Tin is used for production of a wide variety of useful alloys, being most commonly alloyed with copper. Tin is also used for coating steel and other metals to prevent corrosion. Tin-plated steel cans and containers are widely used for food preservation but that application decreases due to growing replacement of tin with other materials.
Tin is mainly extracted from its basic compound, usually cassiterite (SnO2), occurring in the form of primary or secondary accumulations.
In Poland, tin ores occur in two deposits, Gierczyn and Krobica, in the Stara Kamienica Lower Paleozoic Schist Belt in the Sudety Mts. Tin resources of these deposits were classified as anticipated subeconomic and were estimated at 4.6 million tonnes of ore with Sn content about 0.5% at the average (table 1). Perspective resources of tin ore in the whole area of the Stara Kamienica Schist Belt were estimated at about 20 million tonnes, with the content of metallic tin of about 100,000 tonnes.
Prepared by: Stanisław Z. Mikulski