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Ophir Claims Block

Past Producer in Nye county in Nevada, United States with commodities Gold, Silver
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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. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10045815
MRDS ID M233651
Record type Site
Current site name Ophir Claims Block
Alternate or previous names Gold Reef Claims

Geographic coordinates

Geographic coordinates: -117.32565, 38.94992 (WGS84)

Site location context

Political divisions (FIPS codes)

Nye(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

South Toiyabe Peak(quadrangle 1:24,000 scale)

Ione Valley(quadrangle 1:100,000 scale)

Tonopah(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Reese(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Humboldt-Toiyabe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Nevada Nye

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 013N 042E Nevada

Comments on the location information

  • WESTERN CREST OF RANGE, HEAD OF OPHIR CANYON

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Pyrite Gangue
Sericite Gangue

Alteration

  • (Local) Oxidation, Silicification

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock

Economic information

Ore body information

  • Strike N20W
    Dip 50SW

Comments on the geologic information

  • AT SAM LOC 776 A SHAFT & OPEN PROSPECT EXPLORE A N20W, 50SW STRIKING OXID. & FRACTURED ZONE IN A LT BLUE-GRY SERICITIZED INTERMEDIATE VOLC? RK OR SUB-INTRUSIVE. THE SHAFT DOES NOT APPEAR TO FOLLOW THE STRUCTURE UNLESS IT INTERCEPTS IT AT DEPTH. BOTH WORKINGS ARE IN A RESISTANT OTCP OF FE-STAINED, FRACTURED & JOINTED ALTERED, VOLC. WITH SILIC GRNDMASS, OXID MAFICS, & KAOLIN OR SERICITIZED PLAG. PHENOS. THE OTCP SHOWS A NUMBER OF LOW SHEARS WHICH ARE MINOR IN SCALE. THE HOST RK IS BRXIATED & CONTAINS SOME PYRITE GHOSTS & OXID. XTALS. THE SHEARS ARE FLAT LYING & UNDULATORY. A SYSTEM OR JOINTS IS DEVELOPED WHICH DIPS TO THE E. QTZITE? BRX. WITH SILIC & FE-OX WAS FOUND ON DUMP & INCLUDED IN SAMPLE. SAMPLE SHOWS, PYRITE GHOSTS & POCKETS OF SERCITE, FELDSPARS ARE REPLACED BY SERICITE IN VOLC SAMPLES. EXTENSIVE TRENCHES OF E OF SAM LOC ARE IN QTZITE & METAPELITIC ALLUVIUM. DUMP RK SHOWS SOME, FLOURITE COATINGS & POSS. QTZ VEIN MATERIAL.

Economic information about the deposit and operations

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

Mining district

District name Twin River

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Lu. Larson

Reference information

Bibliographic references

  • Deposit

    OBSERVATION

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1982 Martin, Paul (Tingley, Joe 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.