Belfast & Shamrock

Past Producer in Gilpin county in Colorado, United States with commodities Cadmium, Copper, Gold, Lead, Zinc
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. Ownership information
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10215626
MAS/MILS ID 0080470033
Record type Site
Current site name Belfast & Shamrock
Alternate or previous names Belfast

Geographic coordinates

Geographic coordinates: -105.54999, 39.84329 (WGS84)

Site location context

Political divisions (FIPS codes)

Gilpin(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Central City(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Clear(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 Gilpin

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 002 S 073 W 27 SW Colorado

Commodities

Commodity Importance
Cadmium Tertiary
Copper Tertiary
Gold Tertiary
Lead Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Argentite Unknown
Chalcocite Unknown
Chalcopyrite Unknown
Galena Unknown
Orthoclase Unknown
Quartz Unknown
Sphalerite Unknown

Nearby scientific data

(1) -105.54999, 39.84329

Economic information

Ore body information

  • Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 UNKNOWN
    Type of Orebody #2 FISSURE VEIN
    Type of Orebody #3 BRECCIA FILL
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin CONT METASOMATIC
    Primary Ore Control FRACTURING
    Secondary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 PROPYLITIC
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Type of Wallrock Alter. #3 SILICIFICATION
    Date of Last Modification 780213

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1863

Mining district

District name North Gilpin

Ownership information

  • Type Owner
    Owner John E Morris
    Home office Colorado
    Year 1974

Workings at the site

  • Type of workings Underground
    Length 13400M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OVERHAND SQUARE-SET 10-46A
    Swell Factor .33
    Percent Waste Rock 69.1
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics NO PLANES OF WEAKNESS
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Avg. Length of Adits (m) 6717
    1st Condition of Workings OPEN
    2nd Condition of Workings OPEN
    3rd Condition of Workings OPEN
    Capacity 1.2
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE

Reference information

Bibliographic references

  • Deposit

    REF:USGS 7.5 QUAD. MAP CENTRAL CITY ; MAS FILE

Reporter information

Type Date Name Affiliation Comment
Reporter 27-JUN-1985 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines

Beyond USGS

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

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.