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America Mine

Past Producer in Dolores county in Colorado, United States with commodities Silver, Gold, Lead, Copper, 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. Mineral occurrence model information
  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. Ownership information
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10014228
MRDS ID D010904
Record type Site
Current site name America Mine
Alternate or previous names Patented Claims: America, MS 18486a, Columbia, MS 18486a, Nil Desperandum, MS 18486a

Geographic coordinates

Geographic coordinates: -108.10676, 37.76084 (WGS84)
Elevation 2743
Relative position 6.3 MILES N 42 W FROM RICO

Site location context

Political divisions (FIPS codes)

Dolores(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Dolores Peak(quadrangle 1:24,000 scale)

Dove Creek(quadrangle 1:100,000 scale)

Cortez(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Dolores(hydrologic unit)

Upper Colorado-Dolores(hydrologic accounting unit)

Upper Colorado-Dolores(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

San Juan National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Dolores

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 040N 011W 05 Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). CLAIMS LIE ON SOUTH SIDE OF WEST DOLORES RIVER IN UNNAMED GULCH 1 MILE BELOW DUNTON AND ABOUT 0.35 MILE SW OF SMUGGLER MINE. ELEV AND LAT-LONG GIVEN ARE FOR LOWER TUNNEL AS SHOWN ON 1937 SPECIAL EDITION TOPO MAP OF DUNTON MINING AREA. ; INFO FROM LAND.ST :1975

Commodities

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

Comments on the commodity information

  • COMMODITIES AND ORE MINERALS LISTED NOT DEFINITELY KNOWN BUT INFERRED ON BASIS OF PROBABLE SIMILARITY WITH EMMA AND SMUGGLER MINES.

Materials information

Materials Type of material
Argentite Ore
Chalcopyrite Ore
Galena Ore
Polybasite Ore
Pyrargyrite Ore
Sphalerite Ore
Quartz Gangue

Analytical data

Result OLD STOPES SAID TO CONTAIN 200 OZ/TON AG AND 1 OZ/TON AU

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Rock unit name Microgabbro
    Rock description Microgabbro
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Cutler Formation;Dolores Formation
    Rock description Cutler Formation;Dolores Formation

Nearby scientific data

(1) -108.10676, 37.76084
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Uplift, Paradox Basin
Type of structure Local
Structure description Rico Dome, Dunton Syncline, Unnamed Fault, Emma Fault

Ore body information

  • Thickness 0.46M

Controls for ore emplacement

  • Probable Fault Subparallel To But Outside Graben

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1910

Mining district

District name Lone Cone (Dunton) District

Land status

Ownership category National Forest
Area name San Juan N. F.

Ownership information

  • Type Operator
    Owner West Dolores Gold And Silver, Inc.
    Home office Rico, Co.
    First year 1977
  • Type Owner
    Owner Lucy, James, And Robert Fahrion
    Home office Rico, Co.
    First year 1977

Comments on the workings information

  • CDM REPORTS CIT WORKINGS AS FOUR ADITS (DRIVEN GENERALLY SE) CONNECTED BY RAISES

Reference information

Bibliographic references

  • Deposit

    BUSH, A.L., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE DOLORES PEAK QUADRANGLE, DOLORES AND SAN MIGUEL COUNTIES, COLORADO: USGS MAP GQ-536.

  • Deposit

    BASTIN, E.S., 1922, SILVER ENRICHMENT IN THE SAN JUAN MOUNTAINS, COLORADO: USGS BULL. 735-D, P. 116-129.

  • Deposit

    COLORADO DIV. MINES INF. REPTS.

  • Deposit

    BLM MINERAL SURVEY MS 18486A

General comments

Subject category Comment text
Deposit MINE DEVELOPED IN DOLORES FM RED BEDS ON PROBABLE VEIN THAT TRENDS NW-SE AND IS PARALLEL TO EMMA VEIN AND TO OTHER FISSURES THAT LIE TO SW BEYOND GRABEN.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1983 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.