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Polonia Shaft

Past Producer in Custer county in Colorado, United States with commodities Silver, Lead, Copper, Zinc, Iron
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10012302
MRDS ID D007856
Record type Site
Current site name Polonia Shaft
Alternate or previous names Twenty-six-Polonia vein, Brittle Silver

Geographic coordinates

Point of reference Pit
Geographic coordinates: -105.3289, 38.1114 (WGS84)
Elevation 2804
Location accuracy 10(meters)
Relative position 1.1 MILES N 18 E 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 28 NE OF NE OF NW Colorado

Comments on the location information

  • SOUTH SIDE OF DUTCH FLAT, 1 MILE NNE OF ROSITA, IN THE NW/4 SEC 28, T 22 S, R 71 W. INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Silver Primary
Lead Secondary
Copper Secondary
Zinc Critical Secondary
Iron Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Argentite Ore
Chalcocite Ore
Stephanite Ore
Barite Gangue
Calcite Gangue

Alteration

  • (Local) carbonate, argillic

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Trachyte
    Rock unit name Game Ridge Trachyte;Rosita Andesite On Other Side Of Fault
    Rock description Game Ridge Trachyte;Rosita Andesite On Other Side Of Fault
    Stratigraphic age (youngest) Oligocene

Nearby scientific data

Pit (1) -105.3289, 38.1114
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Rosita Volcanic Center, Wet Mtns
Type of structure Local
Structure description On Twenty-Six Fault Which Strikes East-West

Controls for ore emplacement

  • pebble dike locally

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1895

Mining district

District name Rosita Hills District

Land status

Ownership category Private

Comments on the reserve resource information

  • A 1981 report suggested that silver deposits may occur along this vein. (Sunshine files)

Workings at the site

  • Type of workings Underground
    Overall depth 103.63M

Comments on the workings information

  • SHAFT

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 MAP I-1081.

  • Reserve-Resource

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

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-81 Collins, Donna B. Colorado Geological Survey
Updater 05-APR-06 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.