Helen

Occurrence in Clallam county in Washington, United States with commodity Manganese
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. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10055852
MRDS ID SP00051
Record type Site
Current site name Helen

Geographic coordinates

Geographic coordinates: -124.00018, 48.09285 (WGS84)
Elevation 581
Relative position NEAR CENTER OF SECTION

Site location context

Political divisions (FIPS codes)

Clallam(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Snider Peak(quadrangle 1:24,000 scale)

Cape Flattery(quadrangle 1:100,000 scale)

Cape Flattery(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Hoh-Quillayute(hydrologic unit)

Washington Coastal(hydrologic accounting unit)

Oregon-Washington Coastal(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Olympic 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 Washington Clallam

Public Land Survey System information

Meridian Township Range Section Fraction State
030N 010W 21 N2 Washington

Comments on the location information

  • THIS IS A DISTRICT RECORD
  • ABOUT 8.2 MILES WEST-NORTHWEST OF FAIRHOLM, ABOUT 0.8 MILES NORTH OF U.S. HIGHWAY 101

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Bementite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene

Nearby scientific data

(1) -124.00018, 48.09285

Economic information

Controls for ore emplacement

  • Mineralization Occurs As Lenses Near The Contact Between Basalt And Limestone (Data From U.S.G.S. Mrds, 1990). Manganese Deposits Of The Region Are Associated With Spilites (Park, 1942, P. 311-312) And Commonly Are Found With Reddish Pelagic Limestone Interbedded With The Basalt. Manganese Mineralization May Be Either Disseminated In Replacement Bodies Or Volcanogenic Exhalative/Diagenetic Bodies (Sorem And Gunn, 1967)

Comments on the geologic information

  • RED AGILLACEOUS LIMESTONE LENSES OCCUR ENCLOSED IN BASALT OF THE CRESCENT FORMATION. WITHIN THE LIMESTONE LENSES, BOULDER-LIKE MASSES OF BROWN TO BLACK MANGANIFEROUS MINERALS ARE FOUND ASSOCIATED WITH NODULES OF FERRUGINOUS QUARTZ. TWO BEMENTITE ORE BODIES ARE 30FT X 6FT AND 23FT X 6FT (DATA FROM U.S.G.S. MRDS, 1990). THE CRESCENT FORMATION, WHICH HOSTS MANGANESE MINERALIZATION ON THE OLYMPIC PENNINSULA, CONSISTS OF PALEOCENE? AND EOCENE PILLOW BASALTS COMPOSITIONALLY SIMILAR TO THAT OF OCEAN RIDGE BASALTS. THE BASALTS ARE ASSOCIATED WITH PELAGIC LIMESTONES, INDICATING DEPOSITION IN DEEP WATER (SNAVELY, 1987, P. 306-308).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on development

  • ECON.COM: SEE INDIVIDUAL MINES OF THE REPULIC DISTRICT
  • ECON.COM: PRODUCED A TEN TON SHIPMENT IN 1952 AND SOME PRODUCTION IN 1954 (DATA FROM U.S.G.S. MRDS, 1990)

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit HOST ROCKS FOR GOLD DEPOSITS OF THE REPUBLIC DISTRICT ARE DACITE AND ANDESITE FLOWS, FLOW BRECCIAS, TUFFS AND TUFF BRECCIAS OF THE EOCENE SANPOIL VOLCANICS (MUESSIG, 1967, P. 50-51; TSCHAUDER, 1989, P. 242). ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1991 Berger, Mary A. U.S. Geological Survey
Updater 01-JUL-1992 Frank, Dave U.S. Geological Survey

Beyond USGS

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