Sleeper Gold Mine

41°20′02″N 118°03′09″W / 41.3338°N 118.0524°W / 41.3338; -118.0524^[1]

The Sleeper Gold Mine was a high-grade gold mine operated by AMAX Gold from 1986 until 1996, producing 1.66 million ounces of gold and 2.3 million ounces of silver. It is located about 25 miles northwest of Winnemucca in Humboldt County, Nevada.^[2] This was an epithermal (hot springs) gold deposit, formed by volcanism during Basin and Range extensional tectonics. The Sleeper Rhyolite dates to 16.3-16.5 million years (latest Early Miocene), and the gold mineralization dates to about 14.3-15.8 million years (during the early Middle Miocene).^[3]

In 2023, the property was owned by Paramount Gold.^[2]

References

^ "Sleeper Mine". USGS. Retrieved September 19, 2023.
^ ^a ^b "Sleeper Gold Project of Paramount Gold". paramountnevada.com. Retrieved September 19, 2023.
^ Geology and geochemistry of the Sleeper Gold-Silver Deposit, Humboldt County, Nevada, USGS open-file report, 1989

External links

Sleeper rhyolite gold ore. Geologic description of the specimen above.

[1] "Sleeper Mine". USGS. Retrieved September 19, 2023.

[sleeper-2] "Sleeper Gold Project of Paramount Gold". paramountnevada.com. Retrieved September 19, 2023.

[3] Geology and geochemistry of the Sleeper Gold-Silver Deposit, Humboldt County, Nevada, USGS open-file report, 1989

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