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  3. Mineral Resource Data System (MRDS)

Falls Claim

Past Producer in Pima county in Arizona, United States with commodities Copper, 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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Production statistics
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10026769
MRDS ID M000172
Record type Site
Current site name Falls Claim
Related records 10186708

Geographic coordinates

Geographic coordinates: -110.76346, 31.83902 (WGS84)
Elevation 1743
Relative position 2 MILES SE OF HELVETIA.

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 018S 015E 25 CENTER Arizona

Commodities

Commodity Importance
Copper Primary
Silver Secondary

Materials information

Materials Type of material
Copper Ore

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Stratigraphic age (youngest) Late Permian

Nearby scientific data

(1) -110.76346, 31.83902
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Thrust - Faulted Segments Of Limestone, Cut By Cross Faulting.

Ore body information

  • General form IRREGULAR LENSES

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1958
Year of last production 1959

Mining district

District name Helvetia - Rosemont District

Land status

Ownership category National Forest
Area name Coronado National Forest

Production statistics

  • Year 1959
    Period 1958 - 1959
    Accuracy Estimate
    Description Cp_Grade: ^5 % Cu, 0.3 Oz. Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 8g/mt
    Minor Ore Copper Copper 5wt-pct

Comments on the workings information

  • SHALLOW SHAFT AND TUNNEL.

Comments on development

  • OPERATORS INCLUDED LEWISOHN COPPER

Reference information

Bibliographic references

  • Deposit

    KEITH, S.B., 1974, INDEX OF MINING PROPERTIES IN PIMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 189, P. 125

  • Production

    ABM BULLETIN 189, P. 125.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1979 Johnson, Kris H. (Creasey, S.C.) 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.