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- Déodat_Gratet_de_Dolomieu abstract "Dieudonné Sylvain Guy Tancrède de Gratet de Dolomieu usually known as Déodat de Dolomieu (23 June 1750 – 28 November 1801) 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.Déodat de Dolomieu was born in Dauphiné, France, one of 11 children of the Marquis De Dolomieu and his wife Marie-Françoise de Berénger. As a child young Déodat showed considerable intellectual potential and special interest in the natural surroundings of his home in the Alps of southeastern France. De Dolomieu began his military career in the Sovereign and Military Order of the Knights of Saint John (also called the Knights Hospitaller or the Knights of Malta) at the age of 12. His association with the Maltese Order caused him difficulties throughout his life, beginning with a duel, which he fought at the age of 18, when he killed a fellow member of the Order. For this infraction he was sentenced to life in prison but due to the intercession of Pope Clement XIII he was released after only 1 year.During the years prior to the French Revolution De Dolomieu took full part in the intellectual ferment of France and the rest of Europe. He maintained numerous social contacts among the nobility and although he never married, De Dolomieu had something of a reputation as a ladies' man. Through his friend and mentor, the Duke de La Rochefoucauld, De Dolomieu was made a corresponding member of the Royal Academy of Sciences. He spent his spare time taking scientific excursions throughout Europe collecting mineral specimens and visiting mining areas. His particular interests included mineralogy, volcanology, and the origin of mountain ranges. Although De Dolomieu was greatly interested in volcanoes, he became convinced that water played a major role in shaping the surface of the Earth through a series of prehistoric, catastrophic events. De Dolomieu was not a uniformitarian geologist. His contemporary, James Hutton, did not publish the principle of uniformitarianism until 1795. De Dolomieu was an observationalist and spent much of his time collecting and categorizing geological data. Unlike Hutton, no scientific principles or theories are credited to him, although he left his permanent mark on geology in another way: that is by discovering the mineral that would be named after him.During one of his voyages to the Alps of Tyrol (today part of northeastern Italy) De Dolomieu discovered a calcareous rock which, unlike limestone, did not effervesce with weak hydrochloric acid. He published these observations in 1791 in the well-known French science magazine "Journal de Physique". In March 1792, the rock was named dolomie (or dolomite, in English) by Nicolas-Théodore de Saussure. Today both the rock and its major mineral constituent bear the name of De Dolomieu, as do the Dolomites, the mountain range of northeastern Italy. De Dolomieu was not the first to describe the mineral dolomite. Most probably it was Linnaeus, who was the first to note the fact that this rock resembled limestone but does not effervesce with dilute acid. In his book "Oryctographia Carniola, oder physikalische Erdbeschreibung des Herzogthums Krain, Istrien und zum Theil der benachbarten Länder", published by J. G. I. Breitkopf, Leipzig in 1778, the Austrian naturalist Belsazar Hacquet also observed this distinction between limestone and a rock that Hacquet described as lapis suillus. The two men met in Laibach in 1784, when De Dolomieu visited Sigmund Zois. However, Hacquet was well aware of the fact that the description of a limestone that would not effervesce with acid (and therefore had to be different from normal limestone) by the famous Carolus Linnaeus in 1768 preceded his own. On p. 5 of the second volume of his "Oryctographia Carniola", which appeared in 1781, Hacquet stated that the white powder he had found near the town of Vorle ("unterm Teil der Oberkrain") a white powder that strongly resembled limestone but would not react with dilute hydrochloric acid, reminded him of the Marmor Tardum described by Linnaeus.In addition to his scientific activities De Dolomieu continued to advance in rank in the Knights of Malta and was promoted to Commander in 1780. However, he continued to have difficulties as a result of his liberal political leanings which were unpopular among the conservative nobility who controlled the Order. De Dolomieu retired from active military service in 1780 to devote all of his time to travels and scientific work.De Dolomieu was at first a strong partisan of the French Revolution, which began in 1789. However, the murder of his friend the Duc de la Rochefoucauld, a near-escape from the guillotine, and the beheading of several of his relatives, turned him against the revolution. During this time De Dolomieu became a supporter of Napoleon Bonaparte. In 1795, having lost his fortune in the revolution, De Dolomieu accepted the position of Professor of Natural Sciences at the École Centrale Paris and started to write the mineralogical section of the Encyclopédie Méthodique. The following year he was appointed Inspector of Mines and Professor at the École Nationale Supérieure des Mines de Paris, where his portrait still hangs in the library. His extensive mineral collection is today housed at the Muséum National d'Histoire Naturelle of Paris.By 1798 De Dolomieu had developed an international reputation as one of the leading geologists in the world and was invited to join the scientific expedition accompanying Bonaparte's invasion of Egypt, as part of the natural history and physics section of the Institut d'Égypte. In March 1799 De Dolomieu became ill and was forced to leave Alexandria, Egypt for France. His ship, caught in a storm, sought refuge at the port of Taranto, Italy where De Dolomieu was made a prisoner of war. General Thomas-Alexandre Dumas, the father of Alexandre Dumas, the author, was also captured and held. The city was part of the Kingdom of the Two Sicilies, which was then at war with France. De Dolomieu had previously made a powerful enemy of the Grand Master of the Maltese Order when he helped negotiate the surrender of the island of Malta to Napoleon. The Grand Master denounced De Dolomieu and he was transferred to Messina, Sicily and imprisoned under horrible conditions, in solitary confinement, for the next 21 months.The imprisonment of a world-famous scientist, under such conditions, was abhorrent to the intellectual community of Europe. Even the scientific community of England (who was at war with France) protested the confinement. Talleyrand, the French foreign minister, attempted to negotiate Dolomieus release through the Pope. Napoleon, who was First Consul of France at the time, felt that asking for such an intervention by the Pope would be dishonorable. The future Emperor's approach to the problem was more direct. In the spring of 1800 Napoleon led the French army into Italy, delivering a crushing blow to the Austrians and their Italian allies on 14 June at the Battle of Marengo. All of Italy then came within Napoleon's sphere. One of the terms dictated by Napoleon in the peace treaty of Florence (March 1801) was the immediate release of De Dolomieu.Upon his liberation De Dolomieu resumed his scientific studies and field excursions. But his health, broken by the long imprisonment in Sicily, gave way during a trip to the Alps. Déodat de Dolomieu died on 28 November 1801 at the home of his sister at Châteauneuf.Dr. George F. Kunz wrote about his contributions to mineralogy.".
