The Weisseck Mountain area has long been famous for fine fluorite specimens. The first volume of Viktor von Zepharovich’s Mineralogisches Lexicon für das Kaiserthum Österreich (“Mineralogical Lexicon of the Austrian Empire”) (1859; covering the years 1790–1857) mentions pale blue to violet-blue fluorite cubes from Weisseck. Ludwig Ritter von Köchel’s Die Mineralien des Herzogthumes Salzburgs (“The Minerals of the Dukedom of Salzburg”) (1859) also mentions fluorite discoveries at Weisseck Mountain. The mineral collections of the House of Nature museum in Salzburg and the Museum of Natural History in Vienna contain documented crystals from the classic finds of the 19th century. Provenance questions existed even in those early days, as von Köchel regarded certain specimens labeled “Konigstuhlhorn, Rauris” as more likely being from Weisseck, indicating his depth of knowledge concerning the morphology of the area’s specimens. Since those early explorations, additional cavities in the hard limestone and dolomite marbles of the area continued to be discovered. In the 1980s, a group of Viennese collectors discovered a fluorite pocket near Lake Rieding on the northwest flank of Weisseck Mountain, 600 meters below the summit. The fluorite they recovered is in the form of green and violet cubes, most with matte luster and measuring 2 to 3 cm on edge, intergrown and as individual crystals on a limestone matrix. A few exceptional specimens showing crystals to 5 cm with bright luster were also recovered, along with some fluorite of an unusual aquamarine color.