class [petrology] . In the CIPW classification of igneous rocks, a subdivision based on the relative proportions of salic and femic standard minerals. The classes correspond approximately to the... more
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The Harriet Evelyn Wallace Scholarship is now taking applications. Women pursuing Master's or Doctoral degrees in Geoscience programs are eligible to apply by January 4th, 2017.
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The latest edition of AGI's comprehensive report on the state of the geoscience workforce and related economics.
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Invitation to a national policy dialogue on major geoscience policy topics.
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