Déodat Gratet de Dolomieu
French geologist
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Dieudonné Sylvain Guy Tancrède de Gratet de Dolomieu usually known as Déodat de Dolomieu was a French geologist. The mineral and the rock dolomite and the largest summital crater on the Piton de la Fournaise volcano were named after him. Wikipedia
Born: June 23, 1750, Dolomieu, France
Died: November 28, 1801 (age 51 years), Châteauneuf, France
Education: École des Mines de Paris
Known for: First description of the rock named dolomie (or dolomite)