Missouri lead belt

Alaska, Washington, and Nevada. Ores of the Southeast Missouri lead belt and extensive deposits such as in Silesia and Morocco are of the replacement type. These deposits formed when an aqueous solution of the minerals, under the influence of changing temperature and pressure, deposited the sulfides in susceptible sedimentary rock, usually limestone and dolomites. These ore bodies usually contain galena, sphalerite, and pyrite minerals, but seldom contain gold, silver, copper, antimony, or bismuth. 

Goldhaber M. B., Church S. E., Doe B. R., Aleinikoff J. N., Brannon J. C., PodosekF. A., MosierE.L., Taylor C. D., and Gent C. A. (1995) Lead and sulfur isotope investigation of Paleozoic sedimentary rocks from the southern Midcontinent of the United States implications for paleohydrology and ore genesis of the Southeast Missouri lead belts. Econ. Geol. 90(7), 1875-1910. 

The discussion is divided into two parts (1) the Ozark region which includes the Tri-State district, Southeast Missouri lead belts, Northern Arkansas district, Central Missouri district and (2) the east-central region which includes the niinois-Kentucky fluorspar district, Upper Mississippi Valley Zn, Pb District, and central Tennessee Zn district. The reason for making this distinction is that the Ozark and east-central regions are differentiated on the basis of Pb isotope systematics (Goldhaber et al., 1995) and ore paragenesis (Hayes et al., 1997). These distinctions imply distinct or largely distinct fluid flow paths. 

Stationary point source and nonpoint source inputs to environmental compartments in the coming years will also decline as part of regulatory requirements or simply the size of the remaining lead emission generators in coming years versus their historical impact. For example, only one major primary lead smelter remains in the United States, the facility in Herculaneum, MO. In 1985, there were five major primary lead smelters and refineries (ILZRO, 1982) East Helena, MT Omaha, NE and three in the Missouri Lead Belt. 

A substantial source of dispersion of trace elements in some rural areas arises from the transport by road of metallic ores from mines and mills to the smelting sites. Hemphill et al. [240] have compared the lead content of soils and vegetation in the Missouri Lead Belt along highways used for the truck transport of lead ore (essentially PbS) with control routes with comparable rates of traffic. Greatly elevated levels of lead were found along the ore routes up to a distance of about 100 yards. 

At the other extreme are the clean, high grade concentrates, containing perhaps 70-80 per cent lead and relatively few impurities. Material from the Missouri lead belt (including the SE Missouri and Sweetwater mines) and from the Canadian Arctic (the Polaris mine, for example) would fit into this category. Moroccan concentrates are of particularly high purity and often attract a premium over other clean material. 

Dollard, G.J. 1986. Glasshouse experiments on the uptake of foliar applied lead. Environ. Pollut. 40A 109-119. Dom, C.R., P.E. Phillips, J.O. Pierce, and G.R. Chase. 1974. Cadmium, copper, lead and zinc in bovine hair in the lead belt of Missouri. Bull. Environ. Contam. Toxicol. 11 626-630. 

Overmann, S.R. and J.J. Krajicek. 1995. Snapping turtles (Chelydra serpentina) as biomonitors of lead contamination of the Big River in Missouri s old lead belt. Environ. Toxicol. Chem. 14 689-695. Osweiler, G.D. and G.A. Van Gelder. 1978. Epidemiology of lead poisoning in animals. Pages 143-177 in F.W. Oehme (ed.). Toxicity of Heavy Metals in the Environment. Part 1. Marcel Dekker, NY. 

Rickman, D. L., 1981, A thermochemical study ofthe ore deposits ofthe Milliken Mine, New Lead Belt, Missouri Ph.D. Dissertation University ofMissouii, Rolla, Rolla, MO, United States, 336 p. 

The United States produces about 25% of the world s sorghum grain. The U.S. sorghum belt is the Southern Great Plains. The ten leading states, by rank, are Kansas, Texas, Nebraska, Missouri, Arkansas, Oklahoma, Illinois, South Dakota, Colorado, and Louisiana. Kansas and Texas account for 56% of the nation s production. 

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