New York City, Buffalo, New York, Buffalo, ...

. The district was not a large producer until the early 20th century. In its boom years from 1912 to 1921, the district produced 6.4 million troy ounces (200 metric tons) of silver, 52 thousand ounces (1.6 metric tons) of gold, and 110 thousand pounds (50 metric tons) of lead. The minerals occur in quartz veins contained in

Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period ...

rhyolite Rhyolite ( ) is the most silica-rich of volcanic rocks. It is generally glassy or fine-grained (aphanitic) in texture, but may be porphyritic, containing larger mineral crystals (phenocrysts) in an otherwise fine-grained groundmass. The mineral ...

. The Rochester Mine is the only currently operating primary silver producer in Nevada and the second largest in the US, after the

Greens Creek mine Greens may refer to: *Leaf vegetables such as collard greens, mustard greens, spring greens, winter greens, spinach, etc. Politics Supranational * Green politics * Green party, political parties adhering to Green politics * Global Greens * Europ ...

in Alaska. In 2015 it produced 4.6 million ounces of silver and 52,588 ounces of gold from an open pit and heap leaching operation. It is owned by

Coeur Mining Coeur Mining, Inc. is a precious metals mining company listed on the New York Stock exchange. It operates five mines located in North America. Coeur employs 2,200 people and in 2012 it was the world's 9th largest silver producer. In 2013 the compa ...

Comstock Lode

The Comstock Lode had been a minor gold placer district since 1849. In 1859, several prospectors discovered its rich lode silver ore, and a great rush of miners poured eastward from California, and established

Gold Hill Gold Hill may refer to: Canada * Gold Hill, British Columbia United Kingdom * Gold Hill, Shaftesbury, Dorset, a steep street used in Hovis commercial United States ;Alabama * Gold Hill, Alabama ;California * Gold Hill, El Dorado County, C ...

and

Virginia City Virginia City is a census-designated place (CDP) that is the county seat of Storey County, Nevada, and the largest community in the county. The city is a part of the Reno– Sparks Metropolitan Statistical Area. Virginia City developed as a boom ...

, the principal towns of the Comstock Lode. The district has been mostly inactive since the 1920s. The Comstock was the first important silver-mining district in the United States, and its discovery stimulated a great deal of prospecting for silver across the

Great Basin The Great Basin is the largest area of contiguous endorheic basin, endorheic watersheds, those with no outlets, in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja California ...

area of the United States. The resulting

silver rush A silver rush is the silver-mining equivalent of a gold rush, where the discovery of silver-bearing ore sparks a mass migration of individuals seeking wealth in the new mining region. Notable silver rushes have taken place in Mexico, Chile, the U ...

led to many other silver discoveries in

, including

Austin Austin is the capital city of the U.S. state of Texas, as well as the seat and largest city of Travis County, with portions extending into Hays and Williamson counties. Incorporated on December 27, 1839, it is the 11th-most-populous city ...

(1862), Eureka (1864), and

Pioche Pioche is an unincorporated town in Lincoln County, Nevada, United States, approximately northeast of Las Vegas. U.S. Route 93 is the main route to Pioche and bypasses the town center just to the east, with Nevada State Route 321 and Nevad ...

(1869). The largest operating mine in the Comstock District is the Lucerne Mine near Gold Hill, which produced 222,416 ounces of silver and 19,601 ounces of gold in 2014.

Reese River district

The silver deposits of the Reese River mining district were discovered in 1862. The town of

was established, and in 1863 became the county seat of the newly formed

Lander County Lander County is a county in the U.S. state of Nevada. As of the 2020 census, the population was 5,734. Its county seat is Battle Mountain. History Lander County was created in 1862 as the result of a mining boom on the Reese River along the ...

. By 1867, there were 11 ore-processing mills in the district. The ore deposits are veins in

quartz monzonite Quartz monzonite is an intrusive, felsic, igneous rock that has an approximately equal proportion of orthoclase and plagioclase feldspars. It is typically a light colored phaneritic (coarse-grained) to porphyritic granitic rock. The plagioclase ...

and

quartzite Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tect ...

Eureka district

The silver deposits at Eureka in

Eureka County Eureka County is a County (United States), county in the U.S. state of Nevada. As of the 2020 United States Census, 2020 census, the population was 1,855, making it the second-least populous county in Nevada. Its county seat is Eureka, Nevada, E ...

were discovered in 1864, but because of the high

lead Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cu ...

content of the ore, the silver could not be successfully recovered by amalgamation mills. Mining did not boom until after a smelter was built in the district in 1869. Most metal production occurred from 1869 to 1893. The ore bodies are replacement deposits of silver and gold-bearing

galena Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver. Galena is one of the most abundant and widely distributed sulfide minerals. It cryst ...

Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ' ...

sedimentary rocks. Early production was of the oxidized zone, where the

was altered to

cerussite Cerussite (also known as lead carbonate or white lead ore) is a mineral consisting of lead carbonate (PbCO3), and is an important ore of lead. The name is from the Latin ''cerussa'', white lead. ''Cerussa nativa'' was mentioned by Conrad Gessner ...

and anglesite in a gangue of

limonite Limonite () is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently written as FeO(OH)·H2O, although this is not entirely accurate as the ratio of oxide to hydroxid ...

, goethite, and

calcite Calcite is a Carbonate minerals, carbonate mineral and the most stable Polymorphism (materials science), polymorph of calcium carbonate (CaCO3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on ...

. When the miners extended the shafts down into the unoxidized zone, they mined the original sulfide minerals, and added

zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...

to the list of recoverable metals. Through 1964, Eureka made 4.0 million troy ounces (120 metric tons) of

, 170,000 ounces (5.3 metric tons) of

gold Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile met ...

, 370 million pounds (170 thousand metric tons) of

, 14 million pounds (6400 metric tons) of

, and 2.1 million pounds (950 metric tons) of

copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...

Pioche district

Mining in the

district in Lincoln County began in 1869 from silver veins in the

Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...

Prospect Mountain

. Replacement

manto may refer to: People * Mando (singer), Greek singer * Manto Mavrogenous, Greek national heroine * Saadat Hasan Manto, Urdu short story writer known by his pen name Manto * Manto Tshabalala-Msimang (1940–2009), South African politician * Manto ...

-type ore bodies were later discovered in the Highland Peak

Limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

age.Paul Gemmill (1968) ''The geology of the ore deposits of the Pioche district, Nevada'', in ''Ore Deposits of the United States 1933–1967'', New York: American Institute of Mining Engineers, p. 1130.

Tonopah district

The last great silver-mining district to be developed in Nevada was Tonopah, in Nye County, discovered in 1900. The silver deposits are replacement veins in

Tertiary Tertiary ( ) is a widely used but obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start ...

volcanic rocks. Through 1921, the district produced 138 million troy ounces (4,300 metric tons) of silver and 1.5 million ounces (47 metric tons) of gold.

References

External links

Southern Nevada: The Boomtown Years 1900–1925

Virginia & Truckee Railroad: The Comstock mining railroad
* Gold Hill Miners Union Records. Yale Collection of Western Americana, Beinecke Rare Book and Manuscript Library. {{United states topic, prefix=Silver mining in