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Seventy-Four

Occurrence in Snohomish county in Washington, United States with commodities Gold, Silver, Copper, Lead, Zinc, Arsenic, Antimony
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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. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Reserves and resources
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10048560
MRDS ID MP00157
Record type Site
Current site name Seventy-Four

Geographic coordinates

Geographic coordinates: -121.38621, 47.96899 (WGS84)
Elevation 1311
Relative position ABOUT 1 MI SOUTH OF MONTE CRISTO; ABOUT 0.8 MI EAST-SOUTHEAST OF SILVER LAKE

Site location context

Political divisions (FIPS codes)

Snohomish(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Monte Cristo(quadrangle 1:24,000 scale)

Skykomish River(quadrangle 1:100,000 scale)

Wenatchee(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sauk(hydrologic unit)

Puget Sound(hydrologic accounting unit)

Puget Sound(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Mt. Baker-Snoqualmie National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Henry M. Jackson Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Washington Snohomish

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 029N 011E 27 SW4 Washington

Comments on the location information

  • UNSURVEYED

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Lead Primary
Zinc Critical Primary
Arsenic Critical Tertiary
Antimony Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrrhotite Ore
Sphalerite Ore
Stibnite Ore
Quartz Gangue

Alteration

  • (Local) Andesite Is Bleached

Analytical data

Result SEVERAL SAMPLES ANALYZED BY JOHNSON AND OTHERS. MAX VALUES ARE 1.48 OZ/TON AU, 48.4 OZ/TON AG, 0.7% CU, 22% PB, 30% ZN, 10% AS, 0.75% SB

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Barlow Pass Volcanics
    Rock description Barlow Pass Volcanics
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene

Nearby scientific data

(1) -121.38621, 47.96899
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Local Shearing

Ore body information

  • General form VEIN
    Strike NE
    Dip NW

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Monte Cristo District

Land status

Ownership category National Forest
Area name In Mount Baker National Forest

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 2000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 11.717 g/mt Gold Major 1983
    Silver Ag 220.238 g/mt Silver Major 1983
    Copper Cu 0.17 wt-pct Copper Major 1983
    Lead Pb 4.1 wt-pct Lead Major 1983
    Zinc Zn 12.9 wt-pct Zinc Major 1983
    Arsenic As 0.98 wt-pct Arsenic Trace 1983
    Antimony Sb 0.16 wt-pct Antimony Trace 1983

Comments on the reserve resource information

  • INDICATED AND INFERRED, SUBECONOMIC RESERVES

Workings at the site

  • Type of workings Underground
    Length 35.97M

Comments on the workings information

  • ADIT

Reference information

Bibliographic references

  • Deposit

    JOHNSON, F.L., DENTON, D.K., IVERSON, S.R., MCCULLOCH, R.B., STEBBINS, S.A., AND STOTELMEYER, R.B., 1983, MINERAL RESOURCES OF THE GLACEIR PEAK RARE II AREA (NO. L6031), SNOHOMISH COUNTY, WASHINGTON: U.S. BUREAU OF MINES OPEN-FILE REPORT MLA 75-83, P. 7, 32.

  • Deposit

    HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 392.

  • Reserve-Resource

    JOHNSON AND OTHERS

General comments

Subject category Comment text
Deposit QUARTZ VEINS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1992 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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