Ore grade

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As Erzstufe even Erzstuffe is called one of a deposit out hewn piece of ore . Ore stages consist partly or entirely of ore.

species

According to the appearance and composition, the miner differentiates between trial and hand grades .

A trial stage is a piece of ore that was knocked out of the vein so that the metal content could be checked by a trade tester using the art of trial and error . This checking of the ore content on the basis of a trial stage was prescribed in early mining and had to be carried out at least once a quarter, especially with silver ores. If the so-called cracks changed, the check had to be carried out more often. This made it possible to see whether the ore content of the deposit was improving.

Particularly beautiful pieces of ore that were not melted down, but kept in mineral cabinets and used for showing when required, were referred to as handstuff or handpiece . The hand steps were obtained by the miners working on the larger ore chunks after the blasting work and cutting off small pieces in layers. Hand steps were often called show step because these ore steps were displayed and presented to the trades as a rich and beautiful opening. They were often used to appraise the respective ore mine and were not used for merging, but instead put on display again if necessary.

literature

Individual evidence

  1. ↑ Explanatory dictionary of the technical terms and foreign words that occur in mining in metallurgy and in salt works and technical articulations that occur in salt works. Falkenberg'schen Buchhandlung publishing house, Burgsteinfurt 1869.
  2. ↑ Swen Rinmann: General mining dictionary . Zweyter Theil, Fr. Chr. W. Vogel, Leipzig 1808.
  3. ↑ a b c Johann Gottfried Jugel (Ed.): Geometria Subterranea. New improved edition, bookseller Johann Paul Kraus, Vienna 1773.
  4. ^ A b Heinrich Veith: German mountain dictionary with evidence. Published by Wilhelm Gottlieb Korn, Breslau 1871.
  5. ^ A b c Johann Christoph Stößel, Johann David Stößel: New and well-established mineral and mining lexicon. Minerophilo Freibergensis, Chemnitz 1743.
  6. ↑ Carl von Scheuchenstuel: IDIOTICON the Austrian mining and metallurgy language. kk court bookseller Wilhelm Braumüller, Vienna 1856.
  7. ^ Wilhelm Hoffmann: Complete dictionary of the German language. Fourth volume, Verlag der Dürr'schen Buchhandlung, Leipzig 1857.