Tuscola

Occurrence in Snohomish county in Washington, United States with commodities Gold, Silver, Lead, Zinc, Copper, Arsenic, Antimony
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. Reserves and resources
  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 10048569
MRDS ID MP00167
Record type Site
Current site name Tuscola

Geographic coordinates

Geographic coordinates: -121.36454, 47.98621 (WGS84)
Elevation 1326
Relative position ABOUT 1.5 MI EAST OF MONTE CRISTO; ABOUT 3.2 MI NORTH-NORTHWEST OF BLANCA LAKE

Site location context

Political divisions (FIPS codes)

Snohomish(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Blanca Lake(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 23 SW4 Washington

Comments on the location information

  • UNSURVEYED

Commodities

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

Materials information

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

Alteration

  • (Local) Tonalite Is Bleached

Analytical data

Result SEVERAL ASSAYS. MAXIMIM VALUES ARE 0.458 OZ/TON AU, 5.3 OZ/TON AG, 0.1% CU, 2.78% PB, 4.8% ZN, 9.15% AS, 0.37% 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 Plutonic Rock > Granitoid > Tonalite
    Rock unit name Grotto Batholith
    Rock description Grotto Batholith
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene

Nearby scientific data

(1) -121.36454, 47.98621

Economic information

Geologic structures

Type of structure Local
Structure description Local Fractures

Ore body information

  • General form VEIN
    Strike N77E
    Dip 65NW
    Thickness 0.21M
    Length 67.06M

Controls for ore emplacement

  • Shearing

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 6.409 g/mt Gold Major 1983
    Silver Ag 36.706 g/mt Silver Major 1983
    Lead Pb 1.1 wt-pct Lead Major 1983
    Zinc Zn 0.7 wt-pct Zinc Major 1983
    Copper Cu 0.04 wt-pct Copper Major 1983
    Arsenic As 2.81 wt-pct Arsenic Trace 1983
    Antimony Sb 0.19 wt-pct Antimony Trace 1983

Workings at the site

  • Type of workings Underground
    Length 9.14M

Comments on the workings information

  • 2 ADITS

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 GLACIER PEAK RARE II AREA (NO. L6031), SNOHOMISH COUNTY, WASHINGTON: U.S. BUREAU OF MINES OPEN-FILE REPORT MLA 75-83, P. 25

  • Reserve-Resource

    JOHNSON AND OTHERS

General comments

Subject category Comment text
Deposit TWO PARALLEL QUARTZ VEINS, ONE OF WHICH CONTAINS SULFIDES AND THE OTHER OF WHICH IS BARREN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1992 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

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