Alfred Des Cloizeaux

Affiliations: 
1857-1875 École normale supérieure Paris, Paris, Île-de-France, France 
 1876-1893 Muséum national d'histoire naturelle (Paris) 
Area:
Crystal system classification, polarization, optical mineralogy
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"Alfred Des Cloizeaux"
Bio:

Alfred Louis Olivier Legrand Des Cloizeaux
(17 October 1817 – 6 May 1897)
https://en.wikipedia.org/wiki/Alfred_Des_Cloizeaux

Parents

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Alexandre Brongniart research assistant 1839 College de France (Evolution Tree)
 (Dates uncertain. Mentorship is attested, likely from attending Brogniard lectures at the Muséum in the late 1830s, while enrolled as a student at the Collège de France)
Jean-Baptiste Biot research assistant 1845-1846 College de France (Physics Tree)
 (He accompanied Biot to Iceland. Two Iceland trips are documented, in 1845 and 1846.)