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Mill Creek Occurence

Occurrence in Deer Lodge county in Montana, United States with commodities Beryllium, Fluorine-Fluorite
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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. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10019502
MRDS ID DC10662
Record type Site
Current site name Mill Creek Occurence

Geographic coordinates

Geographic coordinates: -113.0898, 46.0785 (WGS84)
Elevation 2743
Relative position ABOUT 0.7 KM SE OF MT HAGGIN.

Site location context

Political divisions (FIPS codes)

Deer Lodge(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Haggin(quadrangle 1:24,000 scale)

Philipsburg(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Clark Fork(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Montana Deer Lodge

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 004N 012W 21,22 Montana

Comments on the location information

  • 7 MI SW FROM ANACONDA

Commodities

Commodity Importance
Beryllium Critical Primary
Fluorine-Fluorite Critical Tertiary

Materials information

Materials Type of material
Idocrase Ore
Calcite Gangue
Fluorite Gangue
Garnet Gangue
Quartz Gangue

Analytical data

Result LARGEST ZONE: 0.074 AND 0.119 % BEO

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Metamorphosed Limestone
    Rock description Metamorphosed Limestone
    Stratigraphic age (youngest) Late Cambrian

Nearby scientific data

(1) -113.0898, 46.0785
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Anaconda Range Area

Reference information

Bibliographic references

  • Deposit

    USBM R1 7148, P. 150-52

General comments

Subject category Comment text
Deposit THE STOCK IS 2.5 MI LONG AND 0.6 MI WIDE. THE CONTACT OF THE LIMESTONE AND GRANODIORITE EXTENDS FOR MORE THAN 2 MI ALONG THE S EDGE OF THE STOCK. THE LARGEST BERYLLIUM-BEARING ZONE OUTCROPS FOR 900 FT ACROSS A TRIBUTARY DRAW. A 50 FT WIDEAPLITE-PEGMATITE BODY OUTCROPS NEAR THE CENTER OF THE DRAW. THE ZONE IS 60-75% MASSIVE IDOCRASE AND 25-40% SCHIST. ANOTHER ZONE IS 800 FT DOWN THE SLOPE. IT STRIKES N85E AND DIPS 40 N. IT OUTCROPS FOR 147 FT AND AVERAGE THICKNESS IS 21 FT. THE IDOCRASE COMPRISES 50-70% OF THE ZONE. A FEW 100 FT W ON THE W SLOPE A THIRD BERYLLIUM-BEARING ZONE OCCURS. IT OUTCROPS FOR 250 E M110 FT. IT IS 30 FT THICK AND STRIKES N 82 E AND DIPS 61N. THE OUT CROP IS TERMINATED BY FOLD TO THE EAST. IT CONSISTS OF INTERCALATED BANDS OF MASSIVE IDOCRASE AND GNEISS. ANOTHER BERYLLIUM-BEARING ZONE OCCUR ABOUT 1 MI N AND 1 MI E.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-FEB-1984 Wise, Kristine K. (Elliott, James E.) U.S. Geological Survey

Beyond USGS

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

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