Abstract
IT has been generally accepted in the past that continuous solid solution existed in the epidote group between pure aluminium epidote, Ca2Al3Si3O12.OH (Cz), and common iron epidote1–3. Four important minerals occur in this range; in order of increasing iron content they are α-zoisite and β-zoisite (orthorhombic), clinozoisite and epidote (monoclinic). They are distinguished on the basis of their optical properties.
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References
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STRENS, R. Some Relationships between Members of the Epidote Group. Nature 198, 80–81 (1963). https://doi.org/10.1038/198080b0
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DOI: https://doi.org/10.1038/198080b0
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