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Boston Hill East Mines

Past Producer in Grant county in New Mexico, United States with commodities Manganese, Iron
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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. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Production statistics
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10097919
MRDS ID D011707
Record type Site
Current site name Boston Hill East Mines
Alternate or previous names Includes: Silver Spot, Legal Tender, Iron Spike, Adonis, California, Atlas, And Luck Manganese.

Geographic coordinates

Geographic coordinates: -108.27979, 32.75844 (WGS84)

Site location context

Political divisions (FIPS codes)

Grant(county)

New Mexico(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Silver City(quadrangle 1:24,000 scale)

Silver City(quadrangle 1:100,000 scale)

Silver City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Mimbres(hydrologic unit)

Mimbres(hydrologic accounting unit)

Rio Grande-Mimbres(hydrologic subregion)

Rio Grande(hydrologic region)

Geographic areas

Country State County
United States New Mexico Grant

Public Land Survey System information

Meridian Township Range Section Fraction State
018S 014W 03,10 SW4 (03); W2 (10) New Mexico

Comments on the location information

  • ON BOSTON HILL SSW OF SILVER CITY

Commodities

Commodity Importance
Manganese Critical Primary
Iron Primary

Comments on the commodity information

  • PRIMARY ORE CONTAINS HEMATITE, MAGNETITE, MESITITE (FERROAN-MANGANOAN MAGNESITE) AND MINOR BASE-METAL SULFIDES.

Materials information

Materials Type of material
Hematite Ore
Limonite Ore
Magnetite Ore
Pyrolusite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
    Rock unit name Silver City Stock
    Rock description Silver City Stock
    Stratigraphic age (youngest) Late Silurian
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Silurian
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Fusselman
    Rock description Fusselman

Nearby scientific data

(1) -108.27979, 32.75844
ListMap

Economic information

Controls for ore emplacement

  • Supergene Enrichment Of Replacement Deposits Along Fractures, In Brecciated Rocks, And In Permeable Beds Cut By Ne-Trending Faults.

Economic information about the deposit and operations

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

Mining district

District name Boston Hill District (Silver City)

Production statistics

  • Year 1980
    Period 1883-1980
    Material ORE MN FE EST
    Description Cp_Grade: ^10-13% Mn, 30-40% Fe
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Iron Iron 35wt-pct
    Ore Manganese Manganese 12wt-pct

Comments on the production information

  • PRODUCTION FIGURES INCLUDE BOSTON HILL MINES PRODUCTION

Comments on the workings information

  • ORE MINED FROM HUNDREDS OF OPEN PITS, OPEN CUTS, TRENCHES, AND SHALLOW UNDERGROUND WORKINGS IN A 2.5 SQUARE KM. AREA. SOME OF THE WORKINGS HAVE SHAFTS UP TO 150 FEET DEEP WITH SOME STOPING IN THE TUNNELS.

Comments on development

  • EXPLORED IN LATE 1800'S FOR SILVER, WITH SOME PRODUCTION AS EARLY AS 1883. PRINCIPAL PRODUCTION BEGAN IN 1916 AND HAS CONTINUED WITH SOME INTERRUPTIONS TO PRESENT (1980). SINCE 1937 ALL MINING HAS BEEN FROM OPEN PITS.

Reference information

Bibliographic references

  • Deposit

    FARNHAM, L. L., 1961, U.S. BUREAU OF MINES INFORMATION CIRCULAR 8030, P. 23-25.

  • Deposit

    ENTWISTLE, L. P., 1944, NMBMMR BULL. 19, P. 55-57.

  • Deposit

    ELLIS, R. W., 1929, NEW MEXICO UNIVERSITY BULL. 167, GEOLOGICAL SERIES, V. 4, NO. 2, P. 41-42.

  • Deposit

    KELLEY, V. C., 1949, NEW MEXICO UNIVERSITY PUBLICATIONS IN GEOLOGY SERIES, NO. 2, P. 131.

  • Deposit

    SOULE, J. H., 1948A, U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4217, 5 P.

  • Deposit

    DORR, J. V. N., 1965, MANGANESE, IN MINERAL AND WATER RESOURCES OF NEW MEXICO: U.S. 89TH CONGRESS, 1ST SESSION, SENATE COMMITTEE ON INTERIOR AND INSULAR AFFAIRS, P. 183-195.

General comments

Subject category Comment text
Deposit SUPERGENE ENRICHED REPLACEMENT BODIES ALONG FRACTURES, IN BRECCIATED ROCKS AND IN PERMEABLE BEDS IN SILURIAN FUSSELMAN DOLOMITE CUT BY NE-TRENDING FAULTS ALONG THE WEST SIDE OF THE SILVER CITY STOCK. ORE BODIES OCCUR ONLY ABOVE THE WATER TABLE WHICH IS GENERALLY LESS THAN 60 M. DEEP.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1984 Seanor, Clint E. (Worl, Ron) U.S. Geological Survey

Beyond USGS

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

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