Commodities
TertiaryIron, Copper, Cobalt
Commodity typeM
Materials
Other materialsActinolite, Bornite, Calcite, Carrollite, Chalcocite, Chalcopyrite, Chlorite, Covellite, Epidote, Gahnite, Hematite, Limonite, Magnetite, Malachite, Pyrite, Quartz, Siegenite, Sphalerite, Zoisite
Economic & production
Development statusPast Producer
First production1749
Identification
Deposit ID10242703
MRDS IDW017504
RegionNA
Data scoreB
Coordinates39.43813, -76.92997
References
BUREAU OF MINES, WAR MIN. MEMORANDUM, MINERAL HILLS MINE, CACO, MARYLAND, REGIONAL FILE NO. E 296, FEB 1943. (CONFIDENTICONFIDENTIAL WAR MIN REPT FILE, MISC. REPTS, MINERAL HILL MICARROLL CO, MD.ESPENSHADE, GILBERT K., REPT. ON MARYLAND COPPER MINES AND PS, USGS, AUG 13, 1942 (CONFIDENTIAL) P.6.HEYL, ALLEN V, AND PEARRE, NANCY C, MD BOARD OF NAT RES MD GSUR BULL 28, 1965, PP 66.