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Dutch John Lease

Occurrence in Okanogan county in Washington, United States with commodities Molybdenum, Tungsten, Copper, Iron
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  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 10111551
MRDS ID W017841
Record type Site
Current site name Dutch John Lease
Alternate or previous names Sherwood, Lodge, Texas Creek, Seneff
Related records 10253245

Geographic coordinates

Geographic coordinates: -120.05423, 48.21039 (WGS84)
Elevation 991
Location accuracy 100(meters)
Relative position ABOUT 4.25 MI SOUTHEAST OF CARLTON, Accurate Within Claim Area. Location Given Is At Adit Symbol

Site location context

Political divisions (FIPS codes)

Okanogan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Methow(quadrangle 1:24,000 scale)

Twisp(quadrangle 1:100,000 scale)

Concrete(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Methow(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States Washington Okanogan

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 031N 022E 02 W2 OF SW4; E2 OF NW4; W2 OF NE Washington

Comments on the location information

  • ON A SOUTHWEST-TRENDING RIDGE ABOUT 1 MI SOUTH OF TEXAS CREEK

Commodities

Commodity Importance
Molybdenum Primary
Tungsten Critical Secondary
Copper Tertiary
Iron Tertiary

Comments on the commodity information

  • AVERAGES 80% GARNET LOCALLY

Materials information

Materials Type of material
Chalcopyrite Ore
Hematite Ore
Magnetite Ore
Molybdenite Ore
Powellite Ore
Pyrite Ore
Scheelite Ore
Calcite Gangue
Epidote Gangue
Grossularite Gangue

Alteration

  • (Local) Limestone Beds Altered To Garnet.

Analytical data

Result <0.25% SCHEELITE

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Texas Creek Stock
    Rock description Texas Creek Stock
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Leecher Metamorphics;Leecher Metamorphics;Leecher Metamorphics;Leecher Metamorphics
    Rock description Leecher Metamorphics;Leecher Metamorphics;Leecher Metamorphics;Leecher Metamorphics

Nearby scientific data

(1) -120.05423, 48.21039
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Northeast Plunging Anticline, Small Drag Folds

Ore body information

  • General form BED
    Strike N50W-N85E
    Dip 15-35NE TO 30SE
    Thickness 2.74M
    Length 914.4M
    Width 304.8M

Controls for ore emplacement

  • Near Contact Between Metasedimentary Beds And Diorite

Comments on the geologic information

  • STRIKE ABOUT N60E AND DIP 30SE. MINOR DISCREPANCIES IN MAJOR STRUCUTURE ARE NOT UNCOMMON, BUT ARE MOST COMMON NEAR MEDASED-DIORITE CONTACT. THINLY LAMINATED BEDS ARE SLIGHTLY CRENULATED AND THERE WAS DEVELOPMENT OF NUMEROUS SMALL DRAG FOLDS ON NORTHWEST LIMB NEAR NOSE OF A MAJOR NORTHEAST PITCHING ANTICLINE. THERE ARE AT LEAST 10 GARNETIFEROUS BEDS EXPOSED FOR 3000 BY 1000 FT; 1-9 FT THICK AND AVG ABOUT 3 FT. SOUTH OF CABIN A 4 FT THICK GARNET BED COVERS ABOUT 800 SQ YDS, ON SURFACE. A 2-4 FT GARNET BED IS EXPOSED FOR 100 FT, 300 FT S20E OF CABIN. A 3-9 FT GARNET BED 340 FT S20E OF CABIN IS EXPOSED FOR 850 FT. SEVERAL SMALLER GARNET BEDS ARE EXPOSED IN GENERAL AREA. ABOUT 2000 FT EAST OF CABIN ARE SEVERAL SMALL EXPOSURES OF 1-5 FT GARNET BEDS. ABOUT 3000 FT N60E OF ABIN ARE SEVERAL 2-3 FT GARNET BEDS EXPOSED OVER 280 SQ YDS. GARNET BEDS PROBABLY RESULTED FROM ALTERATION AND REPLACEMENT OF LIME BEDS BY SOLUTIONS AND GASES GIVEN OFF DURING INTRUSION OF DIORITE. MOLYBDENITE
  • AND CHALCOPYRITE DO NOT CONSTITUTE ORE EXCEPT FOR SMALL AREAS SEVERAL FT IN DIAMETER THAT WOULD MAKE GOOD MO ORE. MUCH OF MAGNETITE OCCURS AS BLADED CRYSTALS, TO 1 IN. ACROSS, SHOWING WELL-DEVELOPED PARTING. COMMONLY, MAGNETITE CRYSTALS FORM RADIAL PATTERN. SCHEELITE IS SCATTERED THROUGHOUT GARNET ROCKS, AND THERE IS CONSIDERABLE VARIATION IN SCHEELITE CONTENT. SCHEELITE CRYSTALS RANGE FROM MINUTE SPECKS TO 0.25 IN. ACROSS. CONSIDERABLE POWELLITE, FROM OXIDATION OF MOLYBDENITE AND SCHEELITE, HAS FORMED IN GARNET BEDS.
  • TOP OF RIDGE AND UPPER PART OF NORTHWEST SLOPE IS THIN-BEDDED MICA SCHISTS, ARGILLITES, LIMESTONES, AND QUARTZITES. NORTHWEST OF RIDGE IS LARGE INTRUSIVE DIORITE (HORNBLENDE-BIOTITE GRANODIORITE TO QUARTZ MONZONITE AND HORNBLENDE DIORITE. DIORITE-METASEDIMENTARY CONTACT NOT EXPOSED, BUT APPROXIMATE CONTACT CAN BE TRACED FOR ABOUT 1500 FT AT NORTH END OF RIDGE. AT SOUTHERN END OF RIDGE, NEAR CABIN, NEAREST EXPOSURE OF DIORITE IS SEVERAL HUNDRED FT TO WEST. NARROW APLITE AND PEGMATITE DIKES, PROBABLY RELATED TO DIORITE, WERE INJECTED INTO AND BETWEEN METASEDIMENTARY BEDS TO PRODUCE A LIT-PAR-LIT EFFECT LOCALLY. GENERALLY, METASEDIMENTARY BEDS APPEAR TO LIE NEAR NOSE ON NORTHWEST LIMB OF AN ANTICLINE PITCHING NORTHEAST. FOR ABOUT 300 FT SOUTH OF CABIN BEDS STRIKE ABOUT N85E AND DIP 15-35NW, WITH DIPS PROGRESSIVELY INCREASING FROM SE TO NW. ON TOP OF RIDGE SOUTH OF CABIN BEDS STRIKE ABOUT N50W AND DIP 15-2ONE WHICH CONTINUES ALONG RIDGE TOP TO ITS NE END. ABOUT 3000 FT N60E OF CABIN BEDS

