Commodities
PrimaryMica
SecondaryBeryllium, Tantalum, Niobium (Columbium), Arsenic, Lead, Sulfur-Pyrite, Copper
Commodity typeB
Deposit
Deposit sizeS
Orebody formIRREGULAR LENS
Ore controlPegmatite Dike
Materials
Ore mineralsBeryl, Chalcopyrite, Galena, Marcasite, Microlite, Muscovite, Pyrite, Pyrochlore
GangueAlbite, Allanite, Biotite, Calcite, Garnet, Kaolin, Monazite, Oligoclase, Quartz, Sericite, Tourmaline, Zircon
Geology
Host rockGneiss · Gneiss Chopawamsic Formation
StructureNe-Sw Trend, Faults
Tectonic settingPiedmont
Economic & production
Development statusPast Producer
First production1866
Discovery year1866
Identification
Deposit ID10080102
MRDS IDW031176
Alternate namesJefferson No. 4 Mine, Bland Mine
RegionNA
Data scoreB
Coordinates37.382, -77.96554
References
LEMKE, JAHNS, AND GRIFFITTS, 1952, MICA DEPOSITS OF THE SOUTHEASTERN PIEDMONT, PART 2. AMELIA DISTRICT, VIRGINIA, USGS PROF. PAPER 248-B, PP. 103-139.BROWN, W.R., 1962, MICA AND FELDSPAR DEPOSITS OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES: MINERAL RESOURCES REPORT 3, 195 P.STERRETT, D.B., 1923, MICA DEPOSITS OF THE UNITED STATES: U.S. GEOLOGICAL SURVEY BULLETIN 740, PP. 307-330.PEGAU, A.A., 1932, PEGMATITE DEPOSITS OF VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 33, 123 P.1866? DIREXPL MR. SKELTON-DUG OPEN CUTS, SHAFT, MINED1895 DIREXPL BENZ GRINDSTAFF-SUNK SHAFT, MINED1913 DIREXPL J. BOYD BLAND-REWORKED MINE1943 DIREXPL CHAMPION MINING CO. - DUG SHAFTS, MINEDBROWN (1962)