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Named in honor of Professor Pierre Perroud of Voltaire College in Geneva, Switzerland who worked extensively on Cap Garonne mine minerals where Perroudite gets its type locality.  At Cap Garonne, Perroudite occurs as an alteration mineral of tennantite in sandstone and conglomerate, and occurs elsewhere in quartz veins that bear oxidized galena. Perroudite can be found additionally in Germany, and Australia, among a couple other localities.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/perroudite.pdf


Named after Dr. Peter Tarasoff, an amateur mineralogist from Quebec, Canada. Petarasite occurs at its type locality at Mont Saint-Hilaire in “a biotite-microcline xenolith and in pegmatitic veins in a nepheline syenite in an intrusive alkalic gabbro-syenite complex.” Other localities may include Norway, Russia, and the USA. 

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/petarasite.pdf

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