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Unnamed

Occurrence in Hill county in Montana, United States with commodities Copper, Lead, Zinc, Zirconium, Niobium (Columbium), Uranium, Titanium, Metal
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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. Host and associated rocks
  9. Nearby scientific data
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10019371
MRDS ID DC09839
Record type Site
Current site name Unnamed
Alternate or previous names Vermiculite Prospect

Geographic coordinates

Geographic coordinates: -109.71333, 48.16714 (WGS84)

Site location context

Political divisions (FIPS codes)

Hill(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bowery Peak(quadrangle 1:24,000 scale)

Rocky Boy(quadrangle 1:100,000 scale)

Havre(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Sandy(hydrologic unit)

Milk(hydrologic accounting unit)

Milk(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Montana Hill

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 28N 16E 19 SE4 OF NE4 Montana

Comments on the location information

  • LOCATION PLOTTED IS NAMED "VERMICULITE PROSPECT" ON USGS MAP I-237

Commodities

Commodity Importance
Copper Primary
Lead Primary
Zinc Critical Primary
Zirconium Critical Primary
Niobium (Columbium) Critical Primary
Uranium Primary
Titanium, Metal Critical Primary

Materials information

Materials Type of material
Pyrite Ore
Pyrrhotite Ore
Apatite Gangue
Biotite Gangue
Perovskite Gangue
Pyrochlore Gangue
Zircon Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Syenite

Nearby scientific data

(1) -109.71333, 48.16714
ListMap

Economic information

Controls for ore emplacement

  • See Comments

Comments on the geologic information

  • CONCENTRATE OF THE PORPHYRY INDICATES A POTENTIAL SOURCE OF ZIRCONIUM, NIOBIUM (COLUMBIUM), URANIUM, AND TITANIUM. LOCAL CONCENTRATIONS OF BIOTITE LED TO EXPLORATION FOR VERMICULITE IN THE 1920'S WITH UNFAVORABLE RESULTS, FOR THE MATERIAL IS ALTERED BIOTITE RATHER THAN VERMICULITE. ; GEOL.DESC: ALSO CONTAINS SULFUR: DISSIMENATED MINERALS
  • PORPHYRITIC POSTASSIC SYENITE AT THE HEAD OF BIG SANDY CREEK CONTAINS A SUBSTANTIAL QUANTITY OF DISSEMINATED SULFIDES, MOSTLY PYRITE AND PYRRHOTITE, IN AN AREA OF ABOUT 1000 TO 1500 FEET. THIS "PORPHYRY TYPE" SULFIDE DEPOSIT CONTAINS MINOR AMOUNTS OF COPPER, LEAD, AND ZINC, AND IS POTENTIALLY A SOURCE OF SULFUR. THE TYPICAL ROCK CONTAINS 2-6% OF SULFIDES BY WEIGHT BUT LOCALLY THE ROCK CONTAINS MORE THAN THIS AMOUNT. A GREAT NUMBER OF SILICATE-CARBONATE-SULFIDE PEGMATITES AND VEINS ARE SCATTERED THROUGHOUT THE PORPHYRY AND IN ADJOINING MONZONITE AND SKONKINITE, AND THEY ARE CHARACTERIZED BY A HIGHER PROPORTION OF GALENA AND CHALCOPYRITE TO IRON SULFIDES, THAN CONTAINED IN THE PORPHYRY, AND A HIGHER PROPORTION OF PYRRHOTITE TO PYRITE. THE CARBONATE-RICH FACIES (CARBONATITES) LOCALLY CONTAINS RARE-EARTH-BEARING CARBONATE MINERALS. ACCESSORY MINERALS IN THE PORPHYRITIC SYENITE INCLUDE ZIRCON, APATITE, BIOTITE, PERKOVSKITE, AND PYROCHLORE. IN ADDITION TO THE SULFIDES, A HEAVY-MINERAL

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on development

  • LOCAL CONCENTRATIONS OF BIOTITE LED TO EXPLORATION FOR VERMICULITE IN THE 1920'S WITH UNFAVORABLE RESULTS, FOR THE MATERIAL IS ALTERED BIOTITE RATHER THAN VERMICULITE.

Reference information

Bibliographic references

  • Deposit

    PECORA, 1957, USGS GEOL. MAP, WARRICK QUAD.

  • Deposit

    CONSV. DIV. COMP. DATE, 04-21-1961

General comments

Subject category Comment text
Deposit THE SYNONYM NAME IS TAKEN FROM USGS MAP I-237

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Conservation Division Files U.S. Geological Survey
Updater 01-FEB-1993 Frank, Dave U.S. Geological Survey

Beyond USGS

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

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