- Déodat_Gratet_de_Dolomieu alias "Gratet de Dolomieu, Déodat Guy Sylvain Tancrède".
- Déodat_Gratet_de_Dolomieu birthDate "1750-06-23".
- Déodat_Gratet_de_Dolomieu birthPlace Dolomieu,_Isère.
- Déodat_Gratet_de_Dolomieu birthPlace La_Tour-du-Pin.
- Déodat_Gratet_de_Dolomieu birthYear "1750".
- Déodat_Gratet_de_Dolomieu deathDate "1801-11-28".
- Déodat_Gratet_de_Dolomieu deathPlace Chateuneuf.
- Déodat_Gratet_de_Dolomieu deathPlace Châteauneuf,_Saône-et-Loire.
- Déodat_Gratet_de_Dolomieu deathYear "1801".
- Déodat_Gratet_de_Dolomieu field Geology.
- Déodat_Gratet_de_Dolomieu nationality France.
- Déodat_Gratet_de_Dolomieu thumbnail Deodat_de_Dolomieu2.jpg?width=300.
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- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Alexandre_Dumas.
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- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Alps.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Battle_of_Marengo.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Belsazar_Hacquet.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Category:1750_births.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Category:1801_deaths.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Category:French_geologists.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Category:Knights_of_Malta.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Category:People_from_Isère.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Charles_Maurice_de_Talleyrand-Périgord.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Chateuneuf.
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- Déodat_Gratet_de_Dolomieu wikiPageWikiLink County_of_Tyrol.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Dauphiné.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Dolomieu,_Isère.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Dolomite.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Dolomites.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Duc_de_La_Rochefoucauld.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Encyclopédie_Méthodique.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink First_Consul.
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- Déodat_Gratet_de_Dolomieu wikiPageWikiLink French_Consulate.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink French_Revolution.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink French_campaign_in_Egypt_and_Syria.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink French_invasion_of_Egypt_(1798).
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Geologist.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Geology.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink George_F._Kunz.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink George_Frederick_Kunz.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Guillotine.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Institut_dxc3x89gypte.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink James_Hutton.
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- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Knights_Hospitaller.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Knights_of_Saint_John.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink La_Tour-du-Pin.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Limestone.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Ljubljana.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Messina.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Mineralogy.
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- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Musxc3xa9um_National_dHistoire_Naturelle.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Napoleon.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink National_Museum_of_Natural_History_(France).
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Nicolas-Théodore_de_Saussure.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Piton_de_la_Fournaise.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Pope_Clement_XIII.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Sigmund_Zois.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Talleyrand.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Taranto.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Thomas-Alexandre_Dumas.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Uniformitarianism.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Uniformitarianism_(science).
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink Volcanology.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink École_Centrale_Paris.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLink École_Nationale_Supérieure_des_Mines_de_Paris.
- Déodat_Gratet_de_Dolomieu wikiPageWikiLinkText "Dolomieu".
- Déodat_Gratet_de_Dolomieu wikiPageWikiLinkText "Dolomieu, Dieudonne de Gratet de".
- Déodat_Gratet_de_Dolomieu wikiPageWikiLinkText "Déodat Gratet de Dolomieu".
- Déodat_Gratet_de_Dolomieu wikiPageWikiLinkText "Gratet de Dolomieu".
- Déodat_Gratet_de_Dolomieu alternativeNames "Gratet de Dolomieu, Déodat Guy Sylvain Tancrède".
- Déodat_Gratet_de_Dolomieu birthDate "1750-06-23".
- Déodat_Gratet_de_Dolomieu birthPlace Dolomieu,_Isère.
- Déodat_Gratet_de_Dolomieu caption "Déodat Gratet de Dolomieu".
- Déodat_Gratet_de_Dolomieu dateOfBirth "1750-06-23".
- Déodat_Gratet_de_Dolomieu dateOfDeath "1801-11-28".
- Déodat_Gratet_de_Dolomieu deathDate "1801-11-28".
- Déodat_Gratet_de_Dolomieu deathPlace Châteauneuf,_Saône-et-Loire.
- Déodat_Gratet_de_Dolomieu field Geology.
- Déodat_Gratet_de_Dolomieu hasPhotoCollection Déodat_Gratet_de_Dolomieu.
- Déodat_Gratet_de_Dolomieu imageSize "220".
- Déodat_Gratet_de_Dolomieu name "Déodat Gratet de Dolomieu".
- Déodat_Gratet_de_Dolomieu name "Gratet de Dolomieu, Déodat".
- Déodat_Gratet_de_Dolomieu nationality France.
- Déodat_Gratet_de_Dolomieu placeOfBirth La_Tour-du-Pin.
- Déodat_Gratet_de_Dolomieu placeOfDeath Chateuneuf.
- Déodat_Gratet_de_Dolomieu shortDescription "French geologist".
- Déodat_Gratet_de_Dolomieu wikiPageUsesTemplate Template:Authority_control.
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