Mineral Formulas by Melinda Darby Dyar, Mickey E. Gunter & Dennis Tasa

Mineral Formulas

By Melinda Darby Dyar, Mickey E. Gunter & Dennis Tasa

  • Release Date: 2014-03-03
  • Genre: Earth Sciences
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Description

The chemical composition of a mineral is obtained using many different analytical techniques. Each of these provide data in different units that is converted into a standard format for chemical formulas using "atoms per formula unit." The calculations required must consider the effects of oxides, iron and hydrogen. Finally, the chemical composition of minerals can be represented graphically using a ternary plot or 3-D structural models.
Topics covered in Chapter 10 include:
• Mineral Formula Calculation
• Formula Recalculations Based on Oxides
• The Trouble with Iron
• What about Hydrogen?
• Graphical Depictions of Mineral Chemistry
• Compositional Variation in Minerals
• Assigning Cations to Structural Sites
• "Grammar" Rules for Mineral Formula

This Mineralogy and Optical Mineralogy Series is specifically designed to take full advantage of digital media technology to empower students and teachers of mineralogy. Using color photographs, illustrations, movies, 3D models that can be rotated, interactive diagrams, and review questions, this series makes a challenging subject approachable. Also, each chapter in the series is available separately allowing the reader to pick and choose only those chapters they need for their specific course.

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