Browsing Bulletins - Indiana Geol. Survey by Subject "Mineral Resources"

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  • Harrison, Jack L.; Murray, Haydn (Indiana Geological Survey, 1964)
    Modern concepts of clays as assemblages of discrete minerals form the basis for the first reevaluation of the clays and shales of Indiana since 1933. Brief explanations of the fundamentals of clay mineralogy and the major ...
  • Guennel, Gottfried K. (Indiana Geological Survey, 1958)
    Ninety-eight samples were collected for this study at 85 localities in 12 Indiana Counties. Percentage relationships of miospore genera and relative abundances of species were determined for these samples and can be used ...

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