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Seven-Up Pete Creek

Past Producer in Lewis and Clark county in Montana, United States with commodities Gold, Silver
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Reserves and resources
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10148908
MAS/MILS ID 0300490224
Record type Site
Current site name Seven-Up Pete Creek
Alternate or previous names Seven-Up Pete, Seven-Up Pete Venture Spv, Mcdonald Meadows / Mcdonald Gold Deposit

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -112.5631, 46.9591 (WGS84)
Elevation 1463
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Swede Gulch(quadrangle 1:24,000 scale)

Elliston(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Blackfoot(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Helena-Lewis and Clark 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 Lewis and Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 014 N 008 W 13 SWSWSW Montana

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Acanthite Ore
Electrum Ore
Gold Ore

Mineral occurrence model information

Model code 153
USGS model code 25c + 25d
Deposit model name Epithermal vein, quartz adularia
Mark3 model number 25

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Rock unit name Rhyolite ash-flow tuffs
    Stratigraphic age (youngest) Tertiary
  • Host or associated Associated
    Rock type
    Rock unit name ANDESITE
    Stratigraphic age (youngest) Tertiary

Nearby scientific data

Ore Body (1) -112.5631, 46.9591
ListMap

Economic information

Geologic structures

Type of structure Local
Structure name NORMAL FAULTS
Type of structure Regional
Structure name TWO, LARGE, WEST-DIPPING, LOW ANGLE THRUST FAULTS

Ore body information

  • General form TABULAR

Comments on the ore body information

  • NON-ORE MATERIAL- QUARTZ, CHALCEDONY, CALCITE, ADULARIA, PYRITE, MARCASITE, SPECULAR HEMATITE, GEOTHITE, JAROSITE, CRYPTOMELANE. LESS ABUNDANT MINERALS IN VEINS INCLUDE CHALCOPYRITE, COVELLITE, DIGENITE, GALENA, PYRRHOTITE, SPHALERITE, AND STROMEYERITE. SULFOSALTS INCLUDE FAMATINITE, PEARCEITE, POLYBASITE, PROUSTITE, PYARGYRITE, PETROVSKAITE, UYTENBOGAARDTITE, AND AN UNNAMED MINERAL (AG5AU2S2).
  • FAVORABLE DEPOSITIONAL HORIZONS CONSIST OF LEACHED PUMICE LAYERS AND STEEPLY DIPPING, INTERSECTING VEIN SYSTEMS. SOME CONTROL ON GOLD DEPOSITION WAS EXERTED BY STRUCTURAL TRENDS THAT ARE PARALLEL WITH THE ECLIPSE FAULT, AS WELL AS A N 15 W TREND THAT IS PARALLEL TO THE VEINS AT THE TOP OF EAST BUTTE. THE LOCATION OF THE MAIN MINERALIZED ZONE BENEATH EAST BUTTE APPEARS TO COINCIDE WITH THE INTERSECTION OF THESE TWO TRENDS. ALSO, PRESSURE/TEMPERATURE CONTROLS ON THE MINERALIZATION PROCESS ARE INDICATED BY THE PRESENCE OF DISTINCT MINERAL ASSEMBLAGES AT VARIOUS LEVELS IN THE DEPOSIT.

Comments on the geologic information

  • TWO, LARGE, WEST-DIPPING, LOW ANGLE THRUST FAULTS (THE SCAPEGOAT AND THE HOADLY) ARE PRESENT IN THE UPPER BLACKFOOT DRAINAGE. THEY STRIKE NORTHWEST TO SOUTHEAST AND HAVE DISPLACED PRECAMBRIAN BELT ROCKS AND PALEOZOIC ROCKS OVER YOUNGER PALEOZOIC AND MESOZOIC ROCKS.



    THE BLACKFOOT VALLEY IS FAULT CONTROLLED; THE MAIN STRUCTURE IS UNDER THE RIVER AND AGAINST THE SOUTH VALLEY MARGIN IN THE VICINITY OF MCDONALD.
  • NO EVIDENCE HAS BEEN FOUND WHICH INDICATES A LOCAL SOURCE FOR THE VOLCANIC ROCKS AT MCDONALD. ANDESITES MAY HAVE BEEN DERIVED FROM LOCAL FISSURE VENTS IN THE SEVEN-UP PETE AREA OR FROM A DISTANT SOURCE IN THE AVON AREA. THREE EPISODES OF RHYOLITIC ASH-FLOW VOLCANISM OCCURRED SUBSEQUENT TO THE ANDESITIC FLOWS. THE LITHIC TUFF AND CRYSTAL-RICH TUFF REPRESENT TWO COOLING UNITS DERIVED FROM THE SAME MAGMA; THESE ROCKS ARE THE MAJOR HOSTS FOR GOLD.THE LOWER TVS (TERTIARY VOLCANICLASTIC SEDIMENTS) UNIT WAS DEPOSITED AND IS COGENETIC WITH THE HYDROTHERMAL SYSTEM WHICH PRODUCED THE GOLD DEPOSIT AT MCDONALD. THE HYDROTHERMAL SYSTEM WAS EXTINCT BY THE TIME THE BIOTITE RHYOLITE WAS ERUPTED.

