Hauzenberger graphite
Hauzenberger graphite is a graphite deposit near Hauzenberg , district Kropfmühl , in which carbon with a hexagonal lattice structure and a density of 2.25 has been mined for more than a century . It is the only graphite deposit in Germany , but not the same quality as Ceylon graphite .
The first graphite mines appeared at the beginning of the 18th century. Graphite was mined by landowners , so that in times of favorable sales the landowners made considerable wealth.
Originally, the extracted material was only processed around Passau , especially in Obernzell , as an additive to classic clay crucibles ("Hessian crucibles") and referred to and marketed as "Passau crucibles". The technique of adding graphite to the Hessian crucibles was soon adopted by the crucible manufacturers in Hesse ( Großalmerode district ), which had far greater capacities and clay deposits, and also by the crucible manufacturers in Neheim-Hüsten in North Rhine-Westphalia . Since then it has been considered the basic mixture of all clay-graphite crucibles, also made in England ( Morgan ) and the USA ( Vesuvius ).
Titanite was first discovered in the Hauzenberg graphite mines in 1795 . The location is therefore also considered to be its type locality . Other mineral finds at this site are feldspars , mica , hornblende , quartz and talc .
literature
- Ernst Brunhuber (founder): Foundry lexicon. 17th edition, completely revised and edited by Stephan Hasse. Schiele & Schön, Berlin 1997, ISBN 3-7949-0606-3 .
- Johannes Klein: Herder Lexicon. Geology and mineralogy. 5th edition. Herder, Freiburg (Breisgau) et al. 1979, ISBN 3-451-16452-3 .
Web links
- Titanite deposits in the graphite mines near Hauzenberg. In: Mineralienatlas Lexikon. Stefan Schorn u. a.
- Hauzenberg. In: Mineralienatlas Lexikon. Stefan Schorn u. a.