Commodities
PrimaryCopper
SecondaryZinc, Lead
TertiarySilver, Gold
Commodity typeM
Deposit
Model184: Massive sulfide, kuroko
Deposit sizeS
Materials
Ore mineralsChalcopyrite, Galena, Sphalerite, Pyrite, Bornite, Chalcocite
GangueAlbite, Biotite, Microcline, Muscovite, Quartz
Geology
Host rockMafic Metamorphic Rock · Ammonoosuc Volcanics
StructureCross-fractures
Tectonic settingBronson Hill Anticlinorium
AlterationHydrothermal Alteration
Economic & production
Development statusPast Producer
Identification
Deposit ID10106478
MRDS IDW102017
RegionNA
Data scoreC
Coordinates44.56523, -71.25361
References
Emmons, W.H., 1910, Some ore deposits in Maine and the Milan mine, New Hampshire: U.S. Geological Survey Bulletin 432, 62 p.Gair, J. E. and Slack, J.F., 1979, Map showing lithostratigraphic and structural setting of stratabound (massive) sulfide deposits in U.S. Appalachians: U.S. Geological Survey Open-File Report 79-1517, scale 1:1,000,000.Moench, R.H., 1990, The Piermont allochthon, northern Connecticut Valley Area, New England -- Preliminary description and resource implications: in Slack, J.F. (editor), Summary results of the Glens Falls CUSMAP Project, New York, Vermont, and New Hampshire: U.S. Geological Survey Bulletin 1887, p. J1-J23.