Minerals from the collections of the Freiberg Mining Academy - Germany / German Democratic Republic 1969 - 5 Pfennig

Beautiful minerals of the GDR The Ministry of Posts and Telecommunications of the GDR publishes a series with six multicolored special postage stamps on which beautiful minerals from the German Democratic Republic are depicted. Minerals of the GDR Many types and varieties of minerals have been described in the scientific literature for the first time in the Ore Mountains, the Thuringian Forest and the Harz. A large number of minerals occur in the territory of the German Democratic Republic in excellent quality and special beauty. For these reasons, minerals of our homeland can be found in all the major collections in the world. As in recent years again and again interesting findings of minerals were discovered in the GDR, the issue of a stamp series with mineral motifs is of particular relevance. The minerals displayed on the stamps were all found on the territory of the GDR today. The steps are stored in the mineralogical collection of the Geosciences section of the Bergakademie Freiberg. 5 Pfennig Value: Erythrin (Cobalt Blossom) C03 (AsO4) 2 - 8H2O from Schneeberg, Erzgebirge (# 43841) Erythrin is a relatively rare mineral that forms on the surface of deposits rich in cobalt sulphides and arsenides , Mostly it occurs in earthy or spherical forms. The usually small crystals are needle-shaped, tufted or radiant. Extremely typical is the dark red-violet color, which also gave the mineral the name (Erythros, Greek = red). The piece shown on the stamp has a size of approx. 60 x 40 mm. The crystal needles of erythrin have a length of up to 15 mm and are grown on quartz. The illustrated minerals give a little insight into the richness and beauty of the mineral deposits of the GDR. The exhibitions of the mineralogical collections at the Bergakademie in Freiberg (Saxony) and the Humboldt University in Berlin provide a much broader overview of this area of ​​nature.