Combined X-ray maps of the polished surface of the sample studied which indicates the Ca-Si-Al chemical compositional variation. (IMAGE)

Proceedings of the National Academy of Sciences

Combined X-ray maps of the polished surface of the sample studied which indicates the Ca-Si-Al chemical compositional variation.

Caption

Combined X-ray maps of the polished surface of the sample studied which indicates the Ca-Si-Al chemical compositional variation.

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Image credit: Luca Bindi and Paul J. Steinhardt.

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