The Boston Hill Mines is a manganese and iron mine located in Grant county, New Mexico.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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Boston Hill Mines MRDS details
Site Name
Primary: Boston Hill Mines
Secondary: Includes: Comanche
Secondary: Raven
Secondary: North Pit
Secondary: Silver Pick
Secondary: Second Value
Secondary: And Fierro No. 1
Commodity
Primary: Manganese
Primary: Iron
Location
State: New Mexico
County: Grant
District: Boston Hill District (Silver City)
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Year: 1980
Time Period: 1883-1980
Description: Cp_Grade: ^10-13% Mn, 30-40% Fe
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Ordovician
Name: Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Limonite
Ore: Hematite
Ore: Pyrolusite
Ore: Magnetite
Comments
Comment (Location): ON BOSTON HILL SW OF SILVER CITY
Comment (Production): PRODUCTION FIGURES INCLUDE BOSTON HILL EAST MINES PRODUCTION
Comment (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.
Comment (Commodity): PRIMARY ORE CONTAINS HEMATITE, MAGNETITE, MESITITE (FERROAN-MANGANOAN MAGNESITE) AND MINOR BASE-METAL SULFIDES.
Comment (Workings): 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.
Comment (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.
References
Reference (Deposit): FARNHAM, L. L., 1961, U.S. BUREAU OF MINES INFORMATION CIRCULAR 8030, 176 P.
Reference (Deposit): ENTWISTLE, L. P., 1944, NMBMMR BULL. 19, P. 60-61.
Reference (Deposit): KELLEY, V. C., 1949, NEW MEXICO UNIVERSITY PUBLICATIONS IN GEOLOGY SERIES, NO. 2, P. 130.
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