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  3. Mineral Resource Data System (MRDS)

Duncan Mine

Past Producer in Brewster county in Texas, United States with commodity Mercury
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10040139
MRDS ID M054809
MAS/MILS ID 480430020
Record type Site
Current site name Duncan Mine
Alternate or previous names Duncan Group, Section 58, Hoover, Hoover Prospect, Pilkington, Pilkington Prospect
Related records 10154261

Geographic coordinates

Point of reference Approximate
Geographic coordinates: -103.70139, 29.30956 (WGS84)
Elevation 991
Location accuracy 1000(meters)
Relative position 5 MI W OF TERLINGUA. East of Croesus Canyon.

Site location context

Political divisions (FIPS codes)

Brewster(county)

Texas(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Amarilla Mountain(quadrangle 1:24,000 scale)

Chisos Mountains(quadrangle 1:100,000 scale)

Emory Peak(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Black Hills-Fresno(hydrologic unit)

Rio Grande-Amistad(hydrologic accounting unit)

Rio Grande-Amistad(hydrologic subregion)

Rio Grande(hydrologic region)

Geographic areas

Country State County
United States Texas Brewster

Comments on the location information

  • IN SEC 58, BLK G-12. CONSISTS OF 8 PATENTED CLAIMS, INCLUDING THE PILKINGTON AND HOOVER.
  • location 29.3106, -103.7078 WGS84 as given in deleted MAS record 0480430020 was poor. It plotted west of Croesus Canyon. The mine is to the east of the Canyon.

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Santa Elena Limestone
    Rock description Santa Elena Limestone
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

Approximate (1) -103.70139, 29.30956
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Fractures

Economic information about the deposit and operations

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

Mining district

District name Terlingua

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Frank Duncan
    First year 1943

Workings at the site

  • Type of workings Surface/Underground
    Length 45.72M
    Overall length 274.32M
  • Type of workings Surface/Underground
    Name of workings 150 ft of tunnels, 900 ft. of trenches, shallow shafts

Comments on the workings information

  • 150 FT OF TUNNELS, 900 FT OF TRENCHES, SEVERAL SHAFTS LESS THAN 20 FT DEEP.

Comments on development

  • ECON.COM: A FEW TONS OF ORE WERE TREATED IN A 6-PIPE RETORT.

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 1976-09-01 Peterson, Jocelyn A. U.S. Geological Survey
Updater 1992-09-01 Long, Keith R. U.S. Geological Survey
Editor 2012-10-30 Wilson, Anna B U.S. Geological Survey merged and deleted duplicate record 10154261
Reporter 1983-11-18 Garner U.S. Bureau of Mines MAS 0480430020

Beyond USGS

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

Maps centered on this site