C-Zone

Prospect in Humboldt county in Nevada, United States with commodities Gold, Silver, Arsenic, Mercury
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. Ownership information
  18. Reserves and resources
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10055093
MRDS ID RE00039
Record type Site
Current site name C-Zone

Geographic coordinates

Geographic coordinates: -117.2629, 41.13239 (WGS84)
Elevation 1570
Relative position 3400 FT. ESE OF PINSON MILL.

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Adam Peak(quadrangle 1:24,000 scale)

Osgood Mountains(quadrangle 1:100,000 scale)

McDermitt(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle 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 Humboldt

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 38N 42E 32 NE4 Nevada

Comments on the location information

  • IMMEDIATELY SOUTH OF CX DEPOSIT AND EAST OF PINSON A PIT.

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Arsenic Critical Tertiary
Mercury Tertiary

Materials information

Materials Type of material
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Decalcification Of Ore Zone And Wall Rocks; Feox-Staining And Jasperoidal Silicification Locally.

Analytical data

Result LIMITED TRACE ELEMENT DATA INDICATE THE SAME TRACE ELEMENT SIGNATURE AS THE PINSON A ZONE AND MAG DEPOSITS.

Mineral occurrence model information

Model code 172
USGS model code 26a
Deposit model name Carbonate-hosted Au-Ag
Mark3 model number 15

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Granodiorite Stock
    Rock description Granodiorite Stock
    Stratigraphic age (youngest) Late Ordovician
    Stratigraphic age (youngest) Late Ordovician
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Comus Formation (Lower)
    Rock description Comus Formation (Lower)

Nearby scientific data

(1) -117.2629, 41.13239

Economic information

Geologic structures

Type of structure Regional
Structure description Part Of The Range Front Fault System.

Ore body information

  • Strike N85E
    Dip 40S
    Thickness 15.24M
    Length 137.16M
    Width 15.24M
    Depth to top 15.24M

Controls for ore emplacement

  • Fault Zone.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1975
Discoverer Cordex I Syndicate
Year of first production 1993
Year of last production 1994

Mining district

District name Potosi

Ownership information

  • Type Owner-Operator
    Owner Pinson Mining Co.

Reserves and resources

  • Type In-situ
    Estimate year 1992
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.614 g/mt Gold Major 1992

Comments on the reserve resource information

  • 1992 FIGURES CALCULATED USING A STRIP RATIO OF 9.5:1.

Workings at the site

  • Type of workings Surface
    Overall depth 67.06M
    Overall length 152.4M
    Overall width 121.92M

Comments on development

  • DISCOVERED BY MAPPING AND DRILLING WHILE DEVELOPING THE ORIGINAL PINSON OREBODY. SEVERAL BENCHES OF OVERBURDEN HAD BEEN STRIPPED FROM THE C-ZONE OREBODY AS OF 3/92. ACTIVITY WAS PLANNED TO RESUME IN 1993. ; ECON.COM: MILL RECOVERY EXPECTED TO BE 85-90%.

Reference information

Bibliographic references

  • Deposit

    MRDS QUESTIONNAIRE COMPLETED BY JOSEPH FOSTER, MINE GEOLOGIST, PINSON MINING COMPANY, MARCH, 1992

General comments

Subject category Comment text
Deposit Discovery Year: 1970'S
Deposit ORE OCCURS IN AN E-W STRIKING FAULT ZONE THAT INTERSECTS THE NE-STRIKING PINSON FAULT IN THE A PIT IMMEDIATELY TO THE WEST OF C-ZONE.
Deposit First Production Year: SCHEDULED FOR 1993

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1992 Phinisey, J. D. (Marcus, 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.