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Marietta

Prospect in Clear Creek county in Colorado, United States with commodities Gold, Silver, Lead, Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Mineral occurrence model information
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Bibliographic references
  11. Reporter information

Geologic information

Identification information

Deposit ID 10311039
Record type Site
Current site name Marietta
Alternate or previous names Mary Etta Group (Gold Belt or Golden Belt tunnel, Hamill tunnel, Mary Etta, Silver Plume tunnel and , Silverleaf

Comments on the site names

  • Marietta lies about 1 mile SSW of the Mary Etta group in the valley of Clear Creek; it is not clear if the Marietta is part of the Mary Etta group.

Geographic coordinates

Geographic coordinates: -105.78227, 39.67749 (WGS84)
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Clear Creek(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Grays Peak(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Clear(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Arapaho and Roosevelt National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Clear Creek

Comments on the location information

  • Adit located on NW side of Ganley Mountain at 11,700 feet elevation, in NE/4 sec. 28, T 4 S, R 75 W, about 3 miles WSW of Silver Plume.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Secondary
Copper Secondary

Comments on the commodity information

  • On the basis of sample assays.

Mineral occurrence model information

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

Nearby scientific data

(1) -105.78227, 39.67749
ListMap

Economic information

Comments on the geologic information

  • The Marietta vein strikes NE and dips SE; it is a 6-in. quartz vein in altered granite.

Economic information about the deposit and operations

Development status Prospect

Mining district

District name Argentine District

Comments on the production information

  • Reportedly, 25 tons of ore produced about 1900.

Reference information

Bibliographic references

  • Deposit

    Lovering, T. S., 1935, Geology and ore deposits of the Montezuma quadrangle, Colorado: U.S. Geological Survey Professional Paper 178, 119 p.

  • Deposit

    Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-JAN-06 Beach, Richard A. Colorado Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.