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Cold Spring and Red Cloud

Past Producer in Boulder county in Colorado, United States with commodities Gold, Silver
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10263232
MRDS ID DC05029
MAS/MILS ID 80130192
Record type Site
Current site name Cold Spring and Red Cloud
Alternate or previous names Cold Spring Mine, Cold Springs Mine
Related records 10018186

Comments on the site identification

  • This record was confused with Cold Spring tungsten mine in Boulder County tungsten district, north of Barker Reservoir, and about a mile NE of Nederland. A.B. Wilson has attempted to remove the information relating to the tungsten from this record.

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -105.40611, 40.06595 (WGS84)
Elevation 2537
Location accuracy 10(meters)
Relative position Mine labeled on topo is "Cold Spring Mine".

Site location context

Political divisions (FIPS codes)

Boulder(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Gold Hill(quadrangle 1:24,000 scale)

Estes Park(quadrangle 1:100,000 scale)

Greeley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

St. Vrain(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Boulder

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 01N 072W 12 C of NW4 Colorado

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Telluride Ore
Petzite Ore
Sylvanite Ore
Pyrite Ore
Galena Ore

Comments on the analytical data

  • 1879-1880, contained 4 to 58.8 oz Au and 10 to 244 oz Ag per ton. Small lots contained 124 to 490.5 oz Au and 386 to 1,800 oz Ag per ton. (PP-223, p. 254).

Mineral occurrence model information

Model code 84
USGS model code 22b
Deposit model name Alkaline Au-Te (Au-Ag-Te veins)
Mark3 model number 80

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Boulder Creek Granite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Monzonite
    Rock type qualifier biotite monzonite porphyry dike
    Rock unit name biotite monzonite porphyry dike

Nearby scientific data

Main Entrance (1) -105.40611, 40.06595
ListMap

Economic information

Comments on the ore body information

  • GANGUE IS HORN QUARTZ AND ALTERED WALL ROCKS. (PP-223, p. 254)

Comments on the geologic information

  • Cold Spring and Red Cloud veins, nearly parallel, 35 to 50 ft. apart near surface, separated by porphyry dike. Veins strike N40-45E, dip 78NW to vertical, are 2 to 12 ft wide. Veins converge downwards and join at a depth of 470 ft. (PP-223, p. 254)

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1872

Mining district

District name Gold Hill

Land status

Ownership category Private

Production statistics

  • Year 1880
    Period 1879-1880
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 343g/mt
    Major Gold Gold 171g/mt

Comments on the production information

  • PRODUCED SEVERAL HUNDRED THOUSAND DOLLARS. $100,000 IN 1872. (PP-223, p. 254)

Reference information

Bibliographic references

  • Deposit

    MINE MAP REPO # 401209

  • Deposit

    DMEA DOCK[et] # 2685

  • Deposit

    Lovering, T.s., and Goddard, E.N., 1950, Geology and ore deposits of the Front Range, Colorado: USGS Prof. Paper 223, 319 p.

Reporter information

Type Date Name Affiliation Comment
Reporter 1983-11-17 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Editor 2007-05-18 Melton, Greg U.S. Geological Survey
Editor 2013-12-12 Wilson, Anna B U.S. Geological Survey Somehow this record became entangled with now deleted D003220, which is a W deposit with the same name but farther south in the W district, not Gold Hill. Attempted separating the records.
Reporter 1973-03-01 Conservation Division Files U.S. Geological Survey DC05029 = 10018186

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.