Rio Tinto minerals

Boron is present in the earth s crust at a level of only three parts per million, but there are areas where it is concentrated as borate salts (salts of the oxidized form of elemental boron) in substantial volumes for mining. The United States and Turkey supply 90% of the global borate demand. Rio Tinto Minerals (RTM)/U.S. Borax, the largest borate producer, operates an open pit mine and refinery complex in the Mojave desert of California. The principal minerals in the deposit are tincal and kernite (Table 9.1). 

Rio Tinto Minerals-Borax Service Bulletin, Borates in Cellulosic Materials, Denver, Colorado. 

Bruno Purnode, Owens Corning Composite Solutions, Granville, OH and Andrew Zamurs, Rio Tinto Minerals, Greenwood, CO... 

Rio Tinto Minerals is responsible for 25% of the world talc production and is the largest producer in North America with largest mine in Montana. Its total production increased from 1.26 million tons in 2000 to 1.33 million tons in 2002 following the acquisition of the Three Springs mine in Austraha [12]. Production for 2007 was around 1.28 million tons affected by the slow housing market [13]. Major talc suppliers and grades recommended for use in plastics are listed in Table 12.3. 

Rio Tinto Minerals America (made up of Luzenac , Borax and Dampier Salt)... 

Business Development Rio Tinto Minerals Toulouse, France... 

Rio Tinto Borax at Boron, California, is perhaps the single largest producer of borate chemicals in the world with a capacity of over 1.6 billion pounds per year. This company was formed from a merger of Luzenac (French) with Dampier (Australian) and US Borax (USA). Other borate-producing companies are American Borate (in Nevada) and Searles Valley Mineral (California). 

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