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StefenL

10/20/13 8:58 PM

#38473 RE: Watts Watt #38467

Watts: You should have read this first.

"Zirconium has a concentration of about 130 mg/kg within the Earth's crust and about 0.026 µg/L in sea water.[13] It is not found in nature as a native metal, reflecting its intrinsic instability with respect to water. The principal commercial source of zirconium is the silicate mineral, zircon (ZrSiO4),[5] which is found primarily in Australia, Brazil, India, Russia, South Africa and the United States, as well as in smaller deposits around the world.[6] 80% of zircon mining occurs in Australia and South Africa.[5] Zircon resources exceed 60 million tonnes worldwide[14] and annual worldwide zirconium production is approximately 900,000 tonnes.[13] Zirconium also occurs in more than 140 other minerals, including the commercially useful ores baddeleyite and kosnarite.[15]" Source: Wickipedia

Stephen