1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Porphyry Tunnel

Occurrence in Elko county in Nevada, United States with commodities Lead, Silver, Copper
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10046042
MRDS ID M233951
Record type Site
Current site name Porphyry Tunnel

Geographic coordinates

Geographic coordinates: -114.80894, 40.56825 (WGS84)
Relative position ENE BLACK FOREST MINE

Site location context

Political divisions (FIPS codes)

Elko(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Spruce Mountain(quadrangle 1:24,000 scale)

Wendover(quadrangle 1:100,000 scale)

Elko(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Long-Ruby Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 031N 063E 13 Nevada

Comments on the location information

  • N SIDE OF CANYON

Commodities

Commodity Importance
Lead Primary
Silver Secondary
Copper Secondary

Materials information

Materials Type of material
Copper Ore
Lead Ore
Pyrite Ore
Chlorite Gangue
Kaolin Gangue
Limonite Gangue
Quartz Gangue

Alteration

  • (Local) Some Silication, Kaolinization

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -114.80894, 40.56825
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Sprucemont Thrust

Ore body information

  • Width 9.14M

Controls for ore emplacement

  • E-W Thrust Fault

Comments on the geologic information

  • SKARN DEVELOPED 30 FT WIDE IN THE ADIT

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1931

Mining district

District name Spruce Mountain

Comments on the workings information

  • ADIT, TUNNEL

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    SCHRADER, F.C, 1931, SPRUCE MOUNTAIN DISTRICT, ELKO COUNTY, U. OF N. BULL. VOL XXV, NO. 7

General comments

Subject category Comment text
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
Deposit FAULT ZONE IN GRANITE PORPHYRY; 30-FT. WIDE SKARN. LEAD, SILVER, COPPER MINERALIZATION

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1979 Tingley, J.V. Nevada Bureau of Mines and Geology

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Nevada resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.