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Tehama Mine

Past Producer in Pershing county in Nevada, United States with commodities Gold, Silver, Copper
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10042515
MRDS ID M060331
Record type Site
Current site name Tehama Mine
Related records 10174896

Geographic coordinates

Geographic coordinates: -118.11875, 40.59239 (WGS84)
Elevation 1926
Relative position 8 MI. S. OF IMLAY; NE END HUMBOLDT RANGE

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Star Creek Ranch(quadrangle 1:24,000 scale)

Eugene Mountains(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Pershing

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 031N 034E 02 Nevada

Comments on the location information

  • IN TEHAMA CANYON; PREVIOUS QUAD DESIGNATION = IMLAY (1956) 1:625000

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Tertiary

Materials information

Materials Type of material
Chalcanthite Ore
Chalcopyrite Ore
Freibergite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Ankerite Gangue
Biotite Gangue
Quartz Gangue

Alteration

  • (Local) Silicification, Sericitization, Pyritization Of Rhyolite

Analytical data

Result .02-.1 OZ AU
Result 3.2-30.4 OZ AG
Result 1.95-3.29% CU

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -118.11875, 40.59239
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description American Basin Fault
Type of structure Local
Structure description 2 Nw Normal Faults (Post-Mineral); Pre-Mineral Fault Zones.

Ore body information

  • General form VEIN
    Strike N20E
    Dip 70W
    Width 3.05M

Controls for ore emplacement

  • Brecciated Zone Along Rhyolite-Shale Contact

Comments on the geologic information

  • MINERALIZATION IS LOCALIZED IN THE FAULTED AND BRECCIATED ZONE ALONG OR NEAR THE KOIPATO RHYOLITE-SHALE CONTACT. OTHER COPPER MINERALIZATION CAN BE SEEN IN SHATTERED ZONES IN THE SHALES. FAULTING DIPS PARALLEL TO THE BEDDING OR ABOUT 65 DEGREES WEST. VEIN IS 3-10 FT WIDE WITH A ZONE OF ABOUT 10 FEET ON EITHER SIDE OF VEIN THAT IS FRACTURED AND FILLED WITH SECONDARY COPPER SULFATE. THE MINERALIZED ZONES OF FRACTURING ARE ASSOCIATED WITH AND TREND ROUGHLY PARALLEL TO FAULT ZONES.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Star District

Land status

Ownership category Private

Comments on the workings information

  • DEVELOPMENT CONSISTS OF A 250-FT ADIT INTERSECTING A 205-FT SHAFT, WITH SMALL STOPES AND CROSSCUTS. TWO CROSSCUTS, 560 FT AND 150 FT LONG, WERE DRIVEN NEARBY. A 15-TON MILL WAS OPERATED TO RECOVER GOLD-SILVER.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THE MINERALIZATION AT THIS PROPERTY IS LOCALIZED IN THE FAULTED AND BRECCIATED ZONE ALONG OR NEAR THE KOIPATO RHYOLITE-SHALE CONTACT. OTHER COPPER MINERALIZATION CAN BE SEEN IN SHATTERED ZONES IN THE SHALES. FAULTING DIPS PARALLEL TO THE BEDDING OR ABOUT 65 DEGREES WEST. VEIN IS 3-10 FT WIDE WITH A ZONE OF ABOUT 10 FEET ON EITHER SIDE OF VEIN THAT IS FRACTURED AND FILLED WITH SECONDARY COPPER SULFATE. THE MINERALIZED ZONES OF FRACTURING ARE ASSOCIATED WITH AND TREND ROUGHLY PARALLEL TO FAULT ZONES.
Deposit PROPERTY CONSISTS OF 8 PATENTED AND 3 UNPATENTED CLAIMS. DEVELOPMENT CONSISTS OF A 250 FT ADIT INTERSECTING A 205-FT. SHAFT, WITH SMALL STOPES AND CROSSCUTS. TWO CROSSCUTS, 560 AND 150 FT LONG HAVE BEEN DRIVEN NEARBY. 15-TON ML WAS OPERATED TO RECOVER GOLD-SILVER. ANY COPPER PRODUCTION IS UNKNOWN. 1956 REPORT SAYS WESTERN MERCURY WAS ATTEMPTING TO LEACH SECONDARY COPPER ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1973 Johnson, Maureen G. Nevada Bureau of Mines and Geology
Updater 01-JAN-1981 Royse, Sue E. Nevada Bureau of Mines and Geology
Updater 01-SEP-1994 Li, Zhiping (Peters, S.) U.S. Geological Survey

Beyond USGS

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

External references

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.