"The Raymond Widel barite prospect is two miles northeast of Blackwater Town, in parts of Sections 23, 24, 25, and 26, T49N, R19W, Cooper County, Missouri. Reported in the area since the 1850's barite-galena deposits have been sporadically mined.
The Burlington-Keokuk and Warsaw formations of Mississippian age are exposed. The former is composed of coarse-grained limestone with abundant fossils, and the latter is a fossiliferous cherty limestone. These reach a thickness of over 200 feet. Local structures are not significant, but regional fold and fault structures are present outside the area.
Exploration drilling consisted of 31 drill holes ranging from 10 to 80 feet in depth. Soil depths from 0 to 10 feet, residuum from 4 to 20 feet and the top of the bedrock from 10 to 25 feet from the surface were recorded.
Soils were collected and later geochemically analyzed for copper, lead, zinc and barium content by: (1) atomic absorption spectrophotometric method for Cu, Pb, and Zn, and by (2) x-ray fluorescence for the Ba content. Copper, lead and zinc anomalies do not entirely coincide in space but show a marked preference for the southern part. Two barium anomalies occur in the central and south-central parts.
Barite occurs as: (1) residual deposits, (2) bedded replacement, and (3) open-space filling. Residual barite comprises the largest group. Bedded replacement barite occurs in Burlington-Keokuk limestone.
Barite, galena, sphalerite, chalcopyrite, limonite, calcite, and chert are the minerals. The paragenetic sequence indicate galena deposited first, followed by pyrite and/or chalcopyrite, and later barite. Sphalerite was not observed. Limonite is an oxidation product"--Abstract, pages ii-iii.
Proctor, Paul Dean, 1918-1999
Hagni, Richard D.
Geosciences and Geological and Petroleum Engineering
M.S. in Geology
University of Missouri--Rolla
ix, 81 pages
© 1977 German Francisco, All rights reserved.
Thesis - Open Access
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Francisco, German, "Geology and the barite potential of the Raymond Widel Area, Cooper County, Missouri" (1977). Masters Theses. 3290.
Geologic Map of R. Widel Area, Blackwater, Cooper County, Missouri
Francisco_German_1977.tif (175324 kB)
Geochemical Map - Distribution of Copper (ppm) in Soil Samples
Francisco_German_1977_1.tif (173491 kB)
Geochemical Map - Distribution of Zinc (ppm) in Soil Samples
Francisco_German_1977_2.tif (175424 kB)
Geochemical Map - Distribution of Barrium (ppm) in Soil Samples
Francisco_German_1977_3.tif (175456 kB)
Geochemical Map - Total Heavy Metal Distribution (Pb, Zn, Cu) in Soil Samples
Francisco_German_1977_5.tif (174127 kB)
Geochemical Map - Distribution of Lead (ppm) in Soil Samples
Francisco_German_1977_7.tif (163190 kB)
Geologic Map of R. Widel Area, parts of Sections 23, 24, 25 and 26, T49N, R19W, Blackwater