Talc is a mineral of high quality and from chemical point of view it is Mg3Si04010 /OH/2. It usually contains different additional minerals that signigicantly affect its color and most of all its quality. The quality is decreased by the existence of Fe3+, pyrite and oxide Mn. Talc is used mainly in the paper manufacturing, cosmetic industry, glass industry, as a chemical catalyzator, ingredient in making explosives, in pharmaceutics and car industry.Some of the biggest producers of talc are: China - 2.35 mills tons/year, the USA - 1.0 mills tons/year, India - 500.00 kt/year, Finland - 425 kt/year, and Brazil with 325 kt/year. The most important deposits are located in: Finland (Sotkano deposit), in the USA (deposits in the state of New York, Virginia and Vermont) in Canada (province of Ontariou), Australia (Three Springs deposit) etc.Among one of the first companies being interested in this deposit of talc (along with the Rima Muran Ltd) were companies from Germany Gebruder Dorfner and Thyssen Schachtbau. The result of the detailed research of the deposit performed in 1994 was a Feasibility Study. This deposit with 28 milions tons of talc belongs to the group of most important deposits in the world.Initial acivities began in September 2000 and they are still in progress.The first ton will be placed into themarket during this year. The deposit lies about 350 meters beneath the earth surface. The whole body of talc is 2700 meters from West-East and 820 meters from North-South. The average depth of the deposit is 200 meters.
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Technical University of Kosice, the Faculty of Mining, Ecolo
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