Shamrock and Atlantic Cable

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

Geologic information

Identification information

Deposit ID 10214725
MRDS ID D010788
MAS/MILS ID 0080330179
Record type Site
Current site name Shamrock and Atlantic Cable
Alternate or previous names Rico Argentine, San Juan National Forest
Related records 10014141

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -108.03205, 37.69281 (WGS84)
Elevation 2676
Location accuracy 1000(meters)

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

Commodities

Commodity Importance
Copper Tertiary
Gold Tertiary
Lead Tertiary
Silver Primary
Zinc Critical Tertiary

Nearby scientific data

Main Entrance (1) Rico and Hermosa Fms

Economic information

Ore body information

  • Field Value
    Type of Orebody #1 REPLACEMENT
    Type of Orebody #2 SHEAR ZONE
    Type of Orebody #3 FISSURE VEIN
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Date of Last Modification 920519

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Pioneer/Rico

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category Mixed

Ownership information

  • Type Owner
    Owner Rico Development Corp.
    ID 500416
    Interest 100
    Home office Colorado
    Year 1989

Reference information

Bibliographic references

  • Deposit

    OWN/OP: RICO ARGENTINE

  • Deposit

    UNDERGROUND WORKING FOR RICO ARGENTINE MINE

  • Deposit

    REF:MINE MAP REPOSITORY

  • Deposit

    US BUREAU OF MINES OPEN FILE REPORT MLA 2-92

General comments

Subject category Comment text
Deposit THE SHAMROCK IS ON WEST SIDE OF DOLORES RIVER,IS CAVED IN 1989 AND ONCE CONNECTED TO THE ATLANTIC CABLE ON EAST SIDE OF RIVER WHICH WAS FLOODED BUT HEAD FRAME WAS STANDING IN 1989, SAMPLE #455-458. THE 7,500CU FT (500 TONS) OF DUMP MATERIAL AT THE SHAMROCK CONTAINED 0.03 OZ/TON CADMIUM, 2.52% LEAD, AND 3.66% ZINC. THE ATLANTIC CABLE DUMP CONTAINED ABOUT 108,750 CU FT OF MATERIAL.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-MAY-1992 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.

Current status (per MSHA)

StatusAbandoned since 07/08/1985
MSHA mine ID0500416
Mine name (MSHA)Rico Complex
Current operatorAnaconda Minerals Company
Current controller (parent)Atlantic Richfield Company
Mine typeUnderground (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

Authoritative Colorado resources

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