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  3. Mineral Resource Data System (MRDS)

Little Joe

Past Producer in Elko county in Nevada, United States with commodities Tungsten, Molybdenum
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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. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10098633
MRDS ID M233248
Record type Site
Current site name Little Joe
Alternate or previous names Tennessee Mountain

Geographic coordinates

Geographic coordinates: -115.65203, 41.79046 (WGS84)

Site location context

Political divisions (FIPS codes)

Elko(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tennessee Mountain(quadrangle 1:24,000 scale)

Jarbidge Mountains(quadrangle 1:100,000 scale)

Wells(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Bruneau(hydrologic unit)

Middle Snake-Boise(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Humboldt-Toiyabe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 045N 056E 15 Nevada

Commodities

Commodity Importance
Tungsten Critical Primary
Molybdenum Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Molybdenite Ore
Pyrite Ore
Scheelite Ore

Alteration

  • (Local) Silificiation, Tactite Zones

Mineral occurrence model information

Model code 42
USGS model code 14a
Deposit model name W skarn

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Coffeepot Stock
    Rock description Coffeepot Stock
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Early Cambrian
    Stratigraphic age (youngest) Early Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Tennessee Mountain Formation
    Rock description Tennessee Mountain Formation

Nearby scientific data

(1) -115.65203, 41.79046
ListMap

Economic information

Ore body information

  • General form IRREGULAR
    Dip METASOMATIC REPLACING FLUIDS
    Width 6.1M

Controls for ore emplacement

  • Proximity To Intrusive Contact

Comments on the geologic information

  • SILLS AND DIKES OF QTZ MONZONITE UP TO 20' THICK EXTEND OUT INTO THE SEDIMENTS. APLITE DIKES CUT THE SILLS & SEDIMENTS AND APPEAR TO BE LATE STAGE DIFFERENTIATES FROM THE QTZ MONZ. STOCK. THE SEDIMENTS HAVE BEEN PYROMETAMORPHOSED IN A ZONE 50- TO 100-FT. ALONG THE CONTACT OF THE STOCK. SCHEELITE OCCURS IN TACTITE ALONG THE CONTACTS OF THE STOCKS, DIKES, AND SILLS. BOTH AS LARGE MASSES AND AS DISSEMINATED GRAINS MOST OF THE SCHEELITE IS CONCENTRATED WITHIN 20 FT. OF THE STOCK AND WITHIN 5 FEET OF DIKES AND SILLS. SCHEELITE IS ALSO PRESENT IN CALCITE VEINLETS WHICH ARE LOCALLY ABUNDANT ENOUGH TO FORM STOCKWORKS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Island Mountain

Comments on development

  • SEVERAL CLAIMS, HELD BY S. MINK OF ELKO IN 1967. ACTIVE DEVELOPMENT WORK WAS BEING DONE FROM 1953 TO 1954.

Reference information

Bibliographic references

  • Deposit

    SMITH, R. M. (1976) MINERAL RESOURCES OF ELKO CO. NEV., USGS OPEN-FILE REPORT

  • Deposit

    BUSHNELL, K. (1967) GEOLOGY OF THE ROWLAND QUAD. NEV., NEV. BUREAU OF MINES BULL. 67

  • Deposit

    SCHILLING, J. (1968) MOLY RESOURCES OF NEVADA, USGS OPEN-FILE REPORT

General comments

Subject category Comment text
Deposit INTRUSIVE CONTACT WITH TACTITE ZONE CONTAINING SCHEELITE, WITH SOME MOLYBDENITE, CHALCOPYRITE & PYRITE
Deposit SEVERAL CLAIMS WERE HELD BY J. MINK OF ELKO IN 1967. ACTIVE DEVELOPMENT WORK WAS DONE DURING 1953-1954. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1979 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.