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  3. Mineral Resource Data System (MRDS)

Pilot Claim

Occurrence in Pima county in Arizona, United States with commodity Copper
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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. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10039493
MRDS ID M050163
Record type Site
Current site name Pilot Claim
Related records 10210408

Geographic coordinates

Geographic coordinates: -110.76235, 31.8593 (WGS84)
Elevation 1512
Relative position 28 MILES S.E. OF TUCSON

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Helvetia(quadrangle 1:24,000 scale)

Fort Huachuca(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Rillito(hydrologic unit)

Santa Cruz(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)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 18S 15E 24 Arizona

Commodities

Commodity Importance
Copper Tertiary

Materials information

Materials Type of material
Chalcocite Ore
Copper Ore

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Horquilla Form.Limestone-Siltstone;Escabrosa Limestonelimestone
    Rock description Horquilla Form.Limestone-Siltstone;Escabrosa Limestonelimestone
    Stratigraphic age (youngest) Pennsylvanian

Nearby scientific data

(1) -110.76235, 31.8593
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Homoclinal ; Reg.Trends: Tilting And Broad Open Folds In S. And Extensive Faulting In N.
Type of structure Local
Structure description Thrust And Normal Faulting-Fracture Zones

Controls for ore emplacement

  • Shear Zone

Comments on the geologic information

  • ORE GEN. IN LIME-SILICATE ZONES CONTROLLED BY FAULTS AND FRACTURES ; MAJOR.UNITS: BASIN AND RANGE ; GEOL.DESC: AGE OF MINERALIZATION BELIEVED TO BE THAT OF THE QUARTZ LATITE INTRUSIVE OF DREWES - 1971 ; REG.COM: STRUCTURE IN DISTRICT IS THRUST FAULTING AND HIGH ANGLE NORMAL FAULTING AND FOLDING

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1915

Mining district

District name Helvetia-Rosemont District

Land status

Ownership category National Forest

Comments on the production information

  • NO PRODUCTION RECORD

Comments on the workings information

  • DISTRICT IS POSSIBLY NEW PORPH. COPPER DEPOSIT PHYSICAL DIMENSIONS NOT AVAILABLE

Comments on development

  • ANACONDA REPORTS ROSEMONT-HELVETIA INTRUSIVE QUARTZ LATITE AS POTENTIAL PORPH COPPER DEPOSIT IN 1971

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit PHYSIAL DESCRIPTION NOT AVAILABLE
Deposit THE STRATIGRAPHIC UNITS USED ARE THOSE OF H. DREWES - 1971, USGS MAP I-613 ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1972 Keith, William J. 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 Arizona resources

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