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Alderman Deposit

Past Producer in Chaffee county in Colorado, United States with commodities Fluorine-Fluorite, Manganese
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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. Ownership information
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. Reporter information

Geologic information

Identification information

Deposit ID 10013699
MRDS ID D010130
Record type Site
Current site name Alderman Deposit

Geographic coordinates

Geographic coordinates: -106.06504, 38.62528 (WGS84)
Elevation 2256
Location accuracy 10(meters)
Relative position 8.3 MILES S 03 E OF NATHROP

Site location context

Political divisions (FIPS codes)

Chaffee(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nathrop(quadrangle 1:24,000 scale)

Gunnison(quadrangle 1:100,000 scale)

Montrose(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 Chaffee

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 051N 008E 34 SE OF NW OF SE Colorado

Comments on the location information

  • SE OF HECLA JUNCTION, EAST OF US HWY 285, WEST OF ARKANSAS RIVER; SE/4 SEC. 34, T 51 N, R 8 E. INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Fluorine-Fluorite Critical Primary
Manganese Critical Tertiary

Materials information

Materials Type of material
Fluorite Ore
Barite Gangue
Calcite Gangue
Goethite Gangue
Hematite Gangue
Kaolinite Gangue
Manganite Gangue
Montmorillonite Gangue
Opal Gangue
Psilomelane Gangue
Pyrite Gangue
Pyrolusite Gangue
Quartz Gangue

Alteration

  • (Local) Silicification, Fluoritization

Analytical data

Result ESTIMATED AVERAGE 30% CAF2

Mineral occurrence model information

Model code 174
USGS model code 26b
Deposit model name Fluorspar deposits (fluorite veins)

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Gneissic Quartz Monzonite;Ash-Flow Tuff
    Rock description Gneissic Quartz Monzonite;Ash-Flow Tuff
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Banded Gneiss
    Rock description Banded Gneiss
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -106.06504, 38.62528
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Southern Mosquito Range, Arkansas Valley Graben
Type of structure Local
Structure description Folds, Faults; N-Trending Fault Bounding Arkansas Valley

Ore body information

  • Thickness 3.05M
    Length 15.24M

Controls for ore emplacement

  • Fault Breccia; Fault Zone Striking N 30-50 W, Dipping 65-85 Sw; Fractures

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1923
Year of first production 1927
Year of last production 1949

Mining district

District name Browns Canyon District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner John Alderman And Associates
    First year 1945
  • Type Owner
    Owner James Bopp
    First year 1945

Comments on the production information

  • SMALL QUANTITY OF METALLURGICAL-GRADE FLUORSPAR MINED AND SHIPPED IN 1944-1945

Workings at the site

  • Type of workings Unknown
    Length 91.44M

Comments on the workings information

  • CROSSCUT ADIT, DRIFT, PITS.

Reference information

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1983 Collins, Donna B. Colorado Geological Survey
Updater 10-MAR-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.