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This site provides a detailed look at the crystal structure and compositional variations of amphiboles. Also discussed are ways to assess the quality of analyses from looking at the stoichiometry of mineral formulas, how to estimate ferric iron, and special considerations affecting formula recalculation. A 3-D model of the mineral's structure is also included.
Intended for grade levels:
  • College (13-14)
  • College (15-16)
Type of resource:
  • Visual:
    • Illustration - scientific
  • Text:
    • Ref. material
  • Geological Sciences:
    • Geochemistry
    • Mineralogy or petrology
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
This Website and its contents are the property of The University of Oxford. The copyright in the material contained on this Website belongs to the University or its licensors.
DLESE Catalog ID: SERC-NAGT-000-000-000-724
Related resources:
This resource is part of 'Chemical Mineralogy of Common Mineral Groups'
Resource contact / Creator / Publisher:
Author: Prof Dave Waters
Department of Earth Sciences, University of Oxford