Johann Georg Lenz

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Johann Georg Lenz (born April 2, 1748 in Schleusingen , † February 28, 1832 in Jena ) was a German mineralogist , Bergrat and professor of mineralogy at the University of Jena .

Lenz came from a modest background and from 1765 studied theology in Jena. In 1770 he received his doctorate there in philosophy and became a private lecturer in Jena. Inspired by the mineralogical system of Abraham Gottlob Werner , he turned to mineralogy and began to publish extensively as a follower of the Werner school. He administered the collection of Johann Ernst Immanuel Walch at the university and became ducal inspector. In 1785 he became mining secretary, in 1788 an adjunct of the philosophical faculty in Jena, in 1794 as an associate professor and in 1810 as a full professor. In 1803 he became a mountain ridge.

Johann Georg Lenz first used the term goethite in 1806 for the mineral named after Johann Wolfgang von Goethe . The name was given through the mediation of Ludwig Wilhelm Cramer at the suggestion of the pastor Heinrich Adolf Achenbach (1765-1819) and the miner Johann Daniel Engels (1761-1828), both from Siegen, who suggested the name Goethenite for the mineral. Friedrich Wilhelm Riemer caused Johann Georg Lenz to change the name to Goethite.

Lenz was the founder of the "Mineralogical Society" in Jena and edited their annals with Johann Friedrich Heinrich Schwabe (1779-1834) (six volumes from 1802 to 1811 and two volumes of the Societät's new writings in 1823, 1825).

From 1829 to 1830 he traveled to the Inner Caucasus and the Elbrus region as a scientific companion on General Imanuel's expedition together with Adolph Theodor Kupffer and Édouard Ménétries .

On July 14, 1804 he was elected member ( matriculation no. 1029 ) of the Leopoldina with the surname Archagatus II . Since 1818 he was a foreign member of the Bavarian Academy of Sciences .

Fonts

  • Tables about the fossils for the first lesson, by Joh. Rudolph Croeckers seel. Wittwe, Jena 1780 Google Books
  • Table of the entire stone kingdom 1781
  • The beginnings of animal history for the use of academic lectures, see Joh. Rudolph Cröckers seel. Wittwe, Jena 1783 Google Books
  • Treatise on Basalt 1789
  • Outline of the mineralogy according to the newest Werner system, for use in lectures at academies and schools, by Johann Gottfried Hanisch, Hildburghausen 1793 Google Books
  • Attempt at a complete introduction to the knowledge of minerals, first part types of earth and stone, salts, oily mineral bodies and fossils, in Siegfried Lebrecht Crusius, Leipzig 1794 Google Books
  • An attempt at a complete introduction to the knowledge of minerals, second parts, metals and mountain types, by Siegfried Lebrecht Crusius, Leipzig 1794 Bavarica
  • Mineralogical Handbook 1796
  • System of external characteristics of minerals 1801
  • Tables covering the entire mineral kingdom 1806
  • Epistemology of Inorganic Natural Bodies, 4 volumes, 1813
  • Complete manual of mineralogy, 6 volumes, 1819 to 1820

Web links

personal data
SURNAME Lenz, Johann Georg
ALTERNATIVE NAMES Archagatus II.
BRIEF DESCRIPTION German mineralogist
DATE OF BIRTH April 2, 1748
PLACE OF BIRTH Schleusingen
DATE OF DEATH February 28, 1832
Place of death Jena