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Narragansett Mine

Past Producer in Pima county in Arizona, United States with commodities Copper, Silver, Lead, Zinc, Gold
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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. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10039412
MRDS ID M050046
Record type Site
Current site name Narragansett Mine
Related records 10184447

Geographic coordinates

Geographic coordinates: -110.75985, 31.84596 (WGS84)
Elevation 1679
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 25 Arizona

Comments on the location information

  • NE 1/4 SECTION 25.

Commodities

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

Comments on the commodity information

  • MINOR AMT OF CHALCOCITE AND CHALCOPYRITE. MALACHITE - AZURITE - CHALCOCITE PROBABLY SECONDARY AFTER CHALCOPYRITE.

Materials information

Materials Type of material
Chalcopyrite Ore
Malachite Ore
Pyrite Ore

Alteration

  • (Local) Intense Silicification. Px-Cp-Gossan; Skarn

Analytical data

Result GRAB SAMPLE FROM DUMP SHOWS (.0004 PERCENT BEO. (WARNER - 1959.)

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Rock unit name Quartz Latite Paleocene 56m.Y. +-2m.Y. Quartz Latite Porph. Stock
    Rock description Quartz Latite Paleocene 56m.Y. +-2m.Y. Quartz Latite Porph. Stock
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Concha Limestone Cherty Limestone;Scherrer Formation Quartzitic Ss
    Rock description Concha Limestone Cherty Limestone;Scherrer Formation Quartzitic Ss

Nearby scientific data

(1) -110.75985, 31.84596
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 Faults And Fracture Zones.

Ore body information

  • General form IRREGULAR LENTICULAR ZONES

Controls for ore emplacement

  • Fracture Zones

Comments on the geologic information

  • ORE GENERALLY IN LIME-SILICATE ZONE CONTROLLED BY FAULTS AND FRACTURES. ; GEOL.DESC: AGE OF MINERALIZATION BELIEVED TO BE NEARLY THAT OF QUARTZ LATITE INTRUSIVE. ; REG.COM: STRUCTURE IN DISTRICT = THRUST FAULTING HIGH ANGLE NORMAL FAULTING AND FOLDING.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1877
Discoverer J. K. Brown
Year of first production 1907
Year of last production 1961

Mining district

District name Helvetia-Rosemont District

Land status

Ownership category National Forest

Production statistics

  • Year 1961
    Period 1870-1961
    Material ORE CU
    Accuracy Estimate
    Description Cp_Grade: ^4% Cu, 0.5 Oz Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 4wt-pct
    Minor Ore Silver Silver 14g/mt

Workings at the site

  • Type of workings Underground
    Area 0.006HA
    Length 792.48M

Comments on the workings information

  • DISTRICT IS POSSIBLY NEW PORPHRY COPPER DEPOSIT.

Comments on development

  • OPERATORS INCLUDED F.A. BENNETT, NARRAGANSET MINE, W.R. RAMSDELL; DAYLIGHT MINE IS IMMEDIATELY ADJACENT

Reference information

Bibliographic references

  • Deposit

    SCHRADER, F. C. 1915, US.G.S. BULL. 582

  • Deposit

    CREASEY, S.C., 1955 U.S.G.S. BULL. 1027F

  • Deposit

    ARIZONA BUREAU OF MINES, 1971, FIELDNOTES, V. 1 NO. 2

  • Deposit

    DREWES, H., 1971, U.S.G.S. MAP I-613 (SAHUARITA QUAD)

  • Deposit

    1909 RECON F. C. SCHRADER AND J.M. HILL U.S.G.S. BULL. 582

  • Deposit

    1943 GEOLMAP S. C. CREASEY AND G.L. QUICK U.S.G.S. BULL. 1027F

  • Deposit

    1970 DIREXPL ANACONDA - POSSIBLE NEW PORPH. COPPER.

  • Production

    (8)KEITH,S.B.,1974;(9,10)ELSING,1936,ABM BULLETIN 14E F4 (5)KEITH,S.B.,1974,ABM BULLETIN 189,P.125.

General comments

Subject category Comment text
Deposit ORE SHOOT LIES ALONG AXIS OF S. PLUNGING SYNCLINE IN FOLDED LOW ANGLE THRUST. CRUSHED ZONE IN LIMESTONE
Deposit THE STRATIGRAPHIC UNITS USED ARE THOSE OF H. DREWES, 1971, U.S.G.S. MAP I-613; REF: WARNER, L.A. AND OTHERS, 1959, USGS P.P. 318. ALSO ELSING, M.J. 1936, ARIZONA BUREAU OF MINES, ECONOMIC SERIES NO.19 BULL. NO.140. ; INFO.SRC : 1 PUB LIT
Deposit Discovery Year: LATE 1870S.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Keith, William 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.