Global Economic Prospects - Forecasts. Global Economic Prospects examines trends for the world economy and how they affect developing countries. The report includes country-specific three-year forecasts for major macroeconomic indicators, including commodity and financial markets. Global Economic Prospects.
Sources of tin. Tin is relatively rare, making up only about 2 parts per million of the Earth's crust, according to the U.S. Geologic Survey. Tin is extracted from various ores, chiefly from Cassiterite (SnO 2). The metal is produced from reducing the oxide ore with coal in a furnace.Very little tin has been found in the United States, much of it in Alaska and California. According to Los Alamos National Laboratory, the metal is mainly produced in Malaya, Bolivia, Indonesia, Zaire, Thailand and Nigeria.ery little tin has been found in the United States, much of it in Alaska and California. According to Los Alamos National Laboratory, the metal is mainly produced in Malaya, Bolivia, Indonesia, Zaire, Thailand and Nigeria.
They are not especially rare, but they tend to occur together in nature and are difficult to separate from one another. However, because of their geochemical properties, rare earth elements are typically dispersed and not often found concentrated as rare earth minerals in economically exploitable ore deposits. The first such mineral discovered was gadolinite, a mineral composed of cerium, yttrium, iron, silicon and other elements. This mineral was extracted from a mine in the village of Ytterby in Sweden; four of the rare earth elements bear names derived from this single location.