Defrees

The Defrees is a silver mine located in Elko county, Nevada.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: Defrees  

State:  Nevada

County:  Elko

Elevation:

Commodity: Silver

Lat, Long: 41.32, -116.22444

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.


Satelite image of the Defrees

Defrees MRDS details

Site Name

Primary: Defrees
Secondary: De Frieze


Commodity

Primary: Silver
Secondary: Gold


Location

State: Nevada
County: Elko
District: Tuscarora District


Land Status

Not available


Holdings

Not available


Workings

Type: Underground


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1890
Discovery Year: 1890
Years of Production:
Organization:
Significant: N
Deposit Size: M


Physiography

Not available


Mineral Deposit Model

Model Name: Epithermal vein, Comstock


Orebody

Form: TABULAR


Structure

Type: L
Description: E-Striking Faults Conjugate To A Set Of Nw-Striking Faults


Alterations

Alteration Type: L
Alteration Text: Inner Potassic Zone; Outer Early Propylitic Zone


Rocks

Name: Andesite
Role: Host
Age Type: Host Rock Unit
Age Young: Oligocene

Name: Andesite
Role: Host
Age Type: Host Rock
Age Young: Oligocene

Name: Andesite
Role: Host
Age Type: Associated Rock Unit
Age Young: Oligocene


Analytical Data

Not available


Materials

Ore: Silver


Comments

Comment (Production): MAJOR PRODUCTION OCCURRED PRIOR TO 1890.

Comment (Development): MAJOR PRODUCTION PRIOR TO 1890

Comment (Deposit): TYPICAL BONANZA-TYPE EPITHERMAL VEIN DEPOSIT. BEST ORE SHOOTS PITCHED NORTHWARD ALONG INTERSECTIONS OF FISSURES.

Comment (Workings): 150 FT SHAFT, & OTHER WORKINGS


References

Reference (Production): NOLAN, (1936) P. 30

Reference (Deposit): EMMONS, W.H., 1910, USGS BULL 408

Reference (Deposit): NOLAN, T.B., 1936, NBMG BULL 25

Reference (Deposit): SMITH, R.M., 1976, USGS OFR 76-56


Nevada Gold

Gold Districts of Nevada

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.