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Boston Hill 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 10014773
MRDS ID D011706
Record type Site
Current site name Boston Hill Mines
Alternate or previous names Includes: Comanche, Raven, North Pit, Silver Pick, Second Value, And Fierro No. 1

Geographic coordinates

Geographic coordinates: -108.29229, 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 04,09 SE4 (04) OF N2 (09) New Mexico

Comments on the location information

  • ON BOSTON HILL SW 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) Pliocene
    Stratigraphic age (youngest) Late Ordovician
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Montoya;El Paso
    Rock description Montoya;El Paso

Nearby scientific data

(1) -108.29229, 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
    Description Cp_Grade: ^10-13% Mn, 30-40% Fe
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 35wt-pct
    Major Ore Manganese Manganese 12wt-pct

Comments on the production information

  • PRODUCTION FIGURES INCLUDE BOSTON HILL EAST 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. ONE OF THE LARGER PITS, THE COMANCHE PIT FOLLOWS THE FIERRO FAULT 2000 FEET AND IS UP TO 250 FEET WIDE AND 320 FEET DEEP.

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, 176 P.

  • Deposit

    ENTWISTLE, L. P., 1944, NMBMMR BULL. 19, P. 60-61.

  • Deposit

    KELLEY, V. C., 1949, NEW MEXICO UNIVERSITY PUBLICATIONS IN GEOLOGY SERIES, NO. 2, P. 130.

General comments

Subject category Comment text
Deposit SUPERGENE ENRICHMENT BODIES ALONG FRACTURES, IN BRECCIATED ROCKS, AND IN PERMEABLE BEDS IN ORDOVICIAN MONTOYA AND EL PASO DOLOMITES CUT BY NE-TRENDING FAULTS ALONG WEST SIDE OF 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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