Karl Jasmund
Karl Jasmund (born January 19, 1913 in Hagenow ; † November 4, 2003 in Cologne ) was a German mineralogist who is considered one of the pioneers of clay mineralogy in Germany.
Jasmund was the son of a businessman and from 1931 studied chemistry, physics and mathematics at the University of Rostock and initially wanted to become a teacher. After the teacher state examination in 1937, he studied mineralogy in Rostock (as well as in Vienna, Marburg and Hamburg) and in 1939 at Carl Wilhelm Correns in Rostock (PhD About the mineral composition of some kaolins with special emphasis on colloidal orders of magnitude ) than kaolins a deposit in Ronne on Bornholm . He followed Correns to Göttingen, and Correns also brought him to Göttingen in 1943 from his military service as a lieutenant in the field artillery on the Eastern Front for war-related work (oil, materials for jet engines, synthesis of piezoelectric minerals and mica). In 1952 he completed his habilitation in Göttingen and in 1956 he became professor of mineralogy and petrography at the University of Cologne . He rebuilt the institute, set up a publicly accessible mineralogical museum and was dean of the faculty from 1965 to 1967. In 1980 he retired, but remained scientifically active.
Work areas
He was particularly concerned with the mineralogy of clay minerals, being a pioneer in the application of X-ray diffraction techniques to clays. For this purpose he developed a special camera (Jasmund camera), which considerably accelerated the identification of the minerals in a clay sample. He later studied the colloidal properties of clays. He also dealt with crystallization from subcritical and supercritical solutions and the phase relationships of silicates at high pressures and temperatures and set up a corresponding laboratory in Cologne. He and his students also examined the volcanic rocks in the wider area around Cologne (Eifel, Westerwald, Siebengebirge) and the sandstones of Cologne Cathedral and their weathering. Most recently, as emeritus, he dealt with the allophanes .
Honors
- From 1969 to 1973 he was chairman of the clay minerals working group, from which the German clay and clay mineral group (DTTG) emerged in 1972.
- In 1981 he became an honorary member of the German Soil Science Society .
- The University of Cologne honored him in 1983 on the occasion of his 70th birthday with a celebratory colloquium.
- In 1983 he received the Abraham-Gottlob-Werner Medal of the German Mineralogical Society at the celebratory colloquium .
- In 1969 the mineral jasmundite was named after him.
- The Karl Jasmund Prize of the DTTG, which has been awarded since 1989, is named after him.
Fonts
- Editor with Gerhard Lagaly : Clay minerals and clays, structure, properties, applications and use in industry and the environment , Darmstadt, Steinkopff 1993
- The silicate clay minerals , Verlag Chemie, Weinheim 1951
Web links
Individual evidence
| personal data | |
|---|---|
| SURNAME | Jasmund, Karl |
| BRIEF DESCRIPTION | German mineralogist |
| DATE OF BIRTH | January 19, 1913 |
| PLACE OF BIRTH | Hagenow |
| DATE OF DEATH | November 4, 2003 |
| Place of death | Cologne |