1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Old Leyden Mine

Past Producer in Jefferson county in Colorado, United States with commodities Coal, Uranium
Map
XML
JSON
KML
C
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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10013508
MRDS ID D009853
Record type Site
Current site name Old Leyden Mine

Geographic coordinates

Geographic coordinates: -105.23114, 39.84999 (WGS84)
Elevation 1859
Relative position 6.6 MILES N 02DEG W FROM GOLDEN

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Golden(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 Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 002S 070W 28 NW OF NW OF NE Colorado

Comments on the location information

  • 0.75 MILE NORTH OF LEYDEN GULCH ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Coal Primary
Uranium Primary

Materials information

Materials Type of material
Coffinite Ore
Uraninite Ore
Uranophane Ore
Marcasite Gangue
Pyrite Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone > Claystone
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Laramie Formation
    Rock description Laramie Formation
  • Host or associated Host
    Rock type Sedimentary Rock > Coal

Nearby scientific data

(1) -105.23114, 39.84999
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Denver Basin, Front Range Uplift
Type of structure Local
Structure description Golden Fault

Ore body information

  • General form TABULAR

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1874
Discoverer E.L. Berthoud
Year of first production 1950
Year of last production 1956

Mining district

District name Foothill District

Land status

Ownership category Private

Comments on the workings information

  • SEVERAL OPEN CUTS AND SHORT ADITS; MAIN 330-FT CROSSCUT ADIT; 184-FT VERTICAL SHAFT

Comments on development

  • URANIUM DISCOVERED IN 1874 BUT NOT PRODUCED UNTIL 1950. COAL PRODUCED IN LATE 1800S. TOTAL PRODUCTION THRU 1956 WAS 645.37 ST ORE AT 0.35% U308 YIELDING 4533 LB U308

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit URANIUM OCCURS IN FRACTURES IN BRECCIATED AND SILICIFIED COAL, IN ASSOCIATED CARBONACEOUS CLAY. STONE, AND IN OVERLYING SILICIFIED SANDSTONE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1983 Banke, Carl M. Colorado Geological Survey
Updater 01-MAY-1993 Spanski, Gregory T. 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.