A #Macro #Photo of the surface of a piece of Smoky #Quartz.
Found in the Great Smoky Mounters of North Carolina and Tennessee, among many other places, is colored by having energetic particles displace atoms from the #crystal #lattice. The radiation source was likely natural, such as being close to deposits of granite, which contains uranium.

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#SmokyQuartz, #MacroPhotography, #Crystal, #BrownCrystal, #RocksOfMastodon, #Mineral, #Photograph