Ancient pigments, modern mystery Photos: Andy Freeberg, SLAC True purple is one of the rarest

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Date: 2014-09-12 10:46:05 Shades of blue Pigments Silicates Shades of violet United States Department of Energy National Laboratories Han purple and Han blue SLAC National Accelerator Laboratory Egyptian blue Purple Chemistry Physics Matter		Ancient pigments, modern mystery Photos: Andy Freeberg, SLAC True purple is one of the rarest Add to Reading List Source URL: www.symmetrymagazine.org Download Document from Source Website File Size: 983,33 KB Share Document on Facebook

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