Description
Bertha Mineral Company
Commodities
PrimaryZinc, Lead
SecondarySulfur-Pyrite
Commodity typeM
Deposit
Model228: Mississippi Valley, Appalachian Zn
Deposit sizeS
WorkingsSurface/Underground
Orebody formIRREGULAR, LENSE
Ore controlShear Zone
Materials
Ore mineralsGalena, Hemimorphite, Pyrite, Smithsonite, Sphalerite
GangueCalcite, Dolomite, Fluorite
Geology
Host rockDolomite · Shady Formation
StructureNe-Sw Trend, Pulaski Thrust Fault, Holston Mountain Fault, Thrust Faulting Of Folded Strata, Anticline, Transuerse Fault
Tectonic settingMiogeosyncline
AlterationOxidation Of Zinc Sulfides.
Economic & production
Development statusPast Producer
First production1895
Last production1907
Discovery year1895
Identification
Deposit ID10080248
MRDS IDW031354
Alternate namesCedar Springs Mines
RegionNA
Data scoreB
Coordinates36.82813, -81.28288
References
CURRIER, L.W., 1935, ZINC AND LEAD REGION OF SOUTHWESTERN VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 43, 122 P.RANKIN, D.W., ESPENSHADE, G.H., AND NEUMAN, R.B., 1972, GEOLOGIC MAP OF THE WEST HALF OF THE WINSTON-SALEM QUADRANGLE, NORTH CAROLINA-VIRGINIA, AND TENNESSEE: U.S. GEOLOGICAL SURVEY MISCELLANEOUS GEOLOGIC INVESTIGATIONS MAP I-709-A, 1 SHEET, SCALE 1:250,000.WATSON, T.L., 1905, LEAD AND ZINC DEPOSITS OF VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 1, 156 P.WATSON, T.L., 1907, MINERAL RESOURCES OF VIRGINIA: LYNCHBURG, VA., J.P. BELL CO., 618 P.1934 GEOLMAP VA. GEOL. SURV.: ISSUED BULL. 43.1972 GEOLMAP R.B. NEUMAN: MISC. GEOL. INV. MAP I-709-A.