About Ours-Pierre-Armand Petit-Dufrénoy
Ours-Pierre-Armand Petit-Dufrénoy, French geologist and mineralogist (died 1857) In 1845 the newly discovered mineral dufrenoysite was named after him. Ours-Pierre-Armand Petit-Dufrénoy (5 September 1792 – 20 March 1857) was a French geologist and mineralogist.
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