1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Strawberry Mine

Past Producer in Madera county in California, United States with commodities Molybdenum, Tungsten
Map
XML
JSON
KML
A
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. Mineral rights holdings
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10115441
MRDS ID D001059
MAS/MILS ID 0060390001
Record type Site
Current site name Strawberry Mine
Alternate or previous names Strawberry-Macdougald Tungsten, Strawberry Tungsten Mine, Strawberry Tungsten Deposits

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -119.2888, 37.5499 (WGS84)
Elevation 2295
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Madera(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Timber Knob(quadrangle 1:24,000 scale)

Yosemite Valley(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper San Joaquin(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

Sierra 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 California Madera

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004 S 024 E 25 SE California

Comments on the location information

  • 31 MI. NE BY MOUNTAIN ROAD FROM BASS LAKE

Commodities

Commodity Importance
Molybdenum Secondary
Tungsten Critical Primary

Materials information

Materials Type of material
Powellite Ore
Scheelite Ore
Arsenopyrite Gangue
Calcite Gangue
Epidote Gangue
Garnet Gangue
Hornblende Gangue
Idocrase Gangue
Magnetite Gangue
Orthoclase Gangue
Plagioclase Gangue
Pyrite Gangue
Pyroxene Gangue
Quartz Gangue
Sphalerite Gangue
Wollastonite Gangue
Molybdenite Unknown

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble

Nearby scientific data

Main Entrance (1) -119.2888, 37.5499
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure name Sierra Nevada Batholith

Ore body information

  • General form IRREGULAR
    Strike S25E
    Dip 50S
    Thickness 3.4M
    Length 134M
    Width 75M
    Area 259HA
    Depth to top 150M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin METAMORPHISM
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Strike And Dip S25E:50S
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 1
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316

Controls for ore emplacement

  • Contact Zone

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1941
Mining method Open Stope - Sublevel
Year of first production 1943
Milling method Gravity

Mining district

District name Jackass

Mineral rights holdings

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

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner J. E. Cobb And J. A. Mcdougald, North Fork, Ca.
    ID 403143
    Interest 1
    Home office California
    Year 1981
  • Type Owner-Operator
    Owner Teledyne Tungsten Corp., Fresno, Ca., 93703
    ID 403143
    Interest 99
    Home office California
    Year 1981

