7, 1795, formally establishing the metric system in France. On July 12, 1794, a public decree reorganized the École des Mines (School of Mines) in Paris and specified the establishment of a Cabinet of Mineralogy, a collection of all Earth materials. In October 1794, René Just Haüy was appointed the first curator of the Cabinet of Mineralogy, later known as the Musée de Minéralogie. He may therefore be considered a founder of the Musée de Minéralogie. On November 9, 1794, Haüy also became a professor of physics at the École normale supérieure. In 1802, Haüy became a professor of mineralogy at the Muséum national d'Histoire naturelle (National Museum of Natural History). Haüy's work was appreciated by Napoleon, who made Haüy an Honorary Canon of the Eglise Métropolitain de Paris (Notre Dame) on April 5, 1802. On November 28, 1803, Haüy became one of the first recipients of the Order of the Légion d'Honneur. Napoleon encouraged Haüy to write Traité élémentaire de physique (1803), and is reported to have read it during his incarceration on Elba in 1814. During his brief return to power in 1815, Napoleon promoted Haüy to officer of the Légion d'Honneur. After 1814 Haüy was deprived of his appointments by the Restoration government. He spent his final days in poverty, dying in Paris on June 1, 1822 even if "June 3" is systematically reported. The confusion in Haüy's death date (June 1 instead of June 3) is an 1823 error by Cuvier, rectified in 1944 by A. Lacroix but still often misreported. Recognition In 1817, René-Just Haüy was elected an honorary member of the New York Academy of Sciences. In 1821, Haüy was elected a foreign member of the Royal Swedish Academy of Sciences. His name is the thirteenth inscribed on the south-east side of the Eiffel Tower. The mineral Haüyne was named for Haüy in 1807 by Thomas-Christophe Bruun-Neergaard. It occurs in silica-deficient igneous rocks in a wide variety of locations. The International Mineralogical Association declared 2022 the International Year of Mineralogy which will take place under the patronage of the International Year of Basic Science for Sustainable Development and has been approved by UNESCO in regard of the 200 anniversary of the death of René-Just Haüy, at the Hôtel de Magny of the Jardin des plantes (MNHN), in Paris (France). There, several events were scheduled to honor René-Just Haüy: the exhibition "Pierres précieuses" (Gems) at