The Expectation Mine is a copper mine located in Dolores county, Colorado at an elevation of 10,561 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 10,561 Feet (3,219 Meters)
Commodity: Copper
Lat, Long: 37.69194, -108.05694
Map: View on Google Maps
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Expectation Mine MRDS details
Site Name
Primary: Expectation Mine
Secondary: Engel Mine
Secondary: Unpatented Claims: Expectation
Secondary: Thirteenth
Secondary: Johnny Miller
Secondary: Alf
Secondary: Edna
Secondary: Rosemary
Secondary: Mae
Secondary: Mae No. 1
Secondary: Hornet
Secondary: Babe
Secondary: V. J. K.
Secondary: Victor
Secondary: Aviator
Secondary: C. M. E.
Commodity
Primary: Copper
Secondary: Gold
Location
State: Colorado
County: Dolores
District: Pioneer (Rico) District
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: San Juan N. F.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Engel, Charles
Home Office: Rico, Co.
Years: 1956 -
Owner Name: E. J. Lane
Home Office: Wilcox, Az.
Years: 1956 -
Production
Year: 1918
Material type: ORE CU AU ACC
Description: Ap_Grade: ^0.16 Oz/Ton Au, 1.9% Cu
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1918
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: Canyon Lands
Mineral Deposit Model
Model Name: Polymetallic replacement
Orebody
Not available
Structure
Type: R
Description: San Juan Uplift, Paradox Basin
Type: L
Description: Rico Dome
Alterations
Not available
Rocks
Name: Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Pennsylvanian
Name: Monzonite
Role: Associated
Age Type: Host Rock Unit
Age Young: Pennsylvanian
Name: Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Tetrahedrite
Comments
Comment (Location): (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
Comment (Production): PARTIAL(?) PRODUCTION RECORD. NO PRODUCTION REPORTED IN 1919 AND 1921.
Comment (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.
Comment (Workings): MAIN TUNNEL DRIVEN GENERALLY WEST FOR 1500 FT, WITH 20-FT RAISE AND 18- AND 30-FT WINZES
References
Reference (Deposit): RANSOME, F.L., 1901, THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2.
Reference (Deposit): MCKNIGHT, E.T., 1974, GEOLOGY AND ORE DEPOSITS OF THE RICO DISTRICT, COLORADO: USGS PROF. PAPER 723.
Reference (Deposit): PRATT, W.P., AND OTHERS, 1969, GEOLOGIC MAP OF THE RICO QUADRANGLE, DOLORES AND MONTEZUMA COUNTIES, COLORADO: USGS MAP GQ-797.
Reference (Deposit): COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.
Reference (Production): COLORADO DIV. MINES ANNUAL OPERATOR REPT.
Colorado Mining Photos
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