Economic information about the deposit and operations

Operation type Placer
Development status Past Producer
Commodity type Metallic
Significant Yes

Comments on exploration

  • EARLY 1980?S-ANACONDA COMPANY GEOLOGISTS EXPLORED IN THE AREA.

    1985-WESTERN ENERGY ACQUIRES ANACONDA COMPANY?S EXPLORATION PROPERTIES.

    1986-GEOLOGIC MAPPING BY WESTERN ENERGY COMPANY REVEALS HOT-SPRINGS MINERALIZATION.

    1987-TWO CORE HOLES DRILLED BY WESTERN ENERGY.

    1988-ADDWEST DRILLS ADDITIONAL EXPLORATION HOLES (APPROX. 8 HOLES) AFTER OPTIONING WESTERN ENERGY?S EXPLORATION PROPERTIES.

    1989-PHELPS DODGE JOINT VENTURES WITH ADDWEST; ADDWEST PURCHASED BY CANYON RESOURCES; FORM SEVEN-UP PETE JOINT VENTURE (SPJV).

    1989-SEVEN-UP PETE JOINT VENTURE `DISCOVERS? DEPOSIT.

    1991-SPJV PURCHASES PROPERTY FROM WESTERN ENERGY COMPANY.

    END OF 1992-OVER 494 DRILL HOLES TOTALING OVER 113,000 M OF DRILLING, BULK SAMPLING, SOIL GEOCHEMISTRY, GEOPHYSICS, METALLURGICAL TESTING, ENGINEERING AND ENVIRONMENTAL STUDIES HAS BEEN CONDUCTED. SEVEN-UP PETE JOINT VENTURE IS 72.25% PHELPS DODGE MINING COMPANY AND 27.75% CR MONTANA CORPORATION, A WHOLLY-OWNED SUBSIDARY OF CANYON RESOURCES CORPORATION. IN 1992, 52,680 M OF DRILLING WAS COMPLETED (232 HOLES).

    1994-PLAN OF OPERATIONS SUBMITTED AND PERMIT COMPLETED IN 1995.

    1997-CANYON RESOURCES PURCHASES PHELPS DODGE?S INTEREST IN MCDONALD.

    1998-ANTI-CYANIDE INITIATIVE I-137 PASSED IN MONTANA IN NOVEMBER 1998. THE LEGALITY OF THE INITIATIVE IS CHALLENGED.

    1999-FRANCO-NEVADA PROVIDES 3.5 MILLION TO MAINTAIN CLAIMS IN RETURN FOR A 4% NSR OR 1/3 OF PROCEEDS FROM ANY ?TAKINGS? LAWSUIT

Mining district

District name Seven-Up Pete

Land status

Ownership category National Forest

Ownership information

  • Type Owner-Operator
    Owner Phelps Dodge
    Interest 72.3
    Year 1996
  • Type Owner
    Owner Canyon Resources Corp
    Interest 27.8
    Year 1996

Reserves and resources

  • Type In-situ
    Estimate year 1996
    Total resources 9070000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.99 g/mt Gold Major 1996

Comments on the reserve resource information

  • 375 Mt AT AN AVERAGE GRADE OF 0.67% G/T GOLD AT A CUTOFF GRADE OF 0.27 G/T.



    RESERVES AND COSTS ANNOUNCED IN 1994:

    8.2 MILLION OUNCES OF GOLD IN 414 TONS OF ROCK WITH AN AVERAGE GRADE OF 0.020 OPT AU.



    AT A GOLD PRICE OF $375 PER OUNCE, THE FEASIBILITY STUDY CONTEMPLATES THE PRODUCTION OF 3.75 MILLION OUNCES OF GOLD AND APPROXIMATELY 8.0 MILLION OUNCES OF SILVER OVER A 12 YEAR TIME PERIOD. ANOTHER PRESS RELEASE IN SEPTEMBER OF 1999 ESTIMATES A TOTAL OF 9.9 MILLION OUNCES OF GOLD AND 30 MILLION OUNCES OF SILVER CONTAINED AT MCDONALD. MINEABLE RESERVES ARE ESTIMATED AT 4.9 TO 7.2 MILLION OUNCES OF GOLD, DEPENDING ON THE PRICE OF GOLD.



    OTHER SCENARIOS: DEPENDING ON THE MARKET PRICE OF GOLD - @ $375 PER OUNCE, 645 MILLION TONS OVER 14 YEARS.

    @ $600 PER OUNCE, 980 MILLION TONS OVER 18 YEARS.



    PRODUCTION COSTS WOULD BE $231 PER OUNCE.



