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Hercules Property

Past Producer in Lyon 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. 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. Ownership information
  19. Reserves and resources
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10310426
MRDS ID RE00005
Record type Site
Current site name Hercules Property
Alternate or previous names Fire Angel, Hercules Mine, Hydra-Hercules Project, NBMG sample sites 3767 and 3768

Comments on the site identification

  • This record supersedes earlier records #RE00005 and MP90063 from which all material has been incorporated into the current record. Records #RE00005 and MP90063 should be deleted.

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -119.45766, 39.23046 (WGS84)
Elevation 1910
Location accuracy 100(meters)
Relative position The Hercules property is located about 30 miles southeast of Reno and 17 miles east of Carson City.

Site location context

Political divisions (FIPS codes)

Lyon(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Como(quadrangle 1:24,000 scale)

Carson City(quadrangle 1:100,000 scale)

Reno(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Carson(hydrologic unit)

Carson(hydrologic accounting unit)

Central Lahontan(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 Lyon

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo T16N R22E Nevada

Comments on the location information

  • The Hercules Property is at Barton Springs on the north slope of the Pine Nut Mountains, about 4 miles north of the major Como District mines.

Commodities

Commodity Importance
Gold Primary
Silver Primary

Comments on the commodity information

  • Ore Materials: gold
  • Gangue Materials: pyrite

Materials information

Materials Type of material
Gold Ore
Pyrite Gangue

Alteration

  • (Local) Hydrothermal alteration along brecciated zones

Mineral occurrence model information

Model code 150
USGS model code 25c
Deposit model name Epithermal vein, Comstock
Mark3 model number 16

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock type qualifier flows
    Stratigraphic age (youngest) Tertiary
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock
    Stratigraphic age (youngest) Tertiary

Nearby scientific data

Ore Body (1) -119.45766, 39.23046
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description shear zone, dipping 80-85E, vein 5-10E and greater than or equal to 20 feet thickK.
Type of structure Regional
Structure description The mine is located at the northern end of the Walker Lane Trend.

Ore body information

  • General form tabular

Controls for ore emplacement

  • shear zone

Comments on the geologic information

  • NBMG samples 3767 and 3768 were taken in the workings.

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1995

Mining district

District name Como

Land status

Ownership category BLM Administrative Area
Area name Carson City BLM District
Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Adamas Resources Corp.
    Year 1997
  • Type Owner
    Owner Bowman, Ivan
    Home office 105 Bardie Court, Grass Valley, CA

Reserves and resources

  • Type In-situ
    Estimate year 1997
    Inferred 6634000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.789 g/mt Gold Major 1997
    Silver Ag 5.45 g/mt Silver Major 1997

Comments on the workings information

  • The old workings consist of three adits, two shafts and approximately ten prospect pits, in an area of new roads, drill pads and many major drill holes dating from about 1980 to the present time (1989). Above the old workings several drill pads were used to slant drill at vein system from the southeast. Two crosscut adits trend S80E.

Comments on other economic factors

  • In 1996, reserves for the property were reported at 7,313,000 tons of ore grading 0.023 opt gold and 0.159 opt silver,an a total geologic resource of 20-50 million tons grading 0.040-0.045 opt gold. In 1997, Adamas reported that the property contained a geological resource amenable to open pit mining methods estimated at between 170,000 and 213,000 ounces of gold with over 1.5 million ounces of silver.

Comments on development

  • In September, 1997, Adamas Resources Corp. announced that it had entered into an agreement with GLS Global Assets Ltd. whereby GLS can acquire a 51% interest in Adamas' Hercules gold project.
    More than $2 million in exploration work has been done since 1984 on the property including over 34,000 feet of core and RVC drilling by prior earlier optionees, including Asamera, Horizon Gold, St. Joe Minerals and Phelps Dodge.
    Under the terms of the agreement, GLS would have until December 31, 1997 to complete a due diligence evaluation of the Project. Adamas planned to conduct its own exploration work on the Project, focusing on the numerous as-yet untested gold anomalies and geophysical targets previously identified on the Project grounds.
    In 1989 the property was owned by Ivan Bowman, 105 Bardie Court, Grass Valley, California.
    In 2004, Three reverse circulation holes drilled by Lincoln Gold Corp. to test the deeper levels of the Hercules vein system in the Como district failed to find bonanza-grade gold and silver mineralization. The holes encountered intervals of low-grade gold values near the surface, but the bonanza-grade values were not present at depth. Miranda Gold Corp. and Lincoln therefore terminated their joint venture and option on the Hercules property.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit Hercules hosts epithermal gold and silver mineralization within two separate northerly-trending structures.
Mineralization is associated with a shear zone, dipping 80-85E. The vein dips 5-10E and is greater than or equal to 20 feet thickT. he host structures, each approximately 9,000 feet in length, remain open along strike and down dip.
Workings follow a shear dipping 80-85E in host andesite flow containing andesite boulders up to 2 feet in diameter . One adit also cut a 20-foot thick vein trending N5-10E that was hydrothermally altered, light tan, mostly brecciated and commonly containing fine-grained pyrite.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-90 Skurski, M. (Marcus, Sue) U.S. Geological Survey
Updater 01-APR-91 Moyer, Lorre A. (Marcus, S.M.) U.S. Geological Survey
Reporter 18-AUG-95 Sachiko Tanikawa U.S. Geological Survey
Reporter 24-JUN-97 Buckingham, David A. U.S. Bureau of Mines
Reporter 01-MAY-04 LaPointe, D.D. Nevada Bureau of Mines and Geology
Editor 01-SEP-07 Schruben, Paul G. U.S. Geological Survey Converted from S&A FileMaker format to Oracle. Edit checks on rocks, units, and ages with Geolex search, and other fields.

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.