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  3. Mineral Resource Data System (MRDS)

Franklin Mine

Past Producer in Clear Creek county in Colorado, United States with commodities Silver, Gold, Zinc, 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. Materials information
  7. Mineral occurrence model information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Land status
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10263625
MAS/MILS ID 0080190033
Record type Site
Current site name Franklin Mine
Alternate or previous names Franklin Shaft No.87, Franklin Shaft No. 73, Franklin Mines also includes: Gem, Freighter's Friend, Alpha, Reilly, Freeman, Seaton, and Silver Ag

Comments on the site names

  • Franklin Mines also includes: Gem, Freighters Friend, Alpha, Reilly, Freeman, Seaton, and Silver Age mines

Geographic coordinates

Point of reference Geographic coordinates: Elevation UTM Precision Relative position Point location
Main Entrance -105.50587, 39.75999 (WGS84) 3779 100
(click for info)
Main Entrance -105.50726, 39.76027 (WGS84) 3779 100

Site location context

Political divisions (FIPS codes)

Clear Creek(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Central City(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)

Geographic areas

Country State County
United States Colorado Clear Creek

Comments on the location information

  • In Gilson Gulch, east of Seaton Mtn., about 1-1/2 miles north of Idaho Springs, near the center of sec. 25, T 3 S, R 73 W.

Commodities

Commodity Importance
Silver Primary
Gold Primary
Zinc Critical Primary
Lead Primary
Copper Secondary

Comments on the commodity information

  • Average assays from 130 lots representing 1,374 tons of ore, produced between 1888 and 1910, showed average gold content of 0.146 oz/ton, silver 22.74 oz/ton, with up to 38% lead and 18% zinc.

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Silver Ore
Sphalerite Ore
Tetrahedrite Ore
Quartz Gangue
Rhodochrosite Gangue

Mineral occurrence model information

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

Nearby scientific data

Main Entrance (1) -105.50587, 39.75999
ListMap
Main Entrance (2) -105.50726, 39.76027
ListMap

Economic information

Comments on the geologic information

  • Lead-zinc fissure vein trends E-W and dips to N; associated with porphyry dikes, cutting Precambrian gneiss.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Idaho Springs District

Land status

Ownership category Private

Comments on the ownership information

  • Franklin Mining. Inc. (2006)

Comments on the production information

  • One of the more productive mines in the district, the mine is credited with output valued at more than $1 milllion before 1900. It was worked more recently in the 1980s.

Comments on the reserve resource information

  • A modest resource was reported in 1997 of 177,000 tons grading 0.38 oz/ton gold, 0.70 oz/ton silver, 0.5% copper, 4% lead, and 4% zinc. (USGS OFR 98-206)

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-1983 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Updater 05-MAY-2006 Beach, Richard A. Colorado Geological Survey
Updater 20-JUN-0007 Melton, Greg U.S. 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.