Commodities
PrimarySulfur-Pyrite
TertiaryZinc, Lead, Copper, Gold, Silver
Commodity typeM
Deposit
Model184: Massive sulfide, kuroko
Deposit sizeM
WorkingsUnderground
Orebody formPOD/LENS
Materials
Ore mineralsChalcopyrite, Galena, Pyrite, Pyrrhotite, Sphalerite
GangueBiotite, Calcite, Chlorite, Epidote, Garnet, Hornblende, Quartz, Tourmaline
Geology
Host rockSchist · Chopawamsic Formation;Quantico Formation, Slate;Greenstone, Altered Basalt
Associated rockGreenstone · Chopawamsic Formation
StructureNortheast-Southwest, Columbia-Quantico Syncline
Tectonic settingPiedmont
Economic & production
Development statusPast Producer
First production1889
Identification
Deposit ID10067564
MRDS IDW000349
Alternate namesDumfries Mine
RegionNA
Data scoreB
Coordinates38.57476, -77.34802
References
LONSDALE, J. T., 1927, VA. GEOLOGICAL SURVEY BULL. 30, PP. 10, 85-89.WATSON, T. L., 1907, "MINERAL RESOURCES OF VA.", PP. 202-204.MIXON, R B, SOUTHWICK, D L, AND REED, J C, JR, 1972, GEOLOGIC MAP OF THE QUANTICO QUADRANGLE, PRINCE WILLIAM AND STAFFORD COUNTIES, VIRGINIA, AND CHARLES COUNTY, MARYLAND: US GEOLOGICAL SURVEY GQ-1044, 1 SHEET, SCALE 1:24 000.SWEET, P C, 1980, GOLD IN VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, PUBLICATION 19, 77 P1889 DIREXPL MINE OPENED1908 DIREXPL STEADY PRODUCTION FIRST BEGUN1919 DIREXPL LAST YEAR OF STEADY PRODUCTION1920 OTHER MINE ABANDONEDLONSDALE (1927)