    CAPITOL COSTS WOULD BE $188 MILLION PRIOR TO PRODUCTION AND AN ADDITIONAL $74 DURING THE MINE LIFE FOR CAPITOL FOR EQUIPMENT REPLACEMENT AND PAD EXPANSIONS.



    5,400 ACRES IN PERMIT AREA.



    RESULTS OF AN ORDER-OF-MAGNITUDE FEASIBILITY STUDY IN 1991 ESTIMATED 168 MT AT AN AVERAGE GRADE OF 1.0 G/T GOLD. PRODUCTION RATES WERE ESTIMATED AT 27,000 AND 41,000 TONS PER DAY. A YEAR LATER A PRELIMINARY FEASIBILITY INDICATED 189 MT AT AN AVERAGE GRADE OF 0.9 G/T AT STRIPPING RATIO OF 2.1 TO 1. METALLURGICAL TESTING INDICATED THAT 76 PERCENT OF THE GOLD COULD BE RECOVERED FROM MINUS 12.7-MM CRUSHED ORES AND THAT LOW-GRADE MATERIAL WAS POTENTIALLY ECONOMIC IF LEACHED AT RUN-OF-MINE SIZES.

Reference information

Bibliographic references

  • Ownership

    CANYON RESOURCES CORPORATION FORM 10-K. DEC. 31, 1995. PP.14,16.

  • Geology

    BARTLETT, M.W., ENDERS, M.S., VOLBERDING, J.E., AND WILKINSON, W.H., 1995, THE GEOLOGY OF THE MCDONALD GOLD DEPOSIT, LEWIS AND CLARK COUNTY, MONTANA, IN GEOLOGY AND ORE DEPOSITS OF THE AMERICAN CORDILLERA; SYMPOSIUM PROCEEDINGS, A.R. COYNER AND P.L. FAHEY (EDS): GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 981-1000.

  • Geology

    ENDERS, M.S., BARTLETT, M.W., COFFIN, G.C., VOLBERDING, J.E., AND YOUNG, D.P., 1995, DISCOVERY OF THE MCDONALD GOLD DEPOSIT: MINING ENGINEERING, V. 47;10, P. 916-921.

  • Deposit

    PAY DIRT, DEC., 1991, P. 9A.

  • Reserve-Resource

    CANYON RESOURCES CORPORATION FORM 10-K. DEC. 31, 1995. P16.

  • Geology

    ENDERS, M.S., BARTLETT, M.W., COFFIN, G.C., VOLBERDING, J.E., AND YOUNG, D.P., 1995, DISCOVERY OF THE MCDONALD GOLD DEPOSIT, LEWIS AND CLARK COUNTY, MONTANA: SOCIETY FOR MINING, METALLURGY, AND EXPLORATION, INC, PRE-PRINT 95-225, 9 P.

  • Deposit

    MBMG MEM 26,1948P67

  • Deposit

    ROCKY MTN PAY DIRT, 8-93, P.18A.

  • Deposit

    PHELPS DODGE NEWS RELEASE 6-1-94.

  • Deposit

    THE MINING RECORD, V106 N17, 4-26-95, P.8.

  • Deposit

    CANYON RESOURCES CORP NEWS RELEASE 1-31-91 AND 5-29-91.

General comments

Subject category Comment text
Deposit THE SEVEN-UP PETE JOINT VENTURE INCLUDES THE SEVEN-UP PETE GOLD DEPOSIT, THE MCDONALD GOLD DEPOSIT, AND THE KEEP COOL EXPLORATION PROPERTY (0300490223).
Deposit DEPOSIT HAS A MINIMUM STRIKE LENGTH OF 2,100 M AND AND AVERAGE THICKNESS OF 140 M. DEPOSIT IS NEARLY TABULAR, STRATIFORM BODY THAT DIPS 20 TO 25 DEGREES TO THE NORTH.
Deposit SIX TYPES OF ALTERATION RECOGNIZED FROM PETROGRAPHIC STUDIES OF CORE:

1. DEVITRIFICATION

2. ARGILLIZATION

3. SILICIFICATION* AND

4. QUARTZ-ADULARIA (POTASSIC) ALTERATION*

5. LEACHED ZONES

6. ALBITIZATION

*= DOMINANT FORMS OF ALTERATION WITHIN THE MINERALIZED ZONES

SUPERGENE OXIDATION TO A DEPTH OF 300 TO 350 M BELOW THE SURFACE.
Deposit Merged Data from Deposit ID 10048812 (Mcdonald Meadows)

Reporter information

Type Date Name Affiliation Comment
Reporter 17-JAN-1997 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

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

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Phelps Dodge — acquired by Subsidiary of Freeport-McMoRan (2007)
    Acquired by Freeport-McMoRan Copper & Gold in 2007 in what was then the largest mining-industry deal ever (~US$26 B).

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

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