Mine detail: Milan Mine

Previously called ''

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Location

Lat / long: 44.56523, -71.25361

Resource(M)

Primary: Copper
Secondary: Lead, Zinc
Tertiary: Gold, Silver
Ore: Chalcopyrite, Galena, Sphalerite, Pyrite, Bornite, Chalcocite
Gangue: Albite, Biotite, Microcline, Muscovite, Quartz

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer

Geology

Host rock:Ammonoosuc Volcanics
Host type:Mafic Metamorphic Rock
Structure:Cross-fractures
Tectonic:Bronson Hill Anticlinorium
Alteration processes:Hydrothermal Alteration

References

MRDSW102017
DEP10106478
Reference{Deposit:: Emmons, W.H., 1910, Some ore deposits in Maine and the Milan mine, New Hampshire: U.S. Geological Survey Bulletin 432, 62 p.}{Geology:: 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.}{Geology:: 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.}
ReporterWhitlow, S., Woodruff, Laurel G.