Valorization, digitization and visualization of the Clemens Winkler collection of inorganic-chemical preparations at the TU Bergakademie Freiberg

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The aim of this project is the indexing and digitization of the Clemens-Winkler collection of inorganic-chemical preparations at the TU Bergakademie Freiberg. With its 1400 objects, it is a nearly completely preserved university collection and the most extensive and significant scientific collection of inorganic-chemical preparations. The specimens were carefully conserved in sealed ampoules or in glass vessels with stoppers. Metal bars and workpieces are kept in boxes. The collection was founded by Clemens Alexander Winkler (1838 – 1904) during his activities as a teacher and researcher at the Bergakademie Freiberg. At the time, he was one of the leading inorganic, analytic, and technical chemist. For example, Winkler found the element germanium, which was predicted by Mendelejew in the course of his initial postulation of the periodic table. The original sample of the mineral argyrodite and the obtained germanium sulfide, which was used by Winkler to determine atomic weight of germanium, are part of the collection. The preparations in the collection Winkler were used to document his most important research results and as objects for illustration in his teaching. During the project, the Winkler collection will be indexed and digitized. For this purpose, a suitable recording standard is developed. All collection items are recorded with all relevant metadata. Existing documents are digitized and photos of all objects are made. In addition, the increase in security standards for storing the objects is planned. Finally, with the conclusion of the project, the Winkler collection should be made accessible for further fields of research and to a broad group of users as a unique collection of inorganic-chemical specimens and be internationally accessible in digital form.