Reference Entry

Troost, Gerard

James X. Corgan

in American National Biography Online

Published in print January 1999 |
Published online February 2000 | e-ISBN: 9780198606697 | DOI:

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Troost, Gerard (15 March 1776–14 August 1850), geologist and chemist, was born in Bois-le-Duc, Netherlands, the son of Everhard Joseph Troost and Anna Cornelia van Haeck. He became a medical doctor through apprenticeship in Leiden and a pharmacist through apprenticeship in Amsterdam, never enrolling in a Dutch college. In the early 1800s he practiced pharmacy in the Netherlands and became well known as a mineral collector. In June 1807 the king of the Netherlands, Louis Napoleon, appointed Troost to create a royal collection of minerals. To perfect his skills, Troost became a pupil of the father of crystallography, the Abbe René Just Haüy, who worked at the Natural History Museum in Paris, where Troost took up residence. For three years he studied and traveled, buying specimens for the royal collection. In early 1810, when the Dutch government was about to fall, Troost assembled letters of introduction from European intellectuals, gathered American mineral specimens that were in Paris for identification, and left for Philadelphia. The move was probably long planned since his younger brother, Benoist, arrived in Philadelphia from Java at the same time....

Reference Entry.  1363 words. 

Subjects: Medicinal Chemistry ; Geology and the Lithosphere

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