#Calcite, a #crystal form of #CalciumCarbonate (#CaCO3), that has a fascinating way of distorting and refracting the light that passes through it, such as the color patterns in this “nailhead spar” piece of calcite.
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#RocksOfMastodon, #Minerology, #Geology, #OpticCalcite, #NailHeadSpar, #Macro #Photograph, #MacroPhotography