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West Fork Mine, West Fork, Viburnum Trend District, Reynolds Co., Missouri, USA

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Latitude & Longitude (WGS84): 37° 29' 31'' North , 91° 6' 37'' West
Latitude & Longitude (decimal): 37.49196,-91.11031
Köppen climate type:Cfa : Humid subtropical climate

A Pb-Zn-Ag-Cu occurrence/mine located 0.1 km (0.0 mile) E of West Fork (proper) and 14.4 km (9.0 miles) WNW of Centerville. The mine was initially developed and operated by ASARCO, Inc., and sold to The Doe Run Company in 1998.

Reached full production of 3,400 tons/day of ore in August 1988. Produces 46,000 tons Pb, 6,800 tons Zn, 3,900 kg Ag per year.

Mineral List

14 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

252.17 - 541 Ma

ID: 3187973
Paleozoic sedimentary rocks

Age: Paleozoic (252.17 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

485.4 - 497 Ma

ID: 2822348
Eminence Dolomite, Potosi Dolomite

Age: Furongian (485.4 - 497 Ma)

Stratigraphic Name: Eminence Dolomite; Potosi Dolomite

Description: Eminence Dolomite - dolomite with some druse - coated chert. Potosi Dolomite - dolomite with abundance of druse - coated chert.

Comments: Eminence Dolomite- (350 ft. max) massive bedded dolomite with some chert blocks, boulders and nodules; Potosi Dolomite- (300 ft. max) massive bedded dolomite with abundant quart druse chert. Some copper production at contact of Eminence Dolomite with Precambrian rhyolite.

Lithology: Major:{dolostone}, Minor:{chert}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mining Annual Review (1985): 323.
Minerals Yearbook (1988) - Zinc: 2.
Rocks & Minerals (1989): 64: 23.
Mavrogenes, J.A., Hagni, R.D., and Dingess, P.R. (1992) Mineralogy, paragenesis, and mineral zoning of the West Fork Mine, Viburnum Trend, Southeast Missouri, Economic Geology: 87 (1): 113-124.
Lapis (1992): 17(1): 15-23.
Economic Geology (1995): 90: 228-245.
Rocks & Minerals (1998): 73(2): 98-117.
American Mineral Treasures (2008), Lithographie, LLC: 66-73.

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