A copper mine. Commercial mining began in 1837 and carried on until 1953.
References:
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 693.
Weed, Walter H. (1911): Copper Deposits of the Appalachian States (USGS Bulletin 455)
Rocks & Minerals 11:37.
Mineralogical Record 32:433.
Mineral List:24 entries listed. 21 valid minerals.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!