“…We report the discovery of a dodecagonal quasicrystal Mn(72.3)Si(15.6)Cr(9.7)Al(1.8)Ni(0.6)—composed of a periodic stacking of atomic planes with quasiperiodic translational order and 12-fold symmetry along the two directions perpendicular to the planes—accidentally formed by an electrical discharge event in an eolian dune in the Sand Hills near Hyannis, Nebraska, United States. The quasicrystal, coexisting with a cubic crystalline phase with composition Mn(68.9)Si(19.9)Ni(7.6)Cr(2.2)Al(1.4), was found in a fulgurite consisting predominantly of fused and melted sand along with traces of melted conductor metal from a nearby downed power line. …”
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