Fool Hen Property

Occurrence in Beaverhead county in Montana, United States with commodity Tungsten
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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10019525
MRDS ID DC10748
Record type Site
Current site name Fool Hen Property
Alternate or previous names Foolhen

Geographic coordinates

Geographic coordinates: -113.12951, 45.81822 (WGS84)
Elevation 2310
Relative position 2 MI. SE OF CALVERT MINE

Site location context

Political divisions (FIPS codes)

Beaverhead(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Foolhen Mountain(quadrangle 1:24,000 scale)

Wisdom(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Hole(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Beaverhead-Deerlodge 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 Montana Beaverhead

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 001N 012W 19,20 Montana

Commodities

Commodity Importance
Tungsten Critical Tertiary

Materials information

Materials Type of material
Scheelite Ore
Actinolite Gangue
Calcite Gangue
Epidote Gangue
Garnet Gangue
Mica Gangue
Quartz Gangue
Tourmaline Gangue

Analytical data

Result SAMPLES ASSAYED FROM A TRACE TO 0.54% WO3.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Pioneer Batholith
    Rock description Pioneer Batholith
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Missoula
    Rock description Missoula

Nearby scientific data

(1) -113.12951, 45.81822

Economic information

Geologic structures

Type of structure Local
Structure description Sediments Strike N25w To N25e, Vertically.

Ore body information

  • General form PODS, LENSES
    Length 24.38M
    Width 7.62M

Controls for ore emplacement

  • Tactite Zone At Lst, Qtz Monzonite Contact

Comments on the geologic information

  • SCHEELITE GRAINS UP TO 1/8 INCH DIAMETER ARE IRREGULARLY DISSEMINATED THROUGH TACTITE. ; GEOL.DESC: 0.5% SCHEELITE AT BEST

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Calvert Hill District

Ownership information

  • Type Owner
    Owner Minerals Engineering Co. (Meco)
    Home office Grand Junction, Co.

Workings at the site

  • Type of workings Surface
    Overall length 426.72M
    Overall width 3.05M

Comments on the workings information

  • 1400 FT. OF BULLDOZER TRENCHES

Comments on development

  • MIN. EXP. CO. APPLIED FOR DMEA ASSISTANCE IN TUNGSTEN EXPLORATION, WORK PROPOSED INCLUDED TRENCHING AND DRILLING ALONG THE TACTITE ZONE.

Reference information

Bibliographic references

  • Deposit

    DMEA FILE 4840, 5 P.

  • Deposit

    MBMG BULL 85, P. 148.

  • Deposit

    DEFENSE MINERALS EXPLORATION ASSOCIATION FILE 4840.

  • Deposit

    1958 RECON DMEA-484

General comments

Subject category Comment text
Deposit TACTITE LENSES AND PODS RANGE IN SIZE FROM 80 X 25 TO STREAKS A FEW FEET LONG AND A FEW INCHES WIDE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-JUL-1980 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.