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Expectation Mine

Past Producer in Dolores county in Colorado, United States with commodities Copper, Gold
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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. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Production statistics
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10014123
MRDS ID D010766
Record type Site
Current site name Expectation Mine
Alternate or previous names Engel Mine, Unpatented Claims: Expectation, Thirteenth, Johnny Miller, Alf, Edna, Rosemary, Mae, Mae No. 1, Hornet, Babe, V. J. K., Victor, Aviator, C. M. E.
Related records 10190477

Geographic coordinates

Geographic coordinates: -108.05759, 37.69195 (WGS84)
Elevation 3219
Relative position 1.5 MILES S 88 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

Rico(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 34 N2 Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). SW OF SULPHUR CREEK ON EAST SLOPE OF EXPECTATION MTN (UNSURVEYED SECTION). ELEV AND LAT-LONG GIVEN ARE FROM RICO TOPO MAP (1960 BASE). ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Copper Primary
Gold Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Tetrahedrite Ore

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Paleocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Rock unit name Hornblende Latite Porphyry;Augite Monzonite
    Rock description Hornblende Latite Porphyry;Augite Monzonite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Hermosa Formation
    Rock description Hermosa Formation

Nearby scientific data

(1) -108.05759, 37.69195
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Uplift, Paradox Basin
Type of structure Local
Structure description Rico Dome

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1918

Mining district

District name Pioneer (Rico) District

Land status

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

Ownership information

  • Type Operator
    Owner E. J. Lane
    Home office Wilcox, Az.
    First year 1956
  • Type Owner
    Owner Engel, Charles
    Home office Rico, Co.
    First year 1956

Production statistics

  • Year 1918
    Material ORE CU AU ACC
    Description Ap_Grade: ^0.16 Oz/Ton Au, 1.9% Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 2wt-pct
    Minor Ore Gold Gold 5g/mt

Comments on the production information

  • PARTIAL(?) PRODUCTION RECORD. NO PRODUCTION REPORTED IN 1919 AND 1921.

Comments on the workings information

  • MAIN TUNNEL DRIVEN GENERALLY WEST FOR 1500 FT, WITH 20-FT RAISE AND 18- AND 30-FT WINZES

Reference information

Bibliographic references

  • Deposit

    RANSOME, F.L., 1901, THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2.

  • Deposit

    MCKNIGHT, E.T., 1974, GEOLOGY AND ORE DEPOSITS OF THE RICO DISTRICT, COLORADO: USGS PROF. PAPER 723.

  • Deposit

    PRATT, W.P., AND OTHERS, 1969, GEOLOGIC MAP OF THE RICO QUADRANGLE, DOLORES AND MONTEZUMA COUNTIES, COLORADO: USGS MAP GQ-797.

  • Deposit

    COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.

  • Production

    COLORADO DIV. MINES ANNUAL OPERATOR REPT.

General comments

Subject category Comment text
Deposit NO DESCRIPTION AVAILABLE, BUT TUNNEL DRIVEN INTO UPPER HERMOSA FM AND/OR CUTLER FM SEDIMENTARY ROCKS, PROBABLY INTRUDED BY HORNBLENDE LATITE PORPHYRY SILLS. ORES COULD BE RELATED TO BLANKET REPLACEMENT IN LIMESTONE NEAR PORPHYRY SILL.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1983 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.