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Hopemore Mine

Past Producer in Lake county in Colorado, United States with commodities Zinc, Gold, Silver, Lead, Copper, Iron
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Ownership information
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10288486
MAS/MILS ID 0080650088
Record type Site
Current site name Hopemore Mine
Alternate or previous names Comstock-Hopemore-Hunter (Robert Burns) group

Comments on the site names

  • Different from the Comstock mine about 1 mile to the south on Whites Hill.

Geographic coordinates

Point of reference Geographic coordinates: Elevation UTM Precision Relative position Point location
Town -106.24311, 39.23555 (WGS84) 3500 10
(click for info)
Town -106.23839, 39.24666 (WGS84) 3500 10

Site location context

Political divisions (FIPS codes)

Lake(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Sherman(quadrangle 1:24,000 scale)

Leadville(quadrangle 1:100,000 scale)

Leadville(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 Lake

Comments on the location information

  • Hopemore shaft is 800 feet NW of Ibex #4 shaft, about 2-1/2 miles east of Leadville, in SE/4 SE/4 sec 20 T 9 S, R 79 W.

Commodities

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

Comments on the commodity information

  • Iron occurs as masssive replacement deposits of magnetite skarn in Leadville Limestone.

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Magnetite Ore
Pyrite Ore
Specularite Ore
Sphalerite Ore
Quartz Gangue
Serpentine Gangue

Mineral occurrence model information

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

Nearby scientific data

Town (1) -106.24311, 39.23555
ListMap
Town (2) -106.23839, 39.24666
ListMap

Economic information

Comments on the geologic information

  • Ibex #4 fault vein (one of the longest and best mineralized in the district) passes through the mine area. Massive replacement deposits of magnetite-specularite are also present.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1997
Plant type Beneficiation (Mill)
Milling method Flotation

Mining district

District name Leadville District

Mineral rights holdings

Type of mineral rights Unknown
Type of mineral rights Located Claim
Type of mineral rights Patented

Ownership information

  • Type Owner-Operator
    Owner Leadville Mining And Milling Co.
    Interest 100
    Home office New York
    Year 1997

Reserves and resources

  • Type In-situ
    Estimate year 1997
    Demonstrated 109769mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver 547.57 g/mt Silver Major 1997
    Gold 11.14 g/mt Gold Major 1997

Comments on the reserve resource information

  • About 121,000 tons of proven and probable reserves, grading 0.18 oz/ton gold, 8.63 oz/ton silver, 3.98% lead, 12.2% zinc, and 0.35% copper are reported. (Sunshine files, 1992)
  • A 1990 report details many exploration targets for orebodies. (Sunshine files)

Comments on other economic factors

  • BALL MILL, DUAL GRAVITY & FLOTATION CIRCUITS:

Reference information

Bibliographic references

  • Deposit

    SKILLINGS MINING REVIEW, APRIL 5, 1997, P. 22; JULY 26, 1997, P. 10.

  • Deposit

    RANDOL MINING DIRECTORY, 1996/97, U.S. MINES & MINING COMPANIES, P. 175

  • Deposit

    THE MINING RECORD, VOL., 108, #9, FEB 26, 1997, P. 3.

  • Reserve-Resource

    RANDOL MINING DIRECTORY, 1996/97, U.S. MINES & MINING COMPANIES, P. 175

  • Deposit

    Emmons, S. F., Irving, J. D., and Loughlin, G. F., 1927, Geology and ore deposits of the Leadville mining district, Colorado: U.S. Geological Survey Professional Paper 148.

  • Deposit

    Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

  • Deposit

    MINE MAP REPO #400187

General comments

Subject category Comment text
Deposit THE BUREAU OF MINES DISCLOSED A MAGNETIC ANOMALY HERE IN 194

Reporter information

Type Date Name Affiliation Comment
Reporter 25-APR-97 Buckingham, David A. U.S. Bureau of Mines
Updater 15-FEB-06 Beach, Richard A. Colorado Geological Survey
Updater 21-AUG-07 Melton, Greg U.S. 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.