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Dunkin

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

Geologic information

Identification information

Deposit ID 10167126
MRDS ID DC03794
MAS/MILS ID 0081170008
Record type Site
Current site name Dunkin
Related records 10108255

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.02754, 39.47027 (WGS84)
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Summit(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Breckenridge(quadrangle 1:24,000 scale)

Leadville(quadrangle 1:100,000 scale)

Leadville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Blue(hydrologic unit)

Colorado Headwaters(hydrologic accounting unit)

Colorado Headwaters(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

White River 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 Summit

Commodities

Commodity Importance
Gold Tertiary
Lead Tertiary
Silver Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Gold Unknown

Nearby scientific data

Main Entrance (1) -106.02754, 39.47027
ListMap

Economic information

Ore body information

  • Area 1HA
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 IRREGULAR
    Type of Orebody #2 SHEAR ZONE
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin CONT METASOMATIC
    Primary Ore Control FRACTURING
    Secondary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 PROPYLITIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Total Surface Area (HA) 1
    Date of Last Modification 780213

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1895

Mining district

District name Breckenridge

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Federal Lease
Type of mineral rights Private Lease

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Anita Broadhurst
    Home office Colorado
    Year 1974
  • Type Operator
    Owner John T. O'Doud
    Home office Colorado
    Year 1974

Production statistics

  • Year 1911
    Period 1911?
    Material ore
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Lead Lead 40%null%
    Trace Gold Gold 21g/mt
    Trace Silver Silver 514g/mt

Workings at the site

  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method GROUND SLUICING
    Swell Factor .1
    Avg. Overburden Thickness 1
    Primary Material Cover SAND, SILT
    Percentage 100
    Hardness of Ore SAND, GRAVEL
    Avg. Bench Height (meters) 2
    Max. Pit Slope (degrees) 40
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 1
    Units of Production $/MT ORE
    Year of Information 1974
  • Type of workings Underground
    Length 1890M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method TIMBERED STOPES
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING WHEN DRY
    Mine Support Chars. CHEMICAL COATING
    Avg. Length of Adits (m) 1290

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAY-1985 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Updater 11-AUG-0007 Melton, Greg U.S. Geological Survey

Beyond USGS

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

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.