Porphyry Tunnel

The Porphyry Tunnel is a lead 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: Porphyry Tunnel  

State:  Nevada

County:  Elko

Elevation:

Commodity: Lead

Lat, Long: 40.56833, -114.80806

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 Porphyry Tunnel

Porphyry Tunnel MRDS details

Site Name

Primary: Porphyry Tunnel


Commodity

Primary: Lead
Secondary: Silver
Secondary: Copper


Location

State: Nevada
County: Elko
District: Spruce Mountain


Land Status

Not available


Holdings

Not available


Workings

Not available


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1931
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

Not available


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Type: L
Description: Sprucemont Thrust


Alterations

Alteration Type: L
Alteration Text: Some Silication, Kaolinization


Rocks

Not available


Analytical Data

Not available


Materials

Ore: Lead
Ore: Copper
Ore: Pyrite
Gangue: Chlorite
Gangue: Kaolin
Gangue: Limonite
Gangue: Quartz


Comments

Comment (Deposit): THE PORPHYRY TUNNEL IS DRIVEN IN A NORTHERLY DIRECTION INTO THE GRANITE PORPHYRY OUTCROPPING ON THE NORTH SLOPE OF BLACK FOREST CANYON, BELOW THE BLACK FOREST MINE. THE ADIT WAS DRIVEN TO EXPLORE THE AREA FOR MINERAL POTENTIAL, ESPECIALLY IN THE AREA OF THE E.W. TRENDING SPRUCEMONT THRUST FAULT. THE PROPERTY IS PART OF THE BLACK FOREST MINE PROPERTY. ; INFO.SRC : 1 PUB LIT

Comment (Geology): SKARN DEVELOPED 30 FT WIDE IN THE ADIT

Comment (Location): N SIDE OF CANYON

Comment (Deposit): FAULT ZONE IN GRANITE PORPHYRY; 30-FT. WIDE SKARN. LEAD, SILVER, COPPER MINERALIZATION

Comment (Workings): ADIT, TUNNEL


References

Reference (Deposit): GRANGER, A.E., ET ALL, (1957), GEOLOGY AND MINERAL RESOURCES OF ELKO COUNT, NEVADA, U. OF N. BULL. 54

Reference (Deposit): SCHRADER, F.C, 1931, SPRUCE MOUNTAIN DISTRICT, ELKO COUNTY, U. OF N. BULL. VOL XXV, NO. 7


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.