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Sweetwater Mine (Milliken Mine; Frank R. Milliken; Blair Creek; Ozark Lead Company Mine; Adair Creek; Logan Creek), Ellington, Viburnum Trend District, Reynolds Co., Missouri, USA
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Galena
Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds Co., Missouri, USA

Photo: 2001 John H. Betts
Latitude: 37°14'N
Longitude: 90°58'W
 
 
A Pb-Zn mine located about 12 miles northwest of Ellington. Formerly owned by ASARCO since Dec 1987 & operated by Ozark Lead Co. Reopened Dec 1987. Later owned by the Doe Run Co., about 1999-2000.

Reserves in 1988 amounted to 22.6 million tons at an average of 4.84% Pb & 0.59% Zn.

Mining Method: Room and Pillar. Drill+Blast with LHD or mine truck haulage to ore chutes below. After crushing underground, ore is hauled to a 20 foot diameter x 1,250 foot deep, central 3-compartment hoisting shaft.

Regional Geology: The Viburnum Trend is a 6 mile x 40 mile North trending deposit discovered in the late 1950s and early 1960s whose lead-silver-zinc deposits are exploited by the Brushy Creek, Buick, Fletcher, Magmont, Sweetwater, West Fork, and Viburnum mines Nos. 27, 28, 29, and 35 at depths ranging from 1,000-1,450 feet.

The Viburnum Trend deposits differ from other Mississippi Valley-type lead-zinc ore deposits in that ores are shallower, they include nickel and cobalt minerals, and some copper-iron sulfides. Also, while ores were formed from hot, saline brines, it is generally accepted that for the Viburnum Trend, this was a repetitive precipitation and dissolution process for the sulfides, particularly galena and suggests that the ore-forming base metal constituents were transported with reduced sulphur in the same solutions, with precipitation initiated by a change in pH, dilution, and/or a decrease in temperature. For the Sweetwater ores, the repetitive precipitations comprised decreasing base metal concentrations in the mineralizing fluids.

Most ore minerals are found as sulfides such as galena, sphalerite, and chalcopyrite. Gangue minerals associated with the economic minerals include pyrite, calcite, dolomite, and quartz.

Sweetwater Geology: There are 8 distinct orebodies distributed at depth within the Bonneterre formation. The Bonneterre itself comprises four facies; fore reef, reef complex, back reef, and shelf. These facies are petrographic units developed in response to sea level fluctuations and the distribution of Precambrian knobs and ridges in a shallow Cambrian sea. Oolitic and digitate stromatolite facies predominate in the mine, and stratigraphic relationships record a prograding sedimentary pattern during lower Bonneterre sedimentation that expresses as an interfingering of the planar stromatolitic burrowed lime mudstone (reef complex) facies with the digitate (back reef) facies.

Mineral List

Anilite
'Bitumen'
Bornite
Calcite
Carrollite
Chalcocite
Chalcopyrite
Covellite
Dickite
Digenite
Djurleite
Dolomite
Erythrite
Fletcherite
Galena
Malachite
Marcasite
Millerite
Polydymite
Pyrite
Quartz
Siegenite
Sphalerite
Vaesite


24 entries listed. 23 valid minerals.

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References

CHAPTER IN AIME WORLD SYMPOSIUM ON MINING AND METALLURGY OF LEAD AND ZINC (1970), EDITED BY D. O. RAUSCH AND B. C. MARIACHER. THE AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS. N.Y., N.Y., VOL. I: 483-498.

CHRISTIANSEN, C.R., AND J.J. SCOTT (1970), MINING SYSTEMS IN THE NEW LEAD BELT OF SOUTHEAST MISSOURI. CHAPTER 11 IN VOL. 1 OF LEAD & ZINC, A.I.M.E. SYMPOSIUM, 1970: 206-217.

ENGINEERING AND MINING JOURNAL (1970), THE NEW LEAD BELT (OCTOBER 1970): 67-78.

RYAN, J.P., AND MARTIN, J.A. (1971), THE MINERAL INDUSTRY OF MISSOURI: USBM MINERALS YEARBOOK, VOL. 2, AREA REPORTS: DOMESTIC: 423-435.

U.S. BUREAU OF MINES MINERALS YEARBOOK (1971), VOL. 2: 431.

GERITY, C.E. (1972), OZARK'S HAULAGE SYSTEM GETS THE LEAD OUT. MINING ENGINEERING, NOVEMBER 1972: 41-44.

LAGERGREN, M.A., AND A.W. GRIFFITH (1973), DESIGN CONSTRUCTION AND OPERATION OF OZARK LEAD COMPANY'S TAILINGS DISPOSAL SYSTEM. PROCEEDINGS (ENTITLED "TAILINGS DISPOSAL TODAY") OF THE FIRST INTERNATIONAL TAILING SYMPOSIUM, OCT. 31 - NOV. 3, 1972, MILLER FREEMAN PUBLICATIONS, SAN FRANCISCO, CA., 1973, PP. 714-733.

MOUAT, M.M., AND C.W. CLENDENIN, JR. (1975), OZARK LEAD COMPANY MINE, VIRBURNUM TREND, SOUTHEAST MISSOURI. CHAPTER IN GUIDEBOOK TO THE GEOLOGY AND ORE DEPOSITS OF SELECTED MINES, MISSOURI DEPT. NAT. RES. REPT. INVESTIGATIONS NO. 58, 1975: 48-56.

MOUAT, M.M., AND CLENDENIN, C.W. (1977), GEOLOGY OF THE OZARK LEAD COMPANY MINE, VIBURNUM TREND, SOUTHEAST MISSOURI: ECONOMIC GEOLOGY: 72(3): 398-407.

WHITE, T. G., AND K. L. CLIFFORD (1977), MILLING OF LEAD-ZINC ORES - USA. CHAPTER IN LEAD-ZINC UPDATE, ED. BY D. O. RAUSCH, F. M. STEPHENS, JR., AND B. C. MARIACHER. SOCIETY OF MINING ENGINEERS OF THE AMERICAN INSTITUTE OF MINING METALLURGICAL AND PETROLEUM ENGINEERS, N.Y., N.Y., 1977: 125, 127, 135, 137, 140-143.

DRESSEL, W. M. (1979). (FORMER STATE LIASON OFFICER). PERSONAL COMMUNICATIONS, 8-2-79.

WEAKLY, L. A. (1982), ORE MOVING LOGISTICS FOR ROOM AND PILLAR MINES IN THE VIBURNUM TREND. MINING ENGINEERING, APRIL 1982: 406-407.

SKILLINGS MINING REVIEW MAGAZINE (1987), ASARCO SLATES SWEETWATER MINE FOR LIMITED PRODUCTION. AUG 8, 1987: 3.

U.S. Bureau of Mines Minerals Yearbook - Zinc (1988): 2.

Mining Magazine (1989), January: 45

Mineralogical Record (1989): 20: 481.

Rocks & Minerals (1989): 64: 22 & 26.

ASARCO INC. (1993), SEC FORM 10-K REPORT, DEC 31, 1993: A16-A18.

ASARCO INCORPORATED (1995) ASARCO-10K REPORT.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10293984 & 10085082 (& 10196555 = mill).

American Mineral Treasures (2008), Lithographie, LLC: 66-73.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0291790008 (& 0291790009 = mill).

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