Browsing Circulars - Indiana Geol. Survey by Subject "Rocks"

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  • Smith, Ned M.; Brookley, Arthur C.; McGregor, Duncan J. (Indiana Geological Survey, 1954)
    Rocks, minerals, and fossils of Indiana are the foundation, directly or indirectly, of the economic well-being of the state. Utilization of rocks, minerals, and fossils has contributed to the development of civilization. ...
  • Greenberg, Seymour S.; Bundy, Wayne M.; McGregor, Duncan J. (Indiana Geological Survey, 1958)
    The study of minerals and rocks is an important part of the science of geology, which treats of the history of the earth and its life, especially as recorded in the rocks. Surprisingly many of us accept as commonplace many ...
  • Wayne, William J. (Indiana Geological Survey, 1958)
    Rocks are made up of a mixture of minerals. Therefore you need to know what minerals and how much of each mineral are in a rock before you can give that rock a name. This has been an obstacle for the student of nature ...

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