Production statistics

  • Year 0
    Description Tons Tons Concentrate Produced Shipments Units Wo3
  • Year 1
    Description Mined Treated % Wo3 Pounds Units Wo3 Lbs/Yr % Wo3 Recovered
  • Year 1943
    Material Wo3
    Ore mined 4709.39mt
    Description 4,785 4,785 3.25 288,000 9,232 244000 Lbs/Yr 65.68 7,971
  • Year 1944
    Material Wo3
    Ore mined 10899.03mt
    Description 11,074 11,074 1.41 218,000 6,328 262000 Lbs/Yr 57.80 7,589
  • Year 1945
    Material Wo3
    Description 112,000 3,640 120000 Lbs/Yr 65.39 3,640
  • Year 1946
    Material Wo3
    Description 80,000 2,528 80000 Lbs/Yr 63.21 2,528
  • Year 1948
    Material Wo3
    Ore mined 2622.89mt
    Description 2,665 2,665 1.85 106,000 3,483 106000 Lbs/Yr 66.34 3,483
  • Year 1949
    Material Wo3
    Ore mined 1419.21mt
    Description 1,442 1,442 2.19 72,000 2,380 72000 Lbs/Yr 66.11 2,380
  • Year 1950
    Material Wo3
    Ore mined 2919.13mt
    Description 2,966 2,821 1.00 80,000 2,391 80000 Lbs/Yr 60.40 2,391
  • Year 1951
    Material Wo3
    Ore mined 10704.15mt
    Description 10,876 10,845 0.95 180,000 6,406 180000 Lbs/Yr 71.53 6,406
  • Year 1952
    Material Wo3
    Ore mined 10511.25mt
    Description 10,680 10,680 0.63 136,000 4,634 136000 Lbs/Yr 68.60 4,634
  • Year 1953
    Material Wo3
    Ore mined 12019.05mt
    Description 12,212 12,212 160,586 5,374 160586 Lbs/Yr 66.80 5,374
  • Year 1954
    Material Wo3
    Ore mined 17577.81mt
    Description 17,860 17,812 0.60 522,025 17,019 522025 Lbs/Yr 65.20 17,019
  • Year 1955
    Material Wo3
    Description 295,895 9,848 295895 Lbs 66.60 9,848
  • Year 1955
    Material Wo3
    Ore mined 22548.02mt
    Description 22,910 22,910 0.62 117,554 4,206 117554 Lbs 71.80 4,206
  • Year 1956
    Material Wo3
    Ore mined 12035.78mt
    Description 12,229 12,229 0.50 120,213 4,280 120213 Lbs 71.30 4,280
  • Year 1956
    Material Wo3
    Ore mined 2324.68mt
    Description 2,362 2,362 0.50 23,069 827 23069 Lbs 71.60 827
  • Year 1960
    Material Wo3
    Description 430348 Lbs/Yr 50.01 10,760
  • Year 1960
    Material Wo3
    Ore mined 11461mt
    Description 11,645 11,645 1.58 526,000 12,530 56581 Lbs/Yr 29.55 836
  • Year 1961
    Material Wo3
    Ore mined 13658.72mt
    Description 13,878 13,878 0.86 419,722 11,933
  • Year 1962
    Material Wo3
    Ore mined 18248.05mt
    Description 18,541 18,541 0.98 624,834 14,452 205480 Lbs 39.90 4,102
  • Year 1964
    Material Wo3
    Description 591622 Lbs 70.88 20,981
  • Year 1966
    Material Wo3
    Ore mined 22332.48mt
    Description 22,691 22,691 1.00 692,000 16,456 692000 Lbs/Yr 40.38 16,456
  • Year 1967
    Material Wo3
    Ore mined 18505.91mt
    Description 18,803 18,803 0.81 540,000 11,694 540000 Lbs/Yr 43.31 11,694
  • Year 1968
    Material Wo3
    Ore mined 14523.83mt
    Description 14,757 14,757 1.13 460,614 13,952 460600 Lbs/Yr 60.58 13,952
  • Year 1977
    Material Wo3
    Ore mined 40184.88mt
    Description 40,830
  • Year 1978
    Material Wo3
    Ore mined 71065.14mt
    Description 72,206 92,206 5,532,400 27,662 5532399 Lbs/Yr 10.00 27,662
  • Year 1979
    Material Wo3
    Ore mined 53157.62mt
    Description 54,011 61,452 3,163,920 40,543 3163899 Lbs/Yr 26.00 40,543
  • Year 1980
    Material Wo3
    Ore mined 95567.78mt
    Description 97,102 97,102 5,006,834 64,087 5006800 Lbs/Yr 25.60 64,087
  • Year 1981
    Material Wo3
    Ore mined 109379.06mt
    Description 111,135 111,135 6,560,740 73,349 6560699 Lbs/Yr 22.36 73,349
  • Year 1982
    Material Wo3
    Ore mined 44666.93mt
    Description 45,384 45,384 5,217,299 68,764 5217300 Lbs/Yr 26.36 68,764
  • Year 1983
    Material Wo3
    Ore mined 84450.26mt
    Description 85,806 85,806 5,379,720 56,632 5379699 Lbs/Yr 21.05 56,632
  • Year 1984
    Material Wo3
    Ore mined 113675.1mt
    Description 115,500 115,500 7,513,980 76,230 7513899 Lbs/Yr 20.29 76,230

Comments on the reserve resource information

  • RESERVES DEPLETED ACCORDING TO TELEDYNE UPON SHUTDOWN. HOWEVER, SOME UNDERGROUND RESERVES, REC. MATERIALS IN TAILS STILL THERE.
  • PERMANENT SHUTDOWN, MID - DECEMBER 1986. TELEDYNE TUNGSTEN CORP. GAVE UP OR DID NOT RENEW LEASE. MR. DON SMITH, NORTH FORK, CA REPRESENTS THE OWNERS (SMITH FAMILY). U.S. BUREAU of MINES FILES STATE THAT STRAWBERRY RESERVES DEPLETED AT TIME OF SHUTDOWN. HOWEVER NEGOTIATIONS TO REOPEN MINE, AND REWORK AND RECLAIM TAILS FAILED WHEN STATE (CALIFORNIA) REQUIRED BONDING THAT POTENTIAL NEW OPERATOR FELT WAS PROHIBITIVE. NO PUBLIC INFO AVAILABLE ON ORE GRADES/RESERVES, OR MATERIALS IN TAILINGS.

