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Bertha Prospect

Occurrence in Clallam county in Washington, United States with commodities Manganese, 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. 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. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10047866
MRDS ID M700200
Record type Site
Current site name Bertha Prospect
Related records 10277029, 10301635

Geographic coordinates

Geographic coordinates: -123.75211, 48.01729 (WGS84)
Elevation 1494
Location accuracy 250(meters)
Relative position ABOUT 4.5 MILES SOUTH OF EAST END OF LAKE CRESCENT

Site location context

Political divisions (FIPS codes)

Clallam(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lake Crescent(quadrangle 1:24,000 scale)

Port Angeles(quadrangle 1:100,000 scale)

Victoria(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Crescent-Hoko(hydrologic unit)

Puget Sound(hydrologic accounting unit)

Puget Sound(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Olympic National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State County
United States Washington Clallam

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 029N 008W 07 Washington

Comments on the location information

  • ABOUT 1 1/2 MILES WEST OF LIZARD HEAD PEAK ALONG THE HAPPY LAKE RIDGE TRAIL; JUST BELOW THE RIDGE CREST.

Commodities

Commodity Importance
Manganese Critical Primary
Iron Secondary

Materials information

Materials Type of material
Bementite Ore
Jasper Gangue

Analytical data

Result ASSAY (USBM TOOK 19 SAMPLES IN 1940): AVG. 10.3% MN, 20.5% FE, 38.9% IN SOL.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Metchosin Voleanics
    Rock description Metchosin Voleanics
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Metchosin
    Rock description Metchosin

Nearby scientific data

(1) -123.75211, 48.01729
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Small Left-Lateral Strike-Slip Fault, North Trending With 30 Ft Of Apparent Offset In The Second Ore Lens.

Ore body information

  • General form LENSES
    Dip NEAR VERTICAL
    Length 15.24M
    Width 12.19M

Controls for ore emplacement

  • Contact Between Basalt And Limestone

Comments on the geologic information

  • THE PRINCIPAL ROCKS ASSOCIATED WITH THE MN MINERALIZATION ARE ALTERED PILLOW BASALT, JASPER, SILICIFIED LIMESTONE, AND PHYLLITE. THESE ROCKS STRIKE EASTERLY AND DIP STEEPLY SOUTH. JOINTING AND FRACTURING GIVE THEM A BLOCKY APPEARANCE. TWO LENTICULAR BODIES OF MN SILICATES ARE CONFORMABLE WITH THE COUNTRY ROCKS. ONE IS INTERMITTANTLY EXPOSED FOR 230 FT AND RANGES FROM LESS THAN 1 FT TO 12 FT IN WIDTH. THE FOOT WALL IS BASALT, AND THE HANGING WALL IS JASPER AND RED, SILICEOUS LIMESTONE. THE SECOND LENS IS 25 FT SOUTH OF THE FIRST AN HAS AN EXPOSED AREA OF 60 BY 135 FT. A STEEPLY DIPPING FAULT NEAR THE CENTER OF THE LENS STRIKES NORTH AND HAS OFFSET THE WESTERN PART 30 FT TO THE SOUTH. HOST ROCKS SOUTH OF THIS LENS ARE THIN-BEDDED LIMESTONE AND SHALES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category National Park

Ownership information

  • Type Owner
    Owner Harry Sweeds, Et. Al, Port Angeles, Wash.

Comments on development

  • UNKNOWN DEVELOPMENT

Reference information

Bibliographic references

  • Deposit

    USGS BULL 931-R, P. 447-448

  • Deposit

    WASH. DMG BULL 37, P. 254

  • Deposit

    USGS RI 5530, P. 51-52

General comments

Subject category Comment text
Deposit THE MANGANIFEROUS MATERIAL IS A DENSE, BLACK, IRON-RICH SILICEOUS ROCK WITH SPARSELY DISTRIBUTED BANDS OR VEINLETS OF BEMENTITE.
Deposit 1 CLAIM. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1982 Lawson, William A. (Evarts, Russell C.) U.S. Geological Survey

Beyond USGS

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

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