stillwellite

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• List of minerals S-T (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

• Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare …   Wikipedia

• Rare-earth mineral — A rare earth mineral is a mineral whose principal element is a rare earth element. Yttrium is found in almost all rare earth minerals. Rare earth minerals are usually found in association with alkaline to per alkaline igneous complexes, in… …   Wikipedia

• Mining in Tajikistan — Mine near Darwaz, Tajikistan. Tajikistan has rich deposits of gold, silver, and antimony. The largest silver deposits are in Sughd Province, where Tajikistan’s largest gold mining operation also is located. Russia’s Norilsk nickel company has… …   Wikipedia