The infrared spectra of birefringent garnets from Asbestos, Quebec, Canada, show strong anisotropy in the OH stretching region, but are devoid of anisotropy in the Fe2+ electronic bands and in the SiO4 overtone region. These results suggest that the birefringence arises from a noncubic orientation of the OH groups that are from a minor hydrogrossular component.

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First page of Spectroscopy of a birefringent grossular from Asbestos, Quebec, Canada
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