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Tecoma District Deposits

Past Producer in Elko county in Nevada, United States with commodities Lead, Zinc, Silver, Gold, Copper, Molybdenum
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10310535
Record type Site
Current site name Tecoma District Deposits
Alternate or previous names Jackson Mines, Bullock, Jackson Group, All-Star, Morning Star, Evening Star, North Star
Related records 10046058, 10104042

Comments on the site identification

  • The Nevada portion of the Tecoma district has the only production, however the remaining resource is in the Utah portion of the district. UTM location is to the most productive mined area of the Nevada Tecoma district.

Geographic coordinates

Geographic coordinates: -114.07143, 41.44019 (WGS84)
Elevation 1740
Relative position The prospect area is located about 11 miles north of Tecoma Siding on the SP Railroad

Site location context

Political divisions (FIPS codes)

Elko(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Jackson Spring(quadrangle 1:24,000 scale)

Wells(quadrangle 1:100,000 scale)

Wells(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Northern Great Salt Lake Desert(hydrologic unit)

Great Salt Lake(hydrologic accounting unit)

Great Salt Lake(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 041N 070E 18 Nevada

Comments on the location information

  • The mineralized area occurs on the west side of the southern end of a low ridge .

Commodities

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

Comments on the commodity information

  • Ore Materials: lead carbonates, galena, anglesite, cerussite, wulfenite
  • Gangue Materials: calcite, clay, barite, quartz, iron oxide

Materials information

Materials Type of material
Galena Ore
Anglesite Ore
Cerussite Ore
Wulfenite Ore
Clay Ore
Barite Ore
Quartz Ore
Calcite Gangue

Alteration

  • (Local) Host rocks are silicified

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Stratigraphic age (youngest) Devonian
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock type qualifier porphyry
    Stratigraphic age (youngest) Tertiary
  • Host or associated Associated
    Rock type Plutonic Rock > Porphyry
    Rock type qualifier granite
    Stratigraphic age (youngest) Tertiary

Nearby scientific data

(1) -114.07143, 41.44019
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Numerous faults cut the host rocks in the deposit area.

Ore body information

  • General form roughly tabular

Controls for ore emplacement

  • The deposit appears to have formed along a brecciated fracture zone occurring at the crest of an anticline

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1906
Year of first production 1951

Mining district

District name Tecoma District

Land status

Ownership category BLM Administrative Area
Area name Elko BLM Administrative District

Comments on the workings information

  • The Tecoma district mines are developed by many tunnels, short shafts, drifts, stopes, and the 250-ft. Jackson shaft with 6 levels. More recent surface exploration has occurred in the district.

Comments on development

  • The Jackson Mine was discovered in 1906. It was the district?s main producer, and was operating in 1951

Reference information

Bibliographic references

  • Deposit

    Granger, A.E., et al, 1957, Geology and mineral resources of Elko County, Nevada, NBMG Bull 54.

  • Deposit

    Smith, R.M., Mineral Resources of Elko County, Nevada, USGS Open File Report, 1976-56

  • Deposit

    Hill, James M., 1916, Notes on some Mining Districts in Eastern Nevada, USGS Bull 648

  • Deposit

    laPointe and others, 1991, NBMG Bull 106

  • Deposit

    Douglas, I., 1990, Geology of the Tecoma disseminated gold-silver deposit, in Shaddrick, D.R., Kizis, J.A., Jr., and Hunsaker, E.L., III, eds., Geology and ore deposits of the Great Basin; a Symposium: Reno, Geological Society of Nevada, p. 175-176.

  • Deposit

    Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Significant deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 90-206A, 33 p.; 98-206B. one 3.5 inch diskette.

  • Deposit

    Ian Douglas, 1984, Geology and gold-silver mineralization of the Tecoma District, Elko County, Nevada and Box Elder County, Utah, MS Thesis, Stanford Univ.

  • Deposit

    Tingley, J. V., 1980, unpublished field notes on file, NMBG

General comments

Subject category Comment text
Deposit Ore bodies in the district are replacements of limestone in jasperoid along a fracture zone. The jasperoid zone is up to 40 ft wide. Wulfenite crystals occur on calcite within the zone.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1979 LaPointe, D.D. Nevada Bureau of Mines and Geology
Editor 01-SEP-2007 Schruben, Paul G. U.S. Geological Survey Converted from S&A FileMaker format to Oracle. Edit checks on rocks, units, and ages with Geolex search, and other fields.

Beyond USGS

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

Maps centered on this site

Authoritative Nevada resources

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