Workings at the site

  • Type of workings Underground
    Length 1388M
    Overall depth 75M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method SUBLEVEL 10-43
    Swell Factor .6
    Percent Waste Rock 37
    Percent Recovery 100
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics NO PLANES OF WEAKNESS
    Rock Support Chars. SUPPORTING
    Mine Support Chars. OTHER
    Number of Shafts 2
    Length of Inclines (m) 1220
    Slope of Inclines 9
    Number of Inclines 2
    Avg. Length of Adits (m) 93
    Number of Adits 5
    1st Condition of Workings OPEN
    Capacity 310
    Capacity Units MT ORE/DAY
    Unit Production Cost 27.44
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1981

Reference information

Bibliographic references

  • Deposit

    KRAUSKOPF, KONRAD B. TUNGSTEM DEPOSITS OF MADERA, FRESNO, AND TULARE COUNTIES, CALIFORNIA. CALIF. DIV. OF MINES SPECIAL REPORT 35, 1953, 82 PP.

  • General

    LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25.

  • Deposit

    NOKLEBERG, W. J. GEOLOGIC SETTING, PETROLOGY, AND GEOCHEMISTRY OF TUNGSTEN - BEARING SKARNS AT THE STRAWBERRY MINE, CENTRAL SIERRA NEVADA, CALIF. ECON. GEOL., VOL., 76, NO. 1, 1981, PP. 111 - 133.

  • Deposit

    NOKLEBERG, W. J.. GEOLOGY OF THE STRAWBERRY MINE ROOF PENDANT, CENTRAL SIERRA NEVADA, CALIFORNIA. SANTA BARBARA, UNIVERSITY OF CALIFORNIA, 1970, PHD DISSERTATION, 156 P.

  • Deposit

    NOKLEBERG, W. J., STRATIGRAPHY AND STRUCTURE OF THE STRAWBERRY MINE ROOF PENDANT CENTRAL SIERRA NEVADA, CALIFORNIA. U. S.GEOL. SURV. PP. 1154, 1981, 18 PP.

  • Deposit

    NOKLEBERG, W. J., ZONED SKARNS OF THE STRAWBERRY TUNGSTEN MINE ROOF PENDANT, CENTRAL SIERRA NEVADA, CALIFORNIA. GEOL. SOC. OF AMER. ABSTRA., VOL. 3, NO. 2, 1971, PP. 171-172.

  • Deposit

    PECK, D. L. GEOLOGIC MAP OF THE MERCED PEAK QUADRANGLE, CENTRAL SIERRA NEVADA, CALIFORNIA. U. S. GEOL. SURV. GEOLOGIC QUADRANGLE MAP, 1980, MAP GQ-1531.

  • Deposit

    TRENGOVE, RUSSEL R. INVESTIGATION OF THE STRAWBERRY TUNGSTEN DEPOSIT, MADERA COUNTY, CALIF. U. S. BUMINES R.I. 4543, 1949, 19 PP.

  • Deposit

    WYANT, DONALD G. AND MAX P. ERICKSON. TUNGSTEN DEPOSITS IN MADERA COUNTY CALIFORNIA. U. S. BUMINES PRELIMINARY REPORTS ON TUNGSTEN DEPOSITS IN MADERA COUNTY, 1942, 28 PP.

General comments

Subject category Comment text
Deposit WATER IS OBTAINED FROM A 91 M WELL. POWER IS GENERATED AT THE SITE. FIVE KM OF ACCESS ROAD WAS CONSTRUCTED FROM GRANITE CREEK CROSSING, TO THE MINE IN 1943.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-93 Lindsey, David S. U.S. Bureau of Mines
Reporter 01-MAY-74 Elliott, James E. U.S. Geological Survey HOST ROCKS FIXED, ASSOCIATED ROCK TYPE
Updater 04-OCT-91 Mosier, Dan U.S. Geological Survey AGE CHECKED
Editor 09-JUN-95 Mosier, Dan U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Updater 06-DEC-10 Causey, J. Douglas U.S. Geological Survey Combined info from Dep_ID 10008714 (D001059) and deleted that record.

Beyond USGS

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

Current status (per MSHA)

StatusAbandoned since 12/19/1986
MSHA mine ID0403143
Mine name (MSHA)Strawberry Mine
Current operatorTeledyne Tungsten
Mine typeUnderground (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

External references

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.