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Dumortierite, Quartz


Dumortierite : (Al,Fe3+)7[O3|BO3|(SiO4)3], Quartz : SiO2

Photo Copyright © California Institute of Technology  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Dehesa, Alpine, San Diego Co., California, USA
Radiating mass of dark pink dumortierite in colorless quartz. Identification confirmed by X-ray and electron microprobe analysis.

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