Mine detail: Balmat - Edwards District

Previously called 'Balmat - Edwards - Hyatt Zinc Mines'

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Location

Lat / long: 44.28331, -75.33292

Resource(M)

Primary: Zinc
Secondary: Mercury, Silver, Lead
Ore: Sphalerite, Pyrite, Galena, Pyrrhotite, Chalcopyrite, Marcasite, Magnetite, Hematite
Gangue: Quartz, Diopside, Tremolite, Serpentine, Talc, Calcite, Barite, Anhydrite, Chlorite, Ilvaite, Grossularite
Orebody form: LENTICULAR, POD SHAPED, TABULAR
Discovery year: 1838

Production

Operation type: Surface-Underground
Deposit type: replacement
Production size: Large
Development status: Producer
First production started: 1915
Last production ended: 2008

Geology

Host rock:Upper Marble Formation
Host type:Marble
Structure:Numerous Folds, Crossfolds, Drag Folds, Fault Zones, Sylvia Lake Syncline, Ore Deposits In Overturned Limb Of An Anticlinorium
Tectonic:Grenville Lowlands
Alteration processes:Dolomitization And Silicification

References

MRDSW019003
DEP10073156
Reference{Commodity:: MCKNIGHT, E.T., NEWMAN, W.L., AND HEYL, A.V., JR., (COMPILERS), 1962, ZINC IN THE UNITED STATES EXCLUSIVE OF ALASKA AND HAWAII: U.S. GEOLOGICAL SURVEY INVESTIGATIONS RESOURCE MAP MR-19, SEPARATE TEXT, 18 P.}{Deposit:: LEA, E.R., AND DILL, D.B., JR., 1968, ZINC DEPOSITS OF THE BALMAT-EDWARDS DISTRICT, NEW YORK: IN RIDGE, J.D., ED., ORE DEPOSITS OF THE UNITED STATES 1933-1967 (GRATON-SALES VOLUME) V. 1: AMERICAN INSTITUTE OF MINING, METALLURGICAL AND PETROLEUM ENGINEERS, P. 20-48.}{Deposit:: BROWN, J.S., 1947, POROSITY AND ORE DEPOSITION OAT EDWARDS AND BALMAT, NEW YORK: GEOLOGICAL SOCIETY OF AMERICA BULLETIN, V. 58, P. 505-546.}{Deposit:: DELORRAINE, W.F., DILL, D.B., KNIGHT, R.H., AND JOHNSON, J.T., 1993, GEOLOGY OF THE BALMAT ZINC MINES, ST. LAWRENCE COUNTY, NEW YORK: IN THOMPSON, T.B., ED., SELECTED MINERAL DEPOSITS OF VERMONT AND THE ADIRONDACK MOUNTAINS, NEW YORK: SOCIETY OF ECONOMIC GEOLOGISTS GUIDEBOOK SERIES, V. 17, P. 26-48.}{Deposit:: OntZinc drills Balmat, The Northern Miner 5/17/2004}{Deposit:: ONTZINC Corporation Announces St. Lawrence Zinc Company To Commence US$1.1 Million Underground Diamond Drill Program: Dec 17, 2003 press release.}{Deposit:: Knight, Richard H., 2005, Recent zinc ore discoveries in the Balmat-Edwards district, northwest Adirondacks, New York state: a case history: Paper No. 20-6, Geological Society of America Abstracts with Programs, Vol. 37, No. 1, p. 64.}{Deposit:: Foose, M.P., 1979, A reinterpretation of the structural and stratigraphic setting of the Balmat-Edwards zinc deposits, northwest Adirondack lowlands, New York: Economic Geology, Scientific Communications, September, 1979, pp. 130-133.}{Geology:: BROWN, J.S., 1936, STRUCTURE AND PRIMARY MINERALIZATION OF THE ZINC MINE AT BALMAT, NEW YORK: ECONOMIC GEOOGY, V. 31, NO. 8, P. 233-258.}
ReporterWoodruff, Laurel G., Wedow, Helmuth, Schruben, Paul G. and Wedow, H., Beougher, Dee