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

Keepsake Prospect

Prospect in Custer county in Colorado, United States with commodity Silver
Map
XML
JSON
KML
B
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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10012194
MRDS ID D007666
Record type Site
Current site name Keepsake Prospect
Alternate or previous names Concord Hill

Geographic coordinates

Point of reference Pit
Geographic coordinates: -105.3564, 38.11084 (WGS84)
Elevation 2789
Location accuracy 50(meters)
Relative position 1.35 MILES N56W FROM ROSITA, CO.

Site location context

Political divisions (FIPS codes)

Custer(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rosita(quadrangle 1:24,000 scale)

Canon City(quadrangle 1:100,000 scale)

Pueblo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Arkansas Headwaters(hydrologic unit)

Upper Arkansas(hydrologic accounting unit)

Upper Arkansas(hydrologic subregion)

Arkansas-White-Red(hydrologic region)

Geographic areas

Country State County
United States Colorado Custer

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 022S 071W 30 SE OF NE OF NE Colorado

Comments on the location information

  • NORTH SIDE OF CONCORD HILL, IN THE NE/4 SEC. 30, T 22 S, R 71 W; INFO FROM LAND.ST :(1976);

Commodities

Commodity Importance
Silver Primary

Alteration

  • (Local) Strong Argillization

Mineral occurrence model information

Model code 82
USGS model code 22
Deposit model name Epithermal veins

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Rosita Andesite;Game Ridge Trachyte
    Rock description Rosita Andesite;Game Ridge Trachyte
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

Pit (1) -105.3564, 38.11084
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Rosita Volcanic Center, Wet Mtns
Type of structure Local
Structure description Small Faults, Trachyte Dikes

Controls for ore emplacement

  • Mineralized Fissures

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1882

Mining district

District name Rosita Hills District

Land status

Ownership category Federal

Comments on the reserve resource information

  • A 1981 report suggested that low-grade, bulk-tonnage silver deposits may occur in this area. (Sunshine files)

Reference information

Bibliographic references

  • Deposit

    CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.

  • Deposit

    EMMONS, S.F., 1896, THE MINES OF CUSTER COUNTY, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 405-472.

  • Deposit

    SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAPS I-1081.

  • Deposit

    SIEMS, P.L., 1968, VOLCANIC GEOLOGY OF THE ROSITA HILLS AND SILVER CLIFF DISTRICT, CUSTER COUNTY, COLORADO: COLORADO SCHOOL MINES, D. SC. THESIS, T1042, 222 P.

  • Reserve-Resource

    Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

General comments

Subject category Comment text
Deposit Discovery Year: 1870-1895

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1981 Collins, Donna B. Colorado Geological Survey
Updater 05-APR-2006 Beach, Richard A. 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.