Genetic implications of mineralization and alteration ages at the Florida Canyon epithermal Au-Ag deposit, Nevada

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Florida Canyon is a large, disseminated epithermal Au-Ag deposit localized along and in
the footwall of the ~N-S range-bounding fault zone on the western margin of the Humboldt
Range in north-central Nevada. Mineralization was primarily controlled by range-front faults,
a NE-trending shear zone and subsidiary structures. Vein and alteration mineralogy at Florida
Canyon suggest an affinity with low-sulfidation epithermal deposits. However, it is hosted by
weakly metamorphosed siliciclastic sedimentary rocks of Triassic age and apparently lacks igneous
rocks that are coeval with mineralization. Valley-fill sediments adjacent to the deposit
host the shallow portion of the Humboldt House geothermal system, which has a reservoir temperature
of 219–252°C and is associated with auriferous quartz veins, sinter and travertine.

SKU: 2010-47 Category:

Additional information

Type

Primary Author

Richard Fifarek

Year

County

State

Country

Commodity

,

Deposit Type

, ,

Mining District

Mine

Geochronological Method

Alteration Type