Georges Deicha

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Georges Deicha

Georges A. Deicha (born May 29, 1917 in Moscow , † February 11, 2011 in Louveciennes ) was a French geologist , mineralogist and medalist of Russian descent.

Deicha was one of the three founders of COFFI (Commission on Ore-Forming Fluids in Inclusions) and was an honorary member of the German Mineralogical Society . In the middle of the 20th century he discovered the importance of liquid and gaseous inclusions in minerals.

Live and act

Georges Deicha was the son of an engineer and a writer. Georges Deicha came to France with his parents when he was seven. He received all of his education in France and is considered a French scientist. In 1945 he began his career at the newly founded CNRS. Deicha was the father of three children: Cyril, Igor and Sophie .

Research on gypsum formation in the Paris basin was the subject of his first dissertation (Doctorat de l'Université de Paris). He wrote his second doctoral thesis (Doctorat ès-Sciences) on liquid and gaseous inclusions.

In 1955 his book about gaps in crystals and their fluid inclusions was published . It was one of the first scientific works on the subject.

He developed the method of crushing experiments and had Nachet build the first crushing table.

As a field geologist, he collected his rock samples himself as often as possible. Most of the time, he conducted research in the Alpine mountains of France, Italy, Liechtenstein, Switzerland and Austria.

In 1960 at the International Geological Congress in Copenhagen he met Edwin Woods Roedder and Nikolaj P. Ermakoff, who had discovered the importance of the inclusions around the same time, but independently of one another. The three of them succeeded in overcoming the mistrust prevailing at the time: The evaluation of liquids and gases in crystals was considered dubious , especially in the USA . In the literature his research got the name "Deicha's method".

Artistic work

Georges Deicha was also a portraitist and medalist. Bronze medals with images of scientists such as Léon Bertrand , Ami Boué , Louis Barrabé and Raymond Furon, which were given away to honorable geologists by the French Geological Society, are known. Some of these sculptures by Georges Deicha illustrate the website of the Société Géologique de France.

Honors

Together with Karl Hugo Strunz , he was elected honorary member of the German Mineralogical Society in 1982 . At the ERCOFI (European Current Research On Fluid Inclusions) congress in 2017, Georges Deicha's work was internationally recognized.

Individual evidence

  1. ↑ Cyril Deicha: À la mémoire de Georges Deicha (1917 - 2011). Retrieved July 20, 2017 .
  2. ↑ Georges Deicha: Les lacunes des cristaux et leurs inclusions fluides . Masson, Paris 1955, p. 126 .
  3. ^ Edwin Roedder: Application of an Improved Crushing Microscope Stage to Studies of the Gases in Fluid Inclusions . In: Swiss mineralogical and petrographic messages . tape 50 , no. 1 , 1970, p. 41–58 ( vt.edu [PDF; 6.3 MB ; accessed on August 5, 2017]).
  4. ^ Robert J. Bodnar: Edwin Woods Roedder July 30, 1919 – August 1, 2006 . In: Chemical Geology . tape 237 , no. 3–4 , March 2007, pp. 236–239 , doi : 10.1016 / j.chemgeo.2006.10.018 ( sciencedirect.com [PDF; 600 kB ; accessed on August 6, 2017]).
  5. ↑ http://megapaskal.ru/termometriya/618-metodika-dejsha.html
  6. ↑ Prix Louis Barrabé. Retrieved July 20, 2017 (French).
  7. ↑ Report ECROFI 2017 BIENNIAL MEETING , PDF doc. Page 24, English; accessed: August 5, 2017
personal data
SURNAME Deicha, Georges
ALTERNATIVE NAMES Deicha, Georges A.
BRIEF DESCRIPTION French geologist, mineralogist and medalist
DATE OF BIRTH May 29, 1917
PLACE OF BIRTH Moscow
DATE OF DEATH February 11, 2011
Place of death Louveciennes