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Squaw Creek District

Land status

Ownership category State

Ownership information

  • Type Owner
    Owner Seneff, H. E.
    Home office Kirkland, Wa.
    Last year 1943
  • Type Owner
    Owner Sherwood, S. J.
    Home office Twisp, Wa
    Last year 1943
  • Type Owner
    Owner Lodge, W. L.
    Home office Soap Lake, Wa
    Last year 1943

Workings at the site

  • Type of workings Surface/Underground
    Overall length 43.28M

Comments on the workings information

  • 12 FT SHAFT ON TOP OF RIDGE 420 FT S20E FROM CABIN; ADIT AT NORTHEAST CORNER OF CABIN DRIVEN SOUTHEAST FOR 85 FT; ANOTHER ADIT 50 FT NORTHEAST OF 1ST ADIT DRIVEN SE FOR 35 FT (CAVED IN 1945); OPEN CUTS.

Comments on development

  • THREE 80-ACRE PROPERTIES.

Reference information

Bibliographic references

  • Analytical Data

    SRC.REF: N

  • Deposit

    HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 345.

  • Deposit

    CULVER, H.E., AND BROUGHTON, W.A., 1945, TUNGSTEN RESOURCES OF WASHINGTON: WASHINGTON DIVISION OF GEOLOGY BULLETIN 34, P. 51-52.

  • Deposit

    BUNNING, B.B., 1990, GEOLOGIC MAP OF THE EAST HALF OF THE TWISP 1:100,000 QUADRANGLE, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-9, SCALE 1:100,000.

  • Deposit

    LEMMON, D.M., U.S. GEOLOGICAL SURVEY, UNPUB DATA.

  • Deposit

    LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE UNITED STATES: U.S. GEOLOGICAL SURVEY MINERAL INVESTIGATIONS RESOURCES MAP MR-25.

  • Deposit

    KING, R.U., U.S. GEOLOGICAL SURVEY, UNPUB DATA.

General comments

Subject category Comment text
Deposit NO TUNGSTON ORE PRODUCTION. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit MRDS RECORDS D001390, D000671 HAVE BEEN MERGED WITH THIS RECORD AND DELETED
Deposit ORE SCATTED THROUGHOUT GARNET BEDS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-76 Weeks, Robert U.S. Geological Survey
Updater 01-SEP-82 Lawson, William A. (Evarts, Russell C.) U.S. Geological Survey
Updater 01-MAR-91 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

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

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