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Poorman Shaft

Past Producer in Custer county in Colorado, United States with commodities Silver, Lead, Zinc
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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. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10012303
MRDS ID D007857
Record type Site
Current site name Poorman Shaft

Geographic coordinates

Point of reference Pit
Geographic coordinates: -105.32807, 38.12279 (WGS84)
Elevation 2789
Location accuracy 10(meters)
Relative position 1.85 MILES N 12 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 21 NW OF SW OF NE Colorado

Comments on the location information

  • 0.4 MILE SE OF QUERIDA ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Silver Primary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Quartz Gangue
Clay Gangue

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) > Felsic Volcanic Rock > Trachyte
    Rock unit name Game Ridge Trachyte;Rosita Andesite; Tuff Underlying Trachyte
    Rock description Game Ridge Trachyte;Rosita Andesite; Tuff Underlying Trachyte
    Stratigraphic age (youngest) Miocene

Nearby scientific data

Pit (1) -105.32807, 38.12279
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Rosita Volcanic Center, Wet Mtns
Type of structure Local
Structure description California Fault

Ore body information

  • Strike N 40 W
    Dip 70-80 DEG SW

Controls for ore emplacement

  • Fault; Contact Between Trachyte And Gneiss

Comments on the geologic information

  • TRACHYTE FLOWS AROUND MINE; GNEISS AT SURFACE

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

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Length 34.14M
    Overall depth 59.44M
    Overall length 34.14M
    Overall width 1.52M

Comments on the workings information

  • TWO SHAFTS, DRIFTS; OLD SHAFT 120 FT; NEW SHAFT 195 FT; ONE DRIFT REPORTED 112 FT;

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

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

General comments

Subject category Comment text
Deposit TRACHYTE ON HANGING WALL OF FAULT; GNEISS ON FOOTWALL; ROSITA ANDESITE TUFF UNDERLYING TRACHYTE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1981 Collins, Donna B. 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.