NBMG Sample Site 2880

Past Producer in Churchill county in Nevada, United States with commodities Gold, Silver, Copper, Boron-Borates
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 10047487
MRDS ID M242845
Record type Site
Current site name NBMG Sample Site 2880

Geographic coordinates

Geographic coordinates: -119.10877, 39.84295 (WGS84)
Elevation 1570

Site location context

Political divisions (FIPS codes)

Churchill(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hot Springs Flat(quadrangle 1:24,000 scale)

Reno(quadrangle 1:100,000 scale)

Reno(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Granite Springs Valley(hydrologic unit)

Truckee(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 Churchill

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 023N 026E 19 SW Nevada

Comments on the location information

  • ACCESSIBLE FROM THE SE VIA BRADY'S HOT SPRING. . INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Tertiary
Boron-Borates Tertiary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Alteration

  • (Local) Silicification

Analytical data

Result SAMPLE 2880 FROM DUMPS OF THE 2 SOUTHERN SHAFTS, CONTAINS 15 % FE, 0.15 % MG, 0.1 % CA, 0.2 % TI, 15 PPM MN, 1 PPM AG, 300 PPM AS, 2000 PPM B, 100 PPM BA, 50 PPM CR, 200 PPM CU, 15 PPM MO, 10 PPM NI, 10 PPM SC, 200 PPM SR, 200 PPM V, 20 PPM Y, AND 50 PPM ZR.

Mineral occurrence model information

Model code 79
USGS model code 21a
Deposit model name Porphyry Cu-Mo
Mark3 model number 2

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -119.10877, 39.84295

Economic information

Geologic structures

Type of structure Local
Structure description Shears

Ore body information

  • General form TABULAR

Controls for ore emplacement

  • E-W Shear Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1935

Mining district

District name Truckee District; Fireball Ridge

Land status

Ownership category Private

Comments on the workings information

  • SEVERAL OLDER SHAFTS; NO DRILLING IN THIS AREA.

Comments on development

  • ALL OLD WORKINGS HERE; NO RECENT ACTIVITY; POSSIBLE OLD PRODUCTION, SMALL.

Reference information

Bibliographic references

  • Deposit

    QUADE, JACK, 26 FEB 85, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    NBMG STAFF, 1985, NBMG OFR 85-3.

  • Deposit

    WILLDEN, R. AND SPEED, R. C., 1974, NBMG BULL 83, PL. I, P. 85-86.

  • Deposit

    HARLAN, BRUCE, 1983, GSA ABSTRACTS WITH PROGRAMS NO. 16858, "MINERALIZATION AT FIREBALL RIDGE, NEVADA", P. 400.

General comments

Subject category Comment text
Deposit E-W TRENDING SILICIFIED SHEAR, PARTLY BRECCIATED, IN FINE-GRAINED HYPABYSSAL INTRUSIVES (MAYBE RHYOLITE OR DACITE). MOST OF THE DUMPS CONSIST OF OXIDIZED VOLCANICS WITH PROBABLE ARSENIDES AND POSSIBLE COPPER MINERALIZATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1987 La Pointe, D.D. (Tingley, J.V.) 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.

Authoritative Nevada resources

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