Henri Ungemach

Henri Léon Ungemach (19 September 1879 – 11 June 1936) was an Alsatian mineralogist who made a collection of minerals, nearly 3000 of which are now held at the Muséum National d’Histoire Naturelle in Paris.

He graduated in 1904 and went to the Imperial University of Strasbourg where he received a doctorate in 1907 with a thesis ("Die Erzlagerstätten des Weilertales") on the minerals of the Val de Villé.

Chronic bronchitis made him return to Strasbourg in 1932 where he began to catalogue the mineral collections in the university.

He drew the crystal structures with great care and calculated Miller indices for the faces.

A number of species were described from his collections and named after him including:[3] Ungemach married Éva Denise Andrée, daughter of the French art historian Léonce Bénédite in Paris in 1908.