Smoky #Quartz is a type of quartz (SiO2) that has been discolored due to either titanium or organic inclusions in the #crystal structure, or by the inclusion of radioactive elements that damaged the crystal structure during the process of radioactive decay.
This specimen is from the Great Smoky Mountains.
#SmokyQuartz, #Crystal, #BrownCrystal, #MacroPhotography, #MacoPhotograph, #Photography, #Photograph, #Photo
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