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  3. Mineral Resource Data System (MRDS)

Unnamed Placer

Past Producer in Jefferson county in Colorado, United States with commodity Gold
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10013256
MRDS ID D009451
Record type Site
Current site name Unnamed Placer

Geographic coordinates

Geographic coordinates: -105.00056, 39.06667 (WGS84)
Elevation 1692
Location accuracy 250(meters)
Relative position 7.7 MILES N 45 W FROM DOWNTOWN DENVER

Site location context

Political divisions (FIPS codes)

El Paso(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Deception(quadrangle 1:24,000 scale)

Bailey(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fountain(hydrologic unit)

Upper Arkansas(hydrologic accounting unit)

Upper Arkansas(hydrologic subregion)

Arkansas-White-Red(hydrologic region)

Federal lands

Pike and San Isabel 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 Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 003S 069W 02 SW OF NW OF SW Colorado

Comments on the location information

  • ABOVE AND NORTH OF RALSTON CREEK POSSIBLY AROUND CARR ST. AND 66TH AVE.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
    Rock unit name Slocum Alluvium ;Verdos Alluvium
    Rock description Slocum Alluvium ;Verdos Alluvium
    Stratigraphic age (youngest) Pleistocene

Nearby scientific data

(1) -105.00056, 39.06667
ListMap

Economic information

Geologic structures

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

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1935
Year of last production 1935

Mining district

District name Denver Area

Comments on the production information

  • PARKER STATES THAT RALPH MINGES (ORIG. REF. TO PERS. COMM.) ESTIMATED THE GRAVEL HAD VALUE OF 40?/YD IN COARSE GOLD

Reference information

Bibliographic references

  • Deposit

    LINDVALL, R.M., 1979, GEOLOGIC MAP OF THE ARVADA QUADRANGLE, ADAMS, DENVER, AND JEFFERSON COUNTIES, COLORADO: USGS MAP GQ-1453

  • Deposit

    PARKER, B.H., JR., 1974, GOLD PLACERS OF COLORADO: COLORADO SCHOOL OF MINES QUART., V. 69, NO. 3, P. 63-126

General comments

Subject category Comment text
Deposit PARKER STATES THAT ALTHOUGH THE SURFICIAL UNIT CORRELATES WITH SLOCUM LEVEL, THE HIGH LEVEL OF THE GRAVELS MAY BE REMNANTS OF VERDOS ALLUVIUM. LINVALL'S MAP SHOWS COLLUVIUM OVERLYING DENVER FM (PALEOCENE) IN THIS AREA (PRESUMABLY T3S, R70W) BUT SMALL REMNANTS OF TERRACE/PEDIMENT GRAVEL MAY BE PRESENT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-82 Schwochow, Stephen D. 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.