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  3. Mineral Resource Data System (MRDS)

Bonanza Mine

Past Producer in Custer county in Colorado, United States with commodity 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  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. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10012173
MRDS ID D007640
Record type Site
Current site name Bonanza Mine

Geographic coordinates

Geographic coordinates: -105.33585, 38.08807 (WGS84)
Elevation 2713
Relative position 0.7 MILES S07E 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 33 NE OF SW SW Colorado

Comments on the location information

  • SOUTH SLOPE OF WAKEFIELD HILL ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Silver Primary

Materials information

Materials Type of material
Barite Gangue
Quartz Gangue

Alteration

  • (Local) None Reported; Possibly Mild Argillization

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyodacite
    Rock unit name Rhyolite Of Rosita Volcano;Rhyodacite Of Bald Mountain
    Rock description Rhyolite Of Rosita Volcano;Rhyodacite Of Bald Mountain
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -105.33585, 38.08807
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Rosita Volcanic Center, Wet Mtns
Type of structure Local
Structure description Volcanic Vent; Vein At Contact Of Two Units

Ore body information

  • Strike N5W
    Dip 80 TO 85

Controls for ore emplacement

  • Mineralized Fault

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1882

Mining district

District name Rosita

Land status

Ownership category Federal

Workings at the site

  • Type of workings Underground
    Overall depth 45.72M

Comments on the workings information

  • TWO SHAFTS ON VEIN, SHORT DRIFT ON DEEPER SHAFT; SECOND SHAFT TO NORTH AND ABOUT 100 FEET DEEP

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.

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

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.