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Gunman Property

Prospect in White Pine county in Nevada, United States with commodities Zinc, 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. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10310427
Record type Site
Current site name Gunman Property
Alternate or previous names RH Zone, RH South Zone

Comments on the site identification

  • Although reserves and resources have not yet been caculated, this project approaches the threshold values for zinc and silver for inclusion in significant deposit database.

Geographic coordinates

Geographic coordinates: -115.753, 39.87241 (WGS84)
Elevation 2010
Relative position The property is located about 40 miles NNE of Eureka on the east side of the Diamond Mountains. PS: Reporter entered lat/long degrees only (no minutes or seconds) and UTM coordinates. Also, the 39 lat was in the longitude field and the 115 long was in the latitude field. I used http://www.uwgb.edu/dutchs/UsefulData/UTMConversions1.xls to convert UTM to lat/long.

Site location context

Political divisions (FIPS codes)

White Pine(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Christina Peak(quadrangle 1:24,000 scale)

Newark Lake(quadrangle 1:100,000 scale)

Ely(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Little Smoky-Newark Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(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 White Pine

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 023N 055E 14 Nevada

Comments on the location information

  • The Gunman property consists of 120 Federal lode claims totaling 2,400 acres, located on the east flank of the Diamond Range, between Horse Canyon on the south and Big Canyon on the north. The property is immediately adjacent to a paved highway and to electrical power. UTM is centered on the RH Zone; the RH South zone lies about 2500 meters SSW of the RH zone.

Commodities

Commodity Importance
Zinc Critical Primary
Silver Primary

Comments on the commodity information

  • Ore Materials: smithsonite, zinc oxide, sulfides
  • Gangue Materials: calcite

Materials information

Materials Type of material
Smithsonite Ore
Calcite Gangue

Alteration

  • (Local) The deposit is intensely oxidized.

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock type qualifier carbonaceous
    Rock unit name Carbon Ridge Formation
    Stratigraphic age (youngest) Early Permian

Nearby scientific data

(1) -115.753, 39.87241
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description The regionally extensive, north-trending Phillipsburg fault is a Cenozoic normal fault that dips about 45 degrees west and extends for at least 40 km along the west flank of the Diamond Mountains.
Type of structure Local
Structure description Proximity to strong north trending faults appears to be a controlling factor on grade distribution.

Ore body information

  • General form tabular to blanket

Controls for ore emplacement

  • Proximity to strong north- trending faults appears to be a controlling factor on grade distribution.

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 2000

Mining district

District name Diamond Range (no district)

Land status

Ownership category BLM Administrative Area
Area name Ely BLM District

Ownership information

  • Type Owner
    Owner Cypress Development Corp. in the 2,400 acres Gunman Zinc-Silver Project
    Interest 73.13
    Year 2006
  • Type Owner
    Owner Bison Gold Exploration Inc. in the 2,400 acres Gunman Zinc-Silver Project (2006)
    Interest 26.87
    Year 2006
  • Type Operator
    Owner Cypress Development Corp.
    Year 2004

Comments on the workings information

  • The property is in an area previously unmined but just north of a few old shafts and prospect pits shown on the topographic map. The current prospect is developed by surface prospecting and drilling.

Comments on other economic factors

  • Reserves for the property have not yet been calculated and released, but rough calculations indicated that geologic resources of zinc and silver in the deposit may approach the thresholds for inclusion in the significant deposit database.

Comments on development

  • WMC drilled the property in 1990-1991.
    In May 2000, Mid-North and Cypress Development Corp. completed a 3,025 ft drill program at the Gunman property. Selected results include hole GM-01 grading 4.91% zinc and 32.86 g/t Ag over 100 ft and hole GM-02 grading 3.54% zinc and 5.7 g/t silver over 165 ft. In November of that year, Cypress reported assays from reverse circulation holes drilled in the RH Zone of its Gunman property in Nevada. The highest grade reported occurs in hole GM-26 between 85 and 95 feet depths where 19.08 % Zn and 90.5 g/t Ag were intersected.At that time 8900 feet of a planned 15,000 feet for Phase III had been drilled.
    In 2002, Cypress Development announced a formal joint venture agreement with Mid-North Resources for the Gunman property in which Cypress will be the operator with a 70% interest and Mid-North holding the remaining 30% interest in the property.

    Mapping and drilling was ongoing in early 2004 on the property. At that time (June 2004) , Cypress had completed 5,500 feet of reverse circulation drilling that include 19 R-C drill holes that step out approximately 2,000 feet to test the NNW extension of the high-grade zinc oxide RH zone, and 1 step out R-C drill hole has been completed so far, to test the SSE extension.
    Drilling continues to outline a zinc-bearing carbonate replacement envelope surrounding the high-grade RH Zone. This envelope covers an area of at least 600 metres long and 200 metres wide. Cypress?s efforts are currently focused on extending the high-grade core of the system. All drill holes to date, have encountered the same altered oxidized carbonate replacement host rock found in the RH Zone. This drilling could increase the potential size and scale of the RH Zone. The Company anticipates its phase 1 work program will include 30 R-C drill holes, drilled from 18 sites, for a total of approximately 9,000 feet. The Company anticipates releasing all assays from the first 20 drill holes later in June 2004. In 2006, Cypress Development Corp. holds a 73.13% interest, Bison Gold Exploration Inc. 26.87%, in the 2,400 acres Gunman Zinc-Silver Project. At that time, the two drill programs completed by Cypress Development on the Gunman property included 26,000 feet of drilling, which returned some spectacular drill intercepts with grades reaching up to 37% zinc over 5.0 feet, and 26.8% zinc and 8 oz per ton silver over 75 feet.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit The mineralization is shallow occurring mainly between the surface and 300 foot depth and consists of a high-grade zinc oxide zone surrounded by a zinc-bearing carbonate replacement envelope. The RH Zone is a tabular body of intensely oxidized, zinc-silver mineralization of apparent carbonate replacement origin. The zinc mineralization is primarily zinc oxide (smithsonite). As partially delineated by the 2000 drill program, the RH Zone is approx. 300 feet long (NNW), 150 feet wide (ENE), and about 80 feet thick starting at or near surface and continues to be open along strike in both directions. Drilling has indicated that mineralization occurs in vertical bodies within a flat lying oxidized zone up to 300 feet thick extending down from the surface. The immediate drill target now covers an area at least 2000 feet long by 500 feet wide.
Drilling within this envelope is currently targeting features identified during a Self Potential (SP) survey carried out in 2001 that showed very distinct signatures over the high-grade RH Zone and the RH South Zone. The SP survey showed classic responses from the upper oxidized zone and over sulfides in the lower reduced part of the section. Proximity to strong north trending faults appears to be a controlling factor on grade distribution.
The mineralization discovered on the Gunman Project to date, strongly resembles the oxide zinc-silver-lead-gold bonanzas that have been historically mined in the Eureka district, located 40 miles SSW of the Gunman property.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-2004 LaPointe, D.D. Nevada Bureau of Mines and Geology
Editor 01-SEP-2007 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.