Full text of Us Department Of The Interior Bureau Of Mines
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TiO2 Most common natural ore of titanium containing various impurities including iron up to 15 FeTiO3 Naturally occurring ore containing iron and titanium higher in iron than rutile when 25 or more iron is present iron Clays eg Redart Albany slip Alberta Slip Barnard Slip aka Blackbird Slip Michigan slip Lizella laterite