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  3. Mineral Resource Data System (MRDS)

Enterprise Mine

Past Producer in Boulder county in Colorado, United States with commodities Gold, Silver
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10263246
MRDS ID DC03395
MAS/MILS ID 0080130021
Record type Site
Current site name Enterprise Mine
Alternate or previous names Enterprise Vein
Related records 10017386

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -105.57531, 39.94471 (WGS84)
Elevation 2682
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Boulder(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nederland(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

St. Vrain(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Arapaho and Roosevelt 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 Boulder

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 001 S 073 W 21 N2SESE Colorado

Commodities

Commodity Importance
Gold Tertiary
Silver Tertiary

Materials information

Materials Type of material
Sylvanite Ore
Telluride Ore
Quartz Gangue
Barite Unknown
Molybdenite Unknown
Pyrite Unknown

Nearby scientific data

Main Entrance (1) -105.57531, 39.94471
ListMap

Economic information

Ore body information

  • Area 1HA
    Field Value
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 OTHER
    Type of Orebody #2 FISSURE VEIN
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control FRACTURING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 SERICITIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Total Surface Area (HA) 1
    Date of Last Modification 790426

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Eldora

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner L. Conklin And W Mcdermott
    Home office Colorado
    Year 1974
  • Type Owner
    Owner W. T. Harpel
    Home office Colorado
    Year 1974

Production statistics

  • Year 1897
    Period 1896-1897
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Gold Gold 17g/mt

Workings at the site

  • Type of workings Underground
    Length 400M
    Overall depth 130M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OTHER OPEN STOPE METHODS
    Swell Factor .33
    Percent Waste Rock 12.9
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Slope of Inclines 90
    1st Condition of Workings UNKNOWN
    Capacity 0
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1917

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Updater 29-MAY-0007 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.