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
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.
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
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.
