Description
Iron-?, Zinc-David S. Forney
Commodities
PrimaryZinc, Iron
TertiarySulfur-Pyrite
Commodity typeM
Deposit
Model228: Mississippi Valley, Appalachian Zn
Deposit sizeM
Orebody formIRREGULAR
Ore controlOre Concentrated In "Valleys" Around Residual Dolostone/Limestone Chimneys.
Materials
Ore mineralsGoethite, Hemimorphite, Hydrozincite, Pyrite, Smithsonite, Sphalerite
GangueBarite, Calcite, Dolomite
Geology
Host rockClay, Mud,Dolomite · Residuum;Shady Formation (Austinville (Saccaroidal) Member)
StructureNe-Sw Trend, Galena Synclinal Basin, Holston Mountain Fault, Hematite Mountain Overthrust, Sayer School Fault
Tectonic settingMiogeosyncline
AlterationOxidation Of Primary Sulfides
Economic & production
Development statusPast Producer
First production1854
Discovery year1854
Identification
Deposit ID10080246
MRDS IDW031352
Alternate namesManning & Squier: Pits, Bertha Mine, Barren Springs Mine
RegionNA
Data scoreB
Coordinates36.90757, -80.81036
References
CASE, W.H., 1894, THE BERTHA ZINC MINES AT BERTHA, VIRGINIA: AMERICAN INSTITUTE OF MINING ENGINEERS TRANSACTIONS, V. 22, P. 511-536.CURRIER, L.W., 1935, ZINC AND LEAD REGION OF SOUTHWESTERN VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 43, 122 P.HOLDEN, R.J., 1907, IRON, IN WATSON, T.L., MINERAL RESOURCES OF VIRGINIA: LYNCHBURG, VA., J.P. BELL CO., P. 402-491WATSON, T.L., 1905, LEAD AND ZINC DEPOSITS OF VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 1, 156 P.1854 DIREXPL BARREN SPRINGS MINE OPENED FOR IRON.1866 RECON D.S. FORNEY: DISCOVERED ZINC ORE AT BERTHA MINE.1879 DIREXPL BERTHA MINE: ZINC MINING BEGUNMCCREATH, A.S., AND D'INVILLIERS, E.V., 1887, THE NE RIVER-CRIPPLE CREEK MINERAL REGION OF VIRGINIA: HARRISBURG, PA., HARRISBURG PUBLISHING CO., 171 P.1975 OTHER R.B. NEUMAN: MISC. GEOL. INV. MAP I-709-B.HOLDEN, (1907); WATSON (1905); MCCREATH AND D'INVILLIERS (1887, P. 56).