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Keynot Mine

Plant in Inyo county in California, United States with commodities Copper, 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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10139610
MRDS ID M024190
MAS/MILS ID 0060271257
Record type Site
Current site name Keynot Mine
Alternate or previous names Keynote Mine, Golden Princess, War Eagle, Keynot, Mountain View, Mallard Duck
Related records 10036135

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -117.93592, 36.72136 (WGS84)
Elevation 2255
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Inyo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

New York Butte(quadrangle 1:24,000 scale)

Saline Valley(quadrangle 1:100,000 scale)

Death Valley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eureka-Saline Valleys(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Inyo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 014 S 037 E 15 California

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Primary

Materials information

Materials Type of material
Chalcopyrite Unknown
Gold Unknown
Silver Unknown

Nearby scientific data

Main Entrance (1) -117.93592, 36.72136
ListMap

Economic information

Ore body information

  • Strike N55W
    Dip 40W
    Length 1245M
    Width 0.7M
    Area 50HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 SERICITIC
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Strike And Dip N55W:40W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 50
    Date of Last Modification 830627

Comments on the geologic information

  • THE ORE FROM THE KEYNOT VEINS CONSIST PRIMARILY OF FINE- GRAINED FREE GOLD INTIMATELY ASSOCIATED WITH CHALCOPYRITE AND PYRITE. WHEN VISABLE, THE GOLD TYPICALLY OCCURS AS "NUGGETS", USUALLY LESS THAN 3 MM ACROSS; BORDERING, AND AS INCLUSIONS WITHIN, CHALCOPYRITE AND PYRITE CRYSTALS. IN ONE LOCATION UNDERGROUND, CRYSTALLINE GOLD FOLLOWING FRACTURES IN THE QUARTZ WAS OBSERVED. ACCESSORY ORE MINERALS CONSIST OF SILVER, PROBABLY ASSOCIATED WITH GALENA, AND MINOR SPHALERITE, MALACHITE, AND AZURITE. GANGUE MINERALS CONSITS OF QUARTZ, SERICITE, KA0- LINITE, PYRITE, AND ARSENOPYRITE. SULFIDE MINERALIZATION IS LOCALIZED, SEPARATED BY ZONES OF BARREN OR NEARLY BARREN BULL QUARTZ.
  • THE KEYNOT VEIN SYSTEM OCCURS AS FISSURE FILLINGS IN THE JURASSIC-TRIASSIC PAT KEYS PLUTON OF THE HUNTER MOUNTAIN QUARTZ MONZONITE. THE KEYNOT VEIN SYSTEM IS COMPOSED OF FOUR MAJOR VEINS WHICH STRIKE N 40-70 W AND DIP 25-55 SW. THE KEYNOT VEIN HAS A SURFACE LENGTH OF 1980 M AND AVERAGE VEIN THICKNES OF 0.6 M. THE WAREAGLE IS EXPOSED FOR 1500 M, AVERAGING 1 M THICK, EAST VEIN IS 500 M LONG AND 0.6 M THICK, AND WEST VEIN IS 1000 M LONG AND 0.5 M THICK.

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1878
Year of first production 1878
Plant type Beneficiation (Mill)
Plant subcategory Hydromet

Mining district

District name Beveridge

Mineral rights holdings

Type of mineral rights Located Claim
Type of mineral rights Private Lease

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner-Operator
    Owner Far West Exploration
    Interest 100
    Year 1983
  • Type Owner
    Owner Douglas D. Mcfarland,
    Home office Bishop, Ca.
    Year 1984

Production statistics

  • Year 1938
    Description Total Gold Ore Produced Up To This Year 500000 Dollars Of Gold Ore

Comments on the production information

  • DAILY PRODUCTION FROM 225 MT OF DUMP ORE WILL BE 1296 G GOLD AND 2086 G SILVER. DAILY PRODUCTION FROM 100 MT OF MINE ORE WILL BE 1225 G GOLD 1584 G SILVER, AND 1.68 MT OF 10% COPPER CONCENTRATE.

Comments on the reserve resource information

  • M1C1=N/CUM (MATRIX ONE COLUMN ONE IS NONCUMULATIVE). MATRIX ONE CONTAINS THE INDICATED ORE FROM THE MINE DUMP. M2C1=M2C2

Workings at the site

  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method STRIP-HILLSIDE
    Swell Factor .6
    Percent Waste Rock 99.9
    Avg. Overburden Thickness 0
    Hardness of Ore SAND, GRAVEL
    Capacity 250
    Capacity Units MT ORE/DAY
    Unit Production Cost 1.13
    Units of Production $/MT ORE
    Operating Days per Year 168
    Operating Shifts per Day 3
    Year of Information 1982
  • Type of workings Underground
    Length 931M
    Overall depth 113M
    Field Value
    MAS Development Schedule # 2
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN STOPE
    Percent Waste Rock 99.8
    Percent Recovery 80
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 1
    Length of Inclines (m) 113
    Number of Inclines 1
    Avg. Length of Adits (m) 133
    Number of Adits 5
    1st Condition of Workings PART ACCESSIBLE
    2nd Condition of Workings CAVED AT PORTAL
    Capacity 100
    Capacity Units MT ORE/DAY
    Unit Production Cost 54.03
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 1
    Year of Information 1982

Reference information

Bibliographic references

  • Reference

    CALIFORNIA STATE MINERALOGIST REPORT, VOL. 12, P. 138.

  • Reference

    USGS TOPOGRAPHIC MAP NEW YORK BUTTE, INYO CO., CA. 1950.

  • Deposit

    U. S. BUREAU OF MINES OPNE-FILE REPORT MLA 18-85, 1985.

  • Deposit

    BURCHARD, HORATIO C., (1881) REPORT OF THE DIRECTOR OF THE

  • Deposit

    MINT UPON THE PRODUCTION OF PRECIOUS METALS IN THE UNITED

  • Deposit

    STATES FOR THE CALENDAR YEAR 1880-81, P. 39

  • Deposit

    BURCHARD, HORATIO C., (1883) REPORT OF THE DIRECTOR OF THE

  • Deposit

    STATES FOR THE CALENDAR YEAR 1882-83, P.159.

  • Deposit

    BURCHARD, HORATIO C., (1885) REPORT OF THE DIRECTOR OF THE

  • Deposit

    STATES FOR THE CALENDAR YEAR 1884-85, P. 101.

  • Deposit

    CRAWFORD, J. S., (1896) CALIF. STATE MINERALOGIST'S REPORT,

  • Deposit

    V. 12, P. 138.

  • Deposit

    CRAWFORD, J. S., (1896) ANNUAL REPORT: CALIF. STATE MINER-

  • Deposit

    ALOGIST'S REPORT, V. 13, P. 181.

  • Deposit

    FLINT, DELOS E., (1941) THE GEOLOGY OF THE BEVERIDGE MINING

  • Deposit

    DISTRICT, CALIFORNIA: UNPUBLISHED MASTER'S THESIS,

  • Deposit

    NORTHWESTERN UNIVERSITY, EVANSTON, IL.

  • Deposit

    KNOPF, ADOLF, AND KIRK, EDWIN, (1918) A GEOLOGIC RECONNAIS-

  • Deposit

    SANCE OF THE SOUTHERN SIERRA NEVADA, CALIFORNIA, WITH A

  • Deposit

    SECTION ON STRATIGRAPHY OF THE INYO RANGE: USGS PP. 110.

  • Deposit

    KNOPF, ADOLF, (1912) USGS BULL. 5401 PP. 111-112.

  • Deposit

    LEECH, EDWARD O., (1890) REPORT OF THE DIRECTOR OF THE MINT

  • Deposit

    UPON THE PRODUCTION OF PRECIOUS METALS IN THE UNITED

  • Deposit

    STATES FOR THE CALENDAR YEAR 1889-1890, P. 99.

  • Deposit

    ROSS, DONALD C., (1967) GENERALIZED GEOLOGIC MAP OF THE INYO

  • Deposit

    MTNS REGION, CALIFORNIA: USGS MAP I-506.

  • Deposit

    ROSS, DONALD C., (1967) GEOLOGIC MAP OF THE WACOUBA QUAD:

  • Deposit

    USGS MAP CQ-612.

  • Deposit

    TUCKER, W. B., (1926) THE PRODUCTION OF PRECIOUS METALS IN

  • Deposit

    THE UNITED STATES FOR THE CALENDAR YEAR 1888-89: CALIF

  • Deposit

    STATE MINERALOGIST'S REPORT P. 99.

  • Deposit

    TUCKER, W. B., AND SAMPSON, R. J., (1928) MINERAL RESOURCES

  • Deposit

    OF INYO CO., CALIF.: CALIF. JOUR. OF MINES & GEOLOGY,

  • Deposit

    U. 34, NO. 4, PP. 404-405.

  • Deposit

    MCFARLAND, D.S., (1980) KEYNOT MINE PROJECT, GEOLOGIC REPORT

  • Deposit

    COMPANY REPORT, UNPUBLISHED.

Reporter information

Type Date Name Affiliation Comment
Reporter 30-AUG-93 Close, Terry J. U.S. Bureau of Mines

Beyond USGS

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

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.