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  3. Mineral Resource Data System (MRDS)

Long Tom Mine

Past Producer in Graham county in Arizona, United States with commodities Gold, Silver
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10027018
MRDS ID M001726
Record type Site
Current site name Long Tom Mine
Alternate or previous names Knothe, Roberts Gold, Roberts Silver
Related records 10234503

Geographic coordinates

Geographic coordinates: -110.33734, 32.57705 (WGS84)
Elevation 1798
Relative position 6.5 MILES MILES E OF PINAL-GRAHAM COUNTY LINE.

Site location context

Political divisions (FIPS codes)

Graham(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bassett Peak(quadrangle 1:24,000 scale)

Mammoth(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower San Pedro(hydrologic unit)

San Pedro-Willcox(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Coronado National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Galiuro Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Arizona Graham

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 010S 020E 07 Arizona

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Pyrite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Economic information

Ore body information

  • General form TABULAR
    Strike S E
    Dip NE
    Width 0.91M

Controls for ore emplacement

  • Richest Ore Occurs Near The Hanging Wall.

Economic information about the deposit and operations

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

Mining district

District name Rattlesnake District

Land status

Ownership category National Forest

Ownership information

  • Type Owner-Operator
    Owner E. Knothe : R. C. Roberts
    First year 1934

Comments on the production information

  • YEARS OF RECORD: 1923 - 1928 , 1933 - 1935 .

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 12.19M

Comments on the workings information

  • SEVERAL OPEN CUTS, A 40 FT SHAFT WITH A DRIFT 30 FT NORTH AND A STUB 20 FT LONG TO THE SOUTH FROM THE BOTTOM OF THE SHAFT.

Comments on development

  • 3 UNPATENTED CLAIMS (1965)

Reference information

Bibliographic references

  • Deposit

    ABM BULL 137, P. 194.

  • Deposit

    ADMR FILE DATA.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1979 Johnson, Kris H. (Creasey, S.C.) U.S. Geological Survey
Updater 01-JAN-1982 Laraba, Peter (Gest, Don E.) U.S. Geological Survey
Updater 18-APR-1995 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

External references

Maps centered on this site

Authoritative Arizona resources

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