|  | Kimberlites, 
      Orangeites, Lamproites, Melilitites, and Minettes: A PETROGRAPHIC ATLAS by Roger MitchellThis 
        volume, a comprehensive guide to the petrography of diamond-bearing and 
        related rocks, is an essential reference for geologists involved with 
        exploration for diamonds, and is invaluable for all petrologists interested 
        in alkaline igneous rock petrography.
  
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    |  | PEROVSKITES:Modern 
      and Ancient  by Roger Mitchell This volume is intended as an introduction for the neophyte to 
        the structure and compositional variation found in perovskite-group and 
        related compounds, will be of interest to solid state chemists, materials 
        scientists, crystallographers, and mineralogists.
  
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