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Frenchie Creek Prospect

Occurrence in Eureka county in Nevada, United States with commodity Iron
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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. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10044728
MRDS ID M232303
Record type Site
Current site name Frenchie Creek Prospect

Geographic coordinates

Geographic coordinates: -116.29036, 40.3563 (WGS84)

Site location context

Political divisions (FIPS codes)

Eureka(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Thatcher Spring(quadrangle 1:24,000 scale)

Crescent Valley(quadrangle 1:100,000 scale)

Winnemucca(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)

Geographic areas

Country State County
United States Nevada Eureka

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 029N 050E 25 Nevada

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore

Alteration

  • (Local) Volcanics Silicified, Kaolinized, & Brecciated Near Orebodies

Analytical data

Result SEE SHAWE, ET AL (1962) P. 101

Mineral occurrence model information

Model code 158
USGS model code 25i
Deposit model name Volcanic-hosted magnetite

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Frenchie Creek Rhyolite And Andesite
    Rock description Frenchie Creek Rhyolite And Andesite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -116.29036, 40.3563
ListMap

Economic information

Ore body information

  • General form TABULAR

Controls for ore emplacement

  • Discontinuous Silicified Shear Zones

Comments on the geologic information

  • MAGNETITE LOCALIZED ALONG SHEAR ZONES THAT STRIKE N65E, DIP 75N IN ANDESITE AND LATITE TUFF. THE IRON WAS PROBABLY DERIVED FROM DEUTERICALLY ALTERRED LOWER CRET. PLUTONIC ROCK, AND TRANSPORTED AS HYDROTHERMAL FLUIDS. (MUFFLER, L. J.). MOST OF EXPOSED ROCK IS A BRECCIATED TUFF CEMENTED AND PARTIALLY REPLACED BY MAGNETITE. PRINCIPAL IRON MINERALIZATION PROBABLY RELATED TO THAT AT THE BARTH & MODARELLI DEPOSITS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1951

Mining district

District name Modarelli-Frenchie Creek District

Land status

Ownership category Private

Comments on development

  • AREA OF IRON ORE DEPOSITS EXTENDS UP EAST SIDE OF CANYON FOR 1000 FT. IN ELEVATION CHANGE. GROUND MAGNETICS WAS USED TO MAP THE DEPOSIT, BY E. L. STEPHENSON IN 1951.

Reference information

Bibliographic references

  • Deposit

    ROBERTS, R. J., ET AL (1967) GEOLOGY AND MINERAL RESOURCES OF EUREKA CO., NEV. BUR. OF MINES BULL. 64

  • Deposit

    USBM (WINNEMUCCA) MILS NO. 83, REFERENCE NO. 3201100161

  • Deposit

    SOUTHERN PACIFIC CO. (1964) MINERALS FOR INDUSTRY, P. 92

  • Deposit

    MUFFLER, L. J., (1964) GEOLOGY OF THE FRENCHIE CREEK QUADRANGLE, NEV., USGS BULL 1179

  • Deposit

    SHAWE, F. R., REEVES, R. G., KRAL, V. E. (1962) IRON ORE DEPOSITS OF NEVADA, PART C., N.B.M. BULL. 53

General comments

Subject category Comment text
Deposit MAGNETITE LOCALIZED ALONG SHEAR ZONES IN COLVANICS
Deposit THE AREA OF IRON ORE DEPOSITS EXTENDS FROM CANYON BOTTOM UP THE EAST SIDE OF THE CANYON FOR OVER 1000 FEET IN VERTICAL ELEVATION. GROUND MAGNETICS WAS USED TO MAP THE DEPOSIT BY E. L. STEPHENSON-GEOPHYSICIST IN 1951 ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1980 Kirkham, Richard A. 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.