Haüy, René Just, Abbé

Haüy, René Just, Abbé rənā´ zhüst äbā´ äüē´ [key], 1743–1822, French mineralogist, an authority on crystals. He discovered the geometric law of crystallization and wrote many books and papers on crystallography. He was professor at the Museum of Natural History, Paris, from 1802.

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