those in Nevada and Arkansas in the USA; Chaillac, France; and Andhra Pradesh, India. Because of apparently...oilwell drilling. France About 60% of the 200,000 tons/year of barite production in France is derived from...fluorite, lead, and zinc miner- alization in France and several other European countries are described...Berthoumieux, G., 1978, “The industrial minerals of France” in Proceedings, Third Industrial Minerals International...clayey impurities. Examples include deposits in France, Italy, Greece, Yugoslavia, and Hungary, as well |