Silly or Unusual Names: which is a flotation agent used in the mining industry. It is a form of aluminium silicate, with no real value, except in Idaho, where the Clearwater River Valley has sillimanite cobbles that are carved into figurines and sold as souvenirs of Idaho. Thanks to Hope Nesmith for suggesting this mineral. Flotation tests of Idaho ores (9785519322270) C. A. Wright; J. G. Parmelee; J. T. This book was created using print-on-demand technology. Causes of International War (Classic Reprint) von G. Lowes Dickinson - Englische B