Mine detail: Cofer Prospect

Previously called ''

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Location

Lat / long: 38.05005, -77.87499

Resource(M)

Primary: Copper, Zinc, Lead
Secondary: Gold, Silver, Sulfur-Pyrite, Arsenic
Ore: Bismuth, Bornite, Boulangerite, Chalcocite, Chalcopyrite, Covellite, Digenite, Electrum, Galena, Hematite, Ilmenite, Magnetite, Marcasite, Molybdenite, Pyrite, Pyrrhotite, Rutile, Sphalerite
Gangue: Biotite, Feldspar, Gahnite, Muscovite, Quartz
Orebody form: POD/LENS (SUBPARALLEL LENSES)
Discovery year: 1955

Production

Operation type: Unknown
Production size: None
Development status: Occurrence

Geology

Host rock:Chopawamsic Formation
Host type:Gneiss,Siltstone
Associated rock:Chopawamsic Formation
Associated type:Metavolcanic Rock,Felsic Metamorphic Rock,Amphibolite
Structure:Ne-Sw Trend
Tectonic:Eugeosyncline (Piedmont)
Alteration processes:High Temperature, Low To Medium Grade Metamorphism.

References

MRDSW031306
DEP10080205
Reference{Analytical Data:: SRC.REF: MILLER (1978)}{Deposit:: GAIR, J.E., (ED.), 1978, MASSIVE SULFIDES OF VIRGINIA FIELD TRIP GUIDEBOOK: INTERNATIONAL GEOLOGICAL CORRELATION PROGRAMME, PROJECT NO. 60, 112 P.}{Deposit:: HODDER, R.W., KAZDA, R.F., AND BOJTOS, P., 1977, AN EXAMPLE OF BASE METAL MASSIVE SULFIDE DEPOSITS FROM WITHIN A TURBIDITE SUCCESSION OF THE VIRGINIA PIEDMONT (ABS.): MINING ENGINEERING, V. 29, NO. 1, P. 83.}{Deposit:: MILLER, J.W., CRAIG, J.R. AND KAZDA, R.F., 1978, VOLCANOGENIC SULFIDES OF THE MINERAL DISTRICT, LOUISA CO., VIRGINIA (ABS.): GEOLOGICAL SOCIETY OF AMERICA: ABSTRACTS WITH PROGRAMS, V. 10, NO. 7, P. 457}{Deposit:: MILLER, J.W., CRAIG, J.R. AND KAZDA, R.F., 1979, METAMORPHOSED VOLCANOGENIC ORES OF THE COFER DEPOSIT, MINERAL DISTRICT, LOUISA CO., VIRGINIA (ABS.): GEOLOGICAL SOCIETY OF AMERICA: ABSTRACTS WITH PROGRAMS, V. 11, NO. 4, P. 205-206.}{Deposit:: MILLER, J.W., JR., 1978, THE ORE MINERALOGY OF THE COFER PROPERTY, LOUISA COUNTY, VIRGINIA: A VOLCANOGENIC MASSIVE SULFIDE DEPOSIT: VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY, UNPUBLISHED MS THESIS.}{Deposit:: 1950 DIREXPL NEW JERSEY ZINC CO.: LOCATED DEPOSIT}{Deposit:: 1975 DIREXPL PIEDMONT MINERAL ASSOCIATES: CONDUCTED EXPLORATORY DRILLING AND MINING TO EVALUATE.}
ReporterMeintzer, Robert E. (Le Van, D.C.)