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  3. Mineral Resource Data System (MRDS)

Eagle and Mary Alice Claims

Occurrence in Hinsdale county in Colorado, United States with commodity Uranium
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10014753
MRDS ID D011666
Record type Site
Current site name Eagle and Mary Alice Claims

Geographic coordinates

Geographic coordinates: -107.50592, 38.03306 (WGS84)
Elevation 3639
Relative position 10.2 MILES N 89 W FROM LAKE CITY

Site location context

Political divisions (FIPS codes)

Hinsdale(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Wetterhorn Peak(quadrangle 1:24,000 scale)

Montrose(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Gunnison(hydrologic unit)

Gunnison(hydrologic accounting unit)

Gunnison(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

Grand Mesa, Uncompahgre and Gunnison National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Hinsdale

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 044N 006W 27,34 Colorado

Comments on the location information

  • PROSPECTS LOCATED ON BOTH SIDES OF MARY ALICE CREEK. ELEV AND LAT-LONG GIVEN ARE FOR PROSPECT ON RHYOLITE PLUG NE OF CREEK (SAME AS THAT SAMPLED BY STEVEN AND OTHERS, 1977), APPROX C SEC. 27. ; INFO FROM LAND.ST :1977

Commodities

Commodity Importance
Uranium Primary

Materials information

Materials Type of material
Uranophane Ore

Analytical data

Result STEVEN AND OTHERS' (1977) PIT-FLOOR SPECIMEN CONTAINED GT 5% AL, 0.3% CA, 2% FE, 0.2% MG, 0.1% MN, 0.05% TI, 70 PPM CR, 30 PPM CU, 100 PPM PB, 70 PPM ZR, TRACE AU, 0.1 OZ/TON AG, 0.10% U308. BACKGROUND RADIATION 0.02 MR/HR, RANGE 0.02 TO 0.3 MR/HR.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Porphyrytic Andesite Of Pyroxene Andesite Member Of Silverton Volcanics;Oligo;Ash-Flow Member Of Crystal Lake Tuff;Intrusive Rocks--Rhyolite
    Rock description Porphyrytic Andesite Of Pyroxene Andesite Member Of Silverton Volcanics;Oligo;Ash-Flow Member Of Crystal Lake Tuff;Intrusive Rocks--Rhyolite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Rock unit name Tuffaceous Sandstone Of Henson Member Of Silverton Volcanics
    Rock description Tuffaceous Sandstone Of Henson Member Of Silverton Volcanics
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -107.50592, 38.03306
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field, San Juan Depression
Type of structure Local
Structure description San Juan-Uncompahgre Calderas, Lake City Caldera

Controls for ore emplacement

  • Permeability Of Flow Breccia

Comments on the geologic information

  • FISH CANYON TUFF

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Galena (Henson Creek) District

Land status

Ownership category National Forest

Reference information

Bibliographic references

  • Deposit

    STEVEN, T.A., AND OTHERS, 1977, MINERAL RESOURCES OF STUDY AREAS CONTIGUOUS TO THE UNCOMPAHGRE PRIMITIVE AREA, SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS BULL. 1391-E, P. 83-84, 110-111, PLS. 1, 3.

  • Deposit

    NELSON-MOORE, J.L, AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 179.

  • Deposit

    MALAN, R.C., AND RANSPOT, H.W., 1955, GEOLOGIC EVALUATION OF THE EAGLE AND MARY ALICE CLAIMS, LAKE CITY, HINSDALE COUNTY, COLORADO, FOR "FRINGE AREA" CONTRACT: AEC REPT. DEB-3-TM-6, 2 P.

  • Deposit

    LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.

  • Deposit

    LUEDKE, R.G., 1972, GEOLOGIC MAP OF THE WETTERHORN PEAK QUADRANGLE, COLORADO: USGS MAP GQ-1011.

  • Deposit

    FISCHER, R.P., AND OTHERS, 1968, MINERAL RESOURCES OF THE UNCOMPAHGRE PRIMITIVE AREA, COLORADO: USGS BULL. 1261-C, P. 30.

  • Deposit

    MALAN, R.C., 1955, AEC PRELIM. RECON. REPT. DEB-P-3-1711

General comments

Subject category Comment text
Deposit DEPOSIT LIES NEAR NW RIM OF UNCOMPAHGRE CALDERA IN INFILL SEQUENCE COMPOSED OF HENSON MEMBER SANDSTONES, FISH CANYON TUFF, AND PORPHYRITIC ANDESITE FLOWS. SEQUENCE IS INTRUDED BY MIOCENE RHYOLITE PLUGS AT WEST END OF CHAIN OF SIMILAR PLUGS EMPLACED AFTER LAKE CITY CALDERA COLLAPSE. MALAN (1955) NOTED RADIOACTIVITY ASSOCIATED WITH FLOW BRECCIA. FRACTURES TRENDING N 80 E, 85 NW, APPARENTLY HAD NO CONTROL ON MINERALIZATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1984 Schwochow, Stephen D. 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.