Magmont Mine

Iron County, Missouri, United States

LeadCadmiumSilverCopperZincCobaltNickel

Description

Cominco American, Inc. And Dresser Industries, Inc. Adjacent (and subsequently purchased) Boss Bixby deposit, discovered in 1956.

Commodities

PrimaryLead

SecondaryCadmium, Silver, Copper, Zinc

TertiaryCobalt, Nickel

Commodity typeM

Deposit

Model224: Mississippi Valley, S.E. Missouri Pb-Zn

Deposit sizeM

WorkingsUnderground

Orebody formTABULAR

Ore controlSolution-Induced Collapse Breccias, Gravity Slumps, The "Silty Marker", And Inter-Reef Calcarenites

Materials

Ore mineralsGalena, Sphalerite, Bornite, Bravoite, Chalcopyrite, Linnaeite, Marcasite, Millerite, Pyrite, Siegenite

GangueCalcite, Dickite, Dolomite, Kaolinite, Quartz, Soda Niter

Geology

Host rockSandstone,Dolomite · "Lamotte Sandstone", "Bonneterre Fm.", "Davis Fm."

StructureOzark Dome, St. Francios Igneous High , Buick Embayment, Davis Shale Overlies The Bonneterre Formation And Has Acted As An Impervious Barrier To Solution Flow. Underlying Precambrian Knobs Are Not Present. Joint System Oriented About N 50 Deg E And N 30 Deg W. High Ore Zone Is Bound By Faults Which Can Be Traced Continuously For About 4500 Ft In The Magmont Mine And Extend North And South Into Adjoining Property. All The High Ore Along This 4500 Ft Is Marked On Both East And West Sides By These Distinctive Shale-Filled Subsidence Fractures.

Tectonic settingFaulted Algal Reef Structure Around St. Francois Mtns.

Economic & production

Development statusProducer

First production1968

Discovery year1962

Identification

Deposit ID10073171

MRDS IDW019028

Alternate namesBoss Bixby Lead Deposit, Casteel Viburnum # 35, Magmont West

RegionNA

Data scoreA

Coordinates37.63949, -91.12258

References

SNYDER, F. G., GERDEMANN, P. E., 1968, GEOLOGY OF THE SOUTHEAST MISSOURI LEAD DISTRICT; IN RIDGE, J. D. ED., ORE DEPOSITS OF THE U.S., 1933-1967, V. 1 P. 326-358SCHWANDT, A.J.W., 1970, THE MAGMONT OPERATION; IN RAUSCH, D.O. & MARIACHER, B.C., EDS., 1970, AIME WORLD SYMPOSIUM ON MINING AND METALLURGY, LEAD & ZINC V. 1 PP. 218-227.SWEENEY, PETER H., HARRISON, EDWIN D., BRADLEY, MILTON, 1977, GEOLOGY OF THE MAGMONT MINE, VIBURNUM TREND, SOUTHEAST MISSOURI, ECON. GEOL., V. 72, P. 365-371.HAGNI, RICHARD D. AND TRANCYNGER, THOMAS C., 1977, SEQUENCE OF DEPOSITION OF THE ORE MINERALS AT THE MAGMONT MINE, VIBURNUM TREND, SOUTHEAST MISSOURI, ECON. GEOL., V. 72, P. 451-464.SWEENEY, PETER H., HARRISON, EDWIN, BRADLEY, MILTON, 1975, MAGMONT MINE (COMINCO AMERICAN INC. & DRESSER INDUSTRIES INC.), VIBURNUM TREND, SOUTHEAST MISSOURI; IN GUIDEBOOK TO THE GEOLOGY AND ORE DEPOSITS OF SELECTED MINES IN THE VIBURNUM TREND, MISSOURI, NO. 58, ROLLA, MISSOURI PP. 21-29.Bradley, M.F., and Krolak, T.E., 1989, The Magmont-West lead-zinc-copper\nmine (Cominco American Incorporated?Dresser Minerals) Viburnum\nTrend, Southeast Missouri, Mississsippi Valley-type mineralization of the\nViburnum Trend, Missouri: Society of Economic Geologists Field Conference\nGuidebook, v. 5, p. 84?95.Hagni, R.D., 1995, The Southeast Missouri lead district: Society of Economic Geologists Guidebook Series, v. 22, p. 44?78.KISVARSANYI, GEZA, 1977 , THE ROLE OF THE PRECAMBRIAN IGNEOUS BASEMENT IN THE FORMATION OF THE STRATABOUND LEAD-ZINC-COPPER DEPOSITS IN SOUTHEAST MISSOURI, ECON. GEOL., V. 72 , P. 435 - 442.SMITH, FREDERICK J., 1968 , MINERALIZATION OF THE BOSS BIXBY ANOMALY, IRON AND DENT COUNTIES, MISSOURI, MASTER'S THESIS, UNIV. MISSOURI-ROLLA, 76 P.KINKEL, A.R., JR., 1967, COPPER, IN MINERAL AND WATER RESOURCES OF MISSOURI: MISSOURI DIVISION OF GEOLOGICAL SURVEY AND WATER RESOURCES, V. 43, P. 67.KISVARSANYI, GEZA, AND PROCTOR, P.D., 1967, TRACE ELEMENT CONTENT OF MAGNETITES AND HEMATITES, SOUTHEAST MISSOURI IRON METALLOGENIC PROVINCE, U.S.A.: ECON. GEOL., V. 62, NO. 1, P. 449-471.MC ILROY P., COFFMAN, J.S., HIBPSHMAN, M.H., 1974, AVAILABILITY OF U.S. PRIMARY LEAD RESOURCES. U.S.B.M., IC 8646.US BUREAU OF MINES, 1978E/MJ DIRECTORY 1975, 1976, 1980 p. 199.