Teach the Earth > Mineralogy > Teaching Activities > Mineral Stoichiometry

Mineral Stoichiometry

Joseph Smyth
University of Colorado at Boulder
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This activity was selected for the On the Cutting Edge Reviewed Teaching Collection

This activity has received positive reviews in a peer review process involving five review categories. The five categories included in the process are

  • Scientific Accuracy
  • Alignment of Learning Goals, Activities, and Assessments
  • Pedagogic Effectiveness
  • Robustness (usability and dependability of all components)
  • Completeness of the ActivitySheet web page

For more information about the peer review process itself, please see http://serc.carleton.edu/NAGTWorkshops/review.html.

This page first made public: Jul 8, 2009


Students are given mineral chemical analyses, from which students must determine cation formulae and mole ratios.

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This problem set is designed for an undergraduate course in mineralogy for majors.

Skills and concepts that students must have mastered

Students should have an understanding of introductory chemistry, including stoichiometry.

How the activity is situated in the course

This is a stand-alone exercise used as a homework assignment.


Content/concepts goals for this activity

This activity is designed to improve students' ability to calculate mineral formulae and stoichiometry.

Higher order thinking skills goals for this activity

Other skills goals for this activity

Description of the activity/assignment

In this problem set, students must determine the mineral formulas based on weight percent of constituents. They must provide the correct stoichiometry and molar ratios to three decimal places.

Determining whether students have met the goals

Students have successfully met the goals of the assignment if they answer the problem set thoroughly and accurately.

More information about assessment tools and techniques.

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Other Materials

Supporting references/URLs

This problem set is the 4th of 10 homework assignments used in a Mineralogy course.
You can also access the course syllabus which includes lecture Powerpoints, practice exams, and links to the other problem sets used in this course.

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