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  3. Mineral Resource Data System (MRDS)

Newlin Gulch Placer

Occurrence in Douglas 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10012328
MRDS ID D007892
Record type Site
Current site name Newlin Gulch Placer
Related records 10239408

Geographic coordinates

Geographic coordinates: -104.83474, 39.48528 (WGS84)
Elevation 1859
Location accuracy 500(meters)
Relative position 4.5 MILES S 55 W OF PARKER

Site location context

Political divisions (FIPS codes)

Douglas(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Castle Rock North(quadrangle 1:24,000 scale)

Castle Rock(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle South Platte-Cherry Creek(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Douglas

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 006S 067W 36 E2 Colorado

Comments on the location information

  • NEWLIN GULCH STREAM BED. LAT-LONG IS C E/2 ; INFO FROM LAND.ST :(1974)

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Alteration

  • (Local) Denver Basin

Analytical data

Result 0.2 TO 13.5 CENTS/YD
Result GOLD SIZE 8.6 TO 44 COLORS/MG

Host and associated rocks

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

Nearby scientific data

(1) -104.83474, 39.48528
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Denver Basin
Type of structure Local
Structure description Denver Basin

Ore body information

  • Depth to bottom 7.01M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1895

Mining district

District name Castle Rock Area

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Earl Mclain
    First year 1939

Comments on the workings information

  • PROFITABLE OPERATIONS PROHIBITED BY EXTREME FINENESS OF AU SPOTTY OCCURRENCE, LACK OF WATER, OLDER WORKINGS WERE DRIFTS DRIVEN INTO BENCH GRAVELS.

Comments on development

  • LAST REPORTED ACTIVITY WAS SIX TEST HOLES ACROSS GULCH, PROBABLY 1939.

Reference information

Bibliographic references

  • Deposit

    PARKER, B.H., JR., 1974, GOLD PLACERS OF COLORADO: COLORADO SCHOOL MINES QUART, V. 69, NO. 3, P. 45-57.

  • Deposit

    TRIMBLE, D.E., AND FITCH, M.N., 1979, GEOLOGIC MAP OF THE GREATER DENVER AREA, FRONT RANGE URBAN CORRIDOR: USGS MAP 1-856-H.

General comments

Subject category Comment text
Deposit AU CONCENTRATIONS SMALL, LOCAL, AND CONFINED TO BENCH GRAVELS, PROBABLE SOURCE OF AU IS CASTLE ROCK CONGLOMERATE (LOWER OLIGOCENE)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1981 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.