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Diederik Visser (1963) studied Geology at the University of Utrecht, The Netherlands. In 1993 he received his PhD degree in Utrecht with a thesis on cordierite-orthoamphibole rocks and the Metamorphic evolution of the Bamble Sector, a piece of deep continental Proterozoic crust in south Norway. 

After several years of employment for the Government, Diederik returned to geology and his love for the academic geological collections as part-time curator of the geological collections at The University Museum in Utrecht and as Projectmanager of a large National project on the abandoned academic geological collections. 

In 2003 Diederik started his own business Diederik Visser Minerals & Petrological Services combining his interest in rare Minerals, his background in Petrology and his peculair habit of collecting mining related objects. Diederik lives together with his cats "Flippie" and "Muis (=Mouse, what a name for a cat)"  in the  city of Deventer. 

 

Behind the microscope, september 2005

 

Visiting several old mining sites in the OstHarz, Germany, September 2003

Very rare photograph of a bearded Diederik (a real collectors item !!). Only had a Beard for one year.
This one is from August 2002 when working on a project
involving the geological collections of the University of Amsterdam

 

Some personal links:

The Dumortierite Bibliography

Publications of Diederik Visser

Results of a museum project coordinated by yours truly, involving the academic geological collections in The Netherlands - The ‘Dutch approach’, or how to achieve a second life for abandoned geological collections

 

Some Photographs

Rainbow looking to the north, March 28th 2006