Depreciation

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Under Absätzigkeit refers to the erratic distribution of mineralization in an ore or other mined interesting minerals .

Highly sedentary deposits are difficult to develop and the ores are difficult to smelt . Depreciation is therefore one of the classic deficiencies and inadequacies of a deposit in prospecting and exploration .

In an outdated meaning, the word can be found more generally as '(unfavorable) rock change', in particular to solid rock ( mountain forts ), or deaf rock , but also more generally as an adjective for a paragraph in relation to a change of direction, a hanging / lying change, crevices and other disorders of the gangs .

Individual evidence

  1. Definition according to the environmental impact assessment procedure and partially concentrated approval procedure for the Semmering Base Tunnel, Continued procedure: Amendment of the environmental impact assessment , BMVIT, March 2014, SoA
  2. "A [...] place whose quality suffers from a change; if z. B. shows a mountain fortress in a supple stone ”; Heinrich August Pierer: Universal encyclopedia of the past and present or the latest encylopedic dictionary of the sciences, arts and trades. Volume 1 (Altenburg, 1857), 1st edition p. 51 ( Viewer, Digitale-bibliothek-mv.de ; 2nd edition p. 56, Google, full view ).
  3. a b “In paragraphs, a corridor is called when in the pit under the soft rock, mountain fortresses, i. i. solid rock occurs "; Paragraph and paragraph 2) In: Johann Samuel Schröter: Mineralogical and Mining Dictionary , Volume 1, 1789, p. 17 ( digitized, Google, complete view ).
  4. a b “When the ore means alternate with the deaf means more often after the strike as well as the fall of the Ganges; so one also says: the gait is offset ”; Paragraph. In: Carl-Friedrich-Alexander Hartmann: Concise dictionary of mineralogy, mining, metallurgy and salt works, together with the French synonymy. Volume 1, Verlag Voigt, 1825, p. 10 f ( digitized version, Google